JP7346059B2 - cap - Google Patents

Description

The present invention relates to a cap that is attached to the mouth of a container, and relates to a cap that has an inner plug that transitions to the top lid and has improved sealing performance.

Conventionally, in hinged caps that include a cap body that is attached to the mouth of a container and a top lid that is connected to the cap body via a hinge, in order to ensure the sealing performance of the container, a part of the cap body that is scheduled to open is A partition wall was provided with a removed portion in which a pull ring or the like was formed.
However, in order to open the removal part, it is necessary to open the top lid and then pull a pull ring to remove the removal part, which is troublesome and poses a problem that users with weak strength may find it difficult to remove the cap. there were.

Therefore, in order to eliminate the removal part that is pulled and removed by a pull ring, the cap body has an annular side wall that is integrally molded with the cap body through a breakable weakened part and has an outer diameter that can be brought into close contact with the inner surface of the pouring nozzle. It is known to provide a hinge cap using an inner stopper that engages with a protrusion provided on the top lid (for example, see Patent Document 1).

JP 2019-11131 Publication

However, in Patent Document 1, since the container is sealed with an inner stopper that has an annular side wall that is in close contact with the inner surface of the dispensing nozzle, the consumer may not be able to use the liquid before using it due to the shock caused by dropping the container. However, there were problems in that the liquid inside the container was not sufficiently sealed, such as adhesion of the liquid inside the container to the inner surface of the top lid or leakage of the liquid.
In addition, if the inner stopper and the inner surface of the pouring nozzle are made to tightly adhere to each other, it will be necessary to forcefully pull up the top cover when opening the lid, reducing the risk of the top cover becoming disengaged from the inner stopper. have.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems and provides a cap with an inner plug that has improved sealing performance and is easy to open even when the upper lid and the inner plug are firmly engaged. do.

In order to solve the above-mentioned problems, the present invention provides a cap that is composed of a cap body that is attached to the mouth of a container, and an upper lid that closes the opening of the cap body. It includes a mounting part attached to the mouth part, a base wall extending inward from the mounting part, a spout tube erected from the base wall, and an inner stopper connected to the spout tube, The inner stopper has a bottom wall that is connected to the inner periphery of the lower part of the pouring cylinder via a weakened part and has a seal protrusion that projects outward from the lower part, and a first engaging part that stands upright on the bottom wall. The upper lid includes a top wall, a side peripheral wall hanging from the periphery of the top wall, an engagement tube hanging from the lower surface of the top wall, and a top cover hanging from the outside of the engagement tube. and a sealing cylinder that comes into contact with the inner periphery of the spouting cylinder, a second engaging part is formed on the outer periphery of the engaging cylinder or the inner periphery of the sealing cylinder, and the inner stopper is pushed up when the lid is closed. The weakened part is broken, and the first engaging part of the detached inner stopper and the second engaging part of the upper lid are engaged, forming a first sealing part in which the outer periphery of the seal cylinder abuts the inner periphery of the spouting cylinder, A configuration is adopted in which the seal protrusion forms a second seal portion that contacts or is close to the inner periphery of the pouring cylinder.

A specific embodiment of the cap is characterized in that the first engaging part is provided on the upper inner peripheral side of the engaging wall, and the second engaging part is provided on the lower outer peripheral side of the engaging tube. The inner stopper is characterized in that it has a boss portion projecting upward in the center thereof, and the boss portion comes into contact with the inner periphery of the engagement cylinder when the inner stopper is engaged with the top cover in the closed state. In addition, the inner stopper has a concave portion formed on the lower surface of the bottom wall, and the concave portion has an inclination that spreads inward.

A further specific embodiment of the cap is characterized in that a stepped portion is provided at the lower part of the dispensing tube so as to project below the engaged inner stopper , and the upper lid is configured such that the upper lid is attached via a hinge. The present invention adopts a configuration characterized in that the cap body is connected to the cap body.

In the cap of the present invention, the inner stopper is engaged with the seal cylinder and the engagement cylinder so as to be sandwiched between the seal cylinder and the dispensing cylinder, and the seal cylinder and the dispensing cylinder hanging down from the top lid form a first sealing part, and the bottom of the inner stopper is The seal protrusion protruding from the lower part of the wall forms a second seal part that contacts or is close to the inner surface of the dispensing cylinder, so even if the lid is dropped while the lid is closed, the liquid will not be damaged. This can be suppressed by two seal parts, and the sealing performance can be improved by the double seal.
In addition, unlike the first seal part that is formed by the seal tube of the top lid, the second seal part is an inner stopper that is separate from the top lid, so when opening the lid, after peeling off the first seal part, Since the second seal portion starts to be peeled off after a delay, the lid can be opened easily.

FIG. 3 is a diagram showing a state in which the cap of the first embodiment of the present invention is attached to a container in a closed state with an inner stopper engaged; FIG. It is an enlarged view of the part. It is a figure which shows the open state of the cap of 1st Example of this invention immediately after manufacture, (a) is a top view, (b) is a side sectional view. It is a figure which shows the cap of 1st Example of this invention in a closed state where an inner stopper is not engaged, (a) is a side sectional view, (b) is a bottom view. In the cap of the first embodiment of the present invention, it is a diagram showing a modification of the engagement between the inner plug and the upper lid, (a) is a side sectional view, and (b) is an enlarged view of the main part of (a). . It is a figure which shows the cap of 2nd Example of this invention in the closed state where an inner stopper is not engaged, (a) is a side sectional view, (b) is the principal part enlarged view of (a) . It is a figure which shows the closed state of the cap of 2nd Example of this invention with the inner stopper engaged, (a) is a side sectional view, (b) is an important part enlarged view of (a). It is a figure which shows the seal protrusion of various shapes about the inner stopper of the cap of this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cap of the present invention as a hinge cap will be described with reference to the drawings.

In FIG. 1, A is a container, B is a cap body attached to the container A, C is a hinge, and D is an upper lid attached to the cap body B via the hinge C so that it can be opened and closed.
The container A has an opening 1 at the top, and a fitting protrusion 2 is provided on the outer peripheral surface of the opening 1.

As shown in FIGS. 1 to 6, the cap body B includes a mounting part 3 to be mounted on the mouth part 1 of the container A, a base wall 4 extending inward from the upper end of the inner edge of the mounting part 3, and a base. The pouring cylinder 5 is provided upright on the wall 4.
Further, inside the spouting cylinder 5, an inner stopper E is provided as a scheduled opening portion and is removable via a weakened portion 6.

In this embodiment, the pouring cylinder 5 is provided from the center to the side opposite to the hinge C, and the side opposite to the hinge C (pour side) is higher than the hinge C side in order to make it easier to pour the contents. The upper part thereof expands into a trumpet shape to form a lip portion 5a.

The mounting part 3 includes an annular lid engaging part 9 that is provided with a locking protrusion 8 on the periphery and engages with the upper lid D, an inner cylinder 10 that is vertically provided from the inner peripheral side of the lid engaging part 9, and a lid. An outer peripheral wall portion 11 is provided vertically from the outer peripheral side of the engaging portion 9.
The outer circumferential wall portion 11 is provided with an engaging protrusion 12 for engaging with the container A at the lower inner circumference.

As shown in FIG. 2, in the vicinity of either the left or right side of the hinge C of the outer circumferential wall portion 11, an outer circumferential cut portion 13 having a substantially V-shape in plan view is formed on the outer circumferential surface from above, leaving a thin bottom wall at the lower end. It's cut in.
At a position corresponding to the outer circumference cut 13 of the engagement protrusion 12, an inner circumference cut (not shown) is vertically carved, and a longitudinal tear line is formed.

On the hinge C side of the outer circumferential notch 13, a slit groove 15 is recessed from above so as to extend in the circumferential direction starting from a position across the upper thin part on the inner circumferential side of the end surface 13a. , starting from the end surface 13a and extending over approximately 345°.
Further, with the starting point of the slit groove 15 adjacent to the longitudinal tear line as the tearing start point, a thin connecting portion connecting the outer peripheral wall portion 11 and the lid engaging portion 9 is provided on the inner peripheral side of the bottom surface 16 of the slit groove 15. 17 is provided, and the circumferential tear line is formed so as to extend in an arc shape, and the tear line can be torn to an unbreakable connection portion at the end point.

As shown in FIGS. 2 and 3, the inner stopper E includes a bottom wall 20 that connects to the lower inner periphery of the spout cylinder 5 via the weakened portion 6, and an engagement wall 21 that stands up from the bottom wall 20. It consists of a boss portion 22 that projects upward at the center of the inner stopper E.
The engagement wall 21 is erected so as to enter the inside of a seal cylinder 33 that is suspended from the upper lid D, which will be described later.The engagement wall 21 is also installed vertically from the upper lid D, which will be described later, on the upper inner periphery of the engagement wall 21. The second engaging portion 34 of the engaging tube 32 is provided with a first engaging portion 23 that engages when the inner stopper E is removed.
Further, a recess 24 is provided in the center of the lower surface of the bottom wall 20, and in this embodiment, the recess 24 widens inward in order to prevent the weakened portion 6 from breaking during molding. It has an inclined structure.
In this embodiment, the recess 24 is provided with an inclination in order to prevent the weakened portion 6 from breaking during molding, but the recess 24 may be provided with an engaging portion.
A seal protrusion 25 is provided at the lower end of the outer edge of the bottom wall 20, and when the inner stopper E is detached and transferred to the upper cover D, as shown in FIG. A second seal portion b is formed with the inner periphery of the projecting cylinder 5.
In this embodiment, the seal protrusion 25 forms a protrusion having a curved shape on the outer surface portion 25a so as to contact or be close to the inner periphery of the spouting cylinder 5.
In this embodiment, the seal protrusion 25 is provided at the lower end of the outer edge of the bottom wall 20, but the position is not limited as long as it protrudes outward from the lower part of the bottom wall 20.
Further, it is desirable that the sealing protrusion 25 protrudes outward from the outer surface of the inner plug E where the weakened portion 6 is provided.

As shown in FIGS. 2 and 3, the top lid D is rotatably attached to the upper end of the outer periphery of the outer periphery wall portion 11 of the cap body B via a hinge C, and is attached to the top wall 30 and the top wall 30. It is provided with a side peripheral wall 31 that is vertically provided from the peripheral edge of the cylinder.
The top wall 30 has an engagement cylinder 32 and a seal cylinder 33 hanging from the bottom surface thereof on the outside of the engagement cylinder 32 .
The seal cylinder 33 is provided so that when the lid is closed, the outer periphery comes into contact with the inner periphery of the spout cylinder 5 of the cap body B to seal the seal cylinder.
Further, the engagement cylinder 32 and the seal cylinder 33 are provided on the side opposite to the hinge C, similarly to the pouring cylinder 5 of the cap body B.

In this embodiment, the second engaging part 34 is provided at the lower part of the outer circumference of the engaging cylinder 32, and the inner stopper E is pushed up from the closed state of FIG. 3(a) to the weakened part as shown in FIG. 6 is broken and the inner stopper E is detached, the inner stopper E is engaged with the first engaging portion 23 on the upper inner circumference of the engaging wall 21, and the inner stopper E is moved to the upper lid D.
In this embodiment, as shown in FIG. 1, the first engaging portion 23 is provided at the upper part of the inner peripheral side of the engaging wall 21 and engages with the engaging tube 32. As shown in FIG. 4, the first engaging portion 123 may be provided at the upper portion of the outer circumferential side of the engaging wall 21 and may be engaged with the second engaging portion 134 provided at the lower portion of the inner circumferential side of the seal cylinder 133. do not have.
In this case, the engagement wall 21 is erected inward from the bottom wall 20 in this embodiment in order to enter the inside of the seal cylinder 133.

As shown in FIG. 1, when the inner stopper E is pushed up and moved to the upper lid D, the outer circumference of the seal cylinder 33 comes into close contact with the inner circumference of the spout cylinder 5, forming a strong first seal part a, Further, the seal protrusion 25 of the inner stopper E contacts or comes close to the inner periphery of the spout cylinder 5 to form a relatively weak second seal part b.
Note that even if the seal protrusion 25 is close to the inner periphery of the spout tube 5, when an impact from the liquid content occurs due to a fall, etc., the seal protrusion 25 will be pushed up and the inner circumference of the spout tube 5 will be pushed up. Since it comes into contact with the contact, it can play the same role as a contact.

The lower end of the side peripheral wall 31 has a locking convex portion 37 vertically provided on the inner peripheral side, which engages with the inner peripheral side of the lid engaging portion 9 of the cap body B, and a locking convex portion 37 that engages with the inner peripheral side of the lid engaging portion 9 of the cap body B, and a locking convex portion 37 that engages with the inner peripheral side of the lid engaging portion 9 of the cap main body B. An engaging recess 38 that engages with the stopper ridge 8 to maintain the closed state is provided around the lid.
An arcuate handle portion 39 extends in the circumferential direction on the outer periphery of the side peripheral wall 31 on the opposite side to the hinge C, and a finger rest portion 40 is provided on the lower surface of the center of the handle portion 39.

Although not shown, the hinge cap of this embodiment is provided with a shrink label, a sealing member, etc. between the cap body B and the top lid D in order to prevent unauthorized opening before use.

Next, the usage mode and effects of this embodiment will be explained.
The hinge cap of this embodiment is manufactured in one piece by injection molding using a mold.
Note that since the recess 24 on the lower surface of the bottom wall 20 of the inner plug E is sloped inward, even if the first engaging portion 23 of the inner plug E is undercut during molding, , it is possible to prevent the inner stopper E from being pulled upward and to prevent the weakened portion 6 from breaking.

The hinge cap of this example manufactured by integral molding is obtained in an open state as shown in FIG. While contacting the pouring tube 5 of the main body B, the lid engaging part 9 of the cap main body B and the engaging recess 38 of the upper lid D fit together, resulting in the closed lid state shown in FIG. 3.
After the hinge cap is closed, the bottom wall 20 of the inner stopper E is pushed up from below the cap body B using a pressing jig or the like, thereby breaking the weakened part 6 and releasing the inner stopper E. It moves upward inside the projecting tube 5, the engagement wall 21 enters inside the seal tube 33 of the upper lid D, and the first engagement part 23 of the engagement wall 21 engages the second engagement of the engagement tube 32 of the upper lid D. The inner stopper E easily crosses over and engages with the inner stopper E, and the boss part 22 of the inner stopper E enters into and comes into contact with the engagement tube 32, completing the transition of the inner stopper E to the upper lid D.

At this time, since the outer circumference of the engagement wall 21 of the inner stopper E comes into contact with the inner circumference of the seal tube 33, the outer circumference of the seal tube 33 firmly abuts the inner circumference of the spout tube 5 and closes the first seal part a. At the same time, the seal protrusion 25 of the inner stopper E comes into contact with or comes close to the inner periphery of the spout cylinder 5 to form a second seal part b.
Next, the hinge cap with the inner stopper E transferred to the upper lid D is plugged and attached to the container A filled with the liquid content.

The hinge cap of this embodiment has a first seal part a that is strongly sealed and a second seal part b that is relatively weakly sealed, and is double-sealed. Even if an impact occurs, the impact is suppressed by the second seal part b, and even if the liquid content enters the second seal part b, there is a space between it and the first seal part a, so that the liquid content is suppressed. This prevents the liquid content from leaking from the first seal portion a, and improves sealing performance.
In addition, even if a pressing force is applied to the upper lid D from the side due to an impact such as a drop, the second seal part b will not engage the inner plug E because the inner plug E is configured separately from the upper lid D. Since the mating wall 21 and the engagement cylinder 32 of the upper lid D are engaged so as to be movable in the vertical direction, the sealing performance of the second seal portion b is not affected.
Further, in this embodiment, the second seal part b is sealed relatively weakly compared to the first seal part a, but the second seal part b may be made equal to or more than the first seal part a, and the weakened part Since the inner stopper E, which has been transferred to the upper lid D by being broken at 6, becomes a separate body from the upper lid D, it is possible to increase the strength of the sealing performance of the second seal portion b.

When using the hinge cap of this embodiment, when the finger hook 40 of the top lid D is hooked and the handle 39 is lifted, the top lid D with the inner stopper E set therein is lifted and the lid opens. It becomes possible to pour out the liquid inside A.
At that time, even if the seal protrusion 25 of the inner plug E of the second seal part b is in contact with the inside of the spout cylinder 5, after the first seal part a is peeled off by the seal cylinder 33 of the upper lid D, Since the second seal part b, which is a little weak, is peeled off by the inner stopper E after a little delay, the lid can be opened easily without becoming difficult to open.
In addition, when the first seal part a is tightly attached to the seal cylinder 33 of the upper lid D, even if the upper lid D is pulled up strongly, the inner plug E is only covered by the second seal part b, which is relatively weak. The engagement between the inner plug E and the upper lid D will not come off.

After using the content liquid, by closing the top lid D onto the cap body B again, the first seal part a is formed by the seal cylinder 33 of the top lid D and the spout cylinder 5, and at the same time, the seal protrusion of the inner stopper E is closed. 25 is formed, the inside of the hinge cap can be sealed again, and the upper lid D can be repeatedly opened and closed for use.

The hinge cap of this embodiment can be separated from the container A and disposed of after all the liquid inside the container A has been used.
In that case, when the hinge cap is opened and the top cover D is grasped with fingers and pulled outward, the part of the outer peripheral wall 11 connected to the hinge C is pulled and deformed, and the longitudinal tear line is formed. When the upper lid D is further pulled after being broken, the thin connecting portion 17 forming the circumferential tear line begins to break. As the thin connection portion 17 continues to break, the top lid D separates from the cap body B.
When the thin connecting portion 17 is completely cut at the end of the slit groove 15 and the upper lid D is further pulled, the cap body B and the container A are unfitted, and the hinge cap and the container A can be disposed of separately. can.

Next, a second embodiment will be described in which the configuration of the pouring tube 5 and the shape of the seal protrusion 25 are changed.
Hereinafter, the same parts as in the first embodiment are given the same reference numerals, and the explanation will focus on the differences.

As shown in FIGS. 5 and 6, in this embodiment, a stepped portion 7 is provided at the bottom of the spout tube 5 of the cap body B to protrude inward.
Although the stepped portion 7 is provided over an arc in this embodiment, it may be provided intermittently.
Further, in this embodiment, the seal protrusion 125 of the inner stopper E is formed with a downwardly inclined protrusion on the outer surface 125a so as to contact or be close to the inner periphery of the spout tube 5. There is.

Next, the embodiment and effects of this example will be described.
In this embodiment, since the stepped portion 7 is provided at the lower part of the pouring tube 5, it is possible to prevent the inner stopper E from falling.
Also, from the closed state in which the inner stopper E in Fig. 5 is not engaged, by pushing the inner stopper E with the pressing jig in the same way as in the first embodiment, the state in which the inner stopper E in Fig. 6 is engaged is changed. In addition to the strong first seal part a with the spout tube 5 by the seal tube 33, the seal protrusion 125 comes into contact with or comes close to the inner periphery of the spout tube 5. A weak second seal portion b is formed.
The other configurations and effects are the same as in the first embodiment.

In addition to the shape of the seal protrusion 25 in the first embodiment and the shape of the seal protrusion 125 in the second embodiment, if the seal protrusion is in contact with or close to the pouring tube, the shape shown in FIG. As shown, the shape of the seal protrusion 25 at the outer surface portion 25a is (a) an outwardly downwardly inclined plate shape, (b) an outwardly bent dogleg shape, (c) a curved plate shape, and (d) a triangular shape. Various modifications are possible, such as a protrusion having a .

Furthermore, in the above embodiments, a hinge cap has been described as a specific example of the cap, but a screw cap including a cap body and an upper lid may also be used.
Further, the fitting between the cap body and the mouth of the container is not limited to capping, but may be screw fitting or the like.

The cap of the present invention has improved airtightness due to the double sealing of the first seal part to the spout pipe by the seal cylinder of the top lid and the second seal part to the spout pipe by the seal protrusion of the inner stopper. be able to.
Furthermore, the first seal part is strongly sealed by the seal tube, and the second seal part is relatively weakly sealed by the inner stopper, so that the inner stopper and the top cover can be easily opened without coming off. can.
Since the cap of the present invention has excellent sealing properties, it can be applied to a wide range of applications as caps for containers containing liquids that require airtightness.

A Container B Cap body C Hinge D Top lid E Inner stopper a First seal part b Second seal part 1 Mouth part 2 Fitting protrusion 3 Mounting part 4 Base wall 5 Dispensing cylinder 5a Lip part 6 Weakened part 7 Step part 8 Locking protrusion 9 Lid engaging part 10 Inner cylinder 11 Outer peripheral wall part 12 Engaging protrusion 13 Outer peripheral notch part 13a End face 15 Slit groove 16 Bottom face 17 Thin connecting part 20 Bottom wall 21 Engaging wall 22 Boss part 23, 123 1 engaging portion 24 recesses 25, 125 seal protrusions 25a, 125a outer surface portion 30 top wall 31 side circumferential wall 32 engaging tubes 33, 133 seal tubes 34, 134 second engaging portion 37 locking convex portion 38 engaging recess 39 Handle part 40 Finger rest part

Claims (6)

A cap consisting of a cap body that is attached to the mouth of a container, and an upper lid that closes the opening of the cap body,
The cap body includes a mounting part that is attached to the mouth of the container, a base wall that extends inward from the mounting part, a spout tube that stands up from the base wall, and a spout tube that is connected to the spout tube. Equipped with an inner stopper,
The inner stopper has a bottom wall that is connected to the inner periphery of the lower part of the pouring cylinder via a weakened part and has a seal protrusion that projects outward from the lower part, and a first engaging part that stands upright on the bottom wall. an engaging wall;
The upper lid includes a top wall, a side wall extending vertically from the periphery of the top wall, an engaging tube extending vertically from the lower surface of the top wall, and an engaging tube extending vertically from the outside of the engaging tube, and extending from the inner periphery of the pouring tube. and a seal cylinder that comes into contact with the
forming a second engagement portion on the outer circumference side of the engagement tube or on the inner circumference side of the seal tube;
With the lid closed, the inner stopper is pushed up, the weakened part is broken, and the first engaging part of the detached inner stopper and the second engaging part of the top lid are engaged,
A cap characterized in that a first seal part is formed in which the outer periphery of the seal cylinder contacts the inner periphery of the spouting cylinder, and a second seal part is formed in which the seal protrusion contacts or approaches the inner periphery of the spouting cylinder. The first engagement portion is provided on the upper inner peripheral side of the engagement wall,
2. The cap according to claim 1, wherein the second engaging portion is provided on the lower outer peripheral side of the engaging tube. The inner stopper has a boss section in the center that projects upward,
3. The cap according to claim 1, wherein the boss portion comes into contact with the inner periphery of the engagement tube when the boss portion engages with the upper cover in the closed state. The inner plug forms a recess on the lower surface of the bottom wall,
4. The cap according to claim 1, wherein the recess has an inwardly expanding slope. The cap according to any one of claims 1 to 4, characterized in that a step is provided at the lower part of the spouting tube so as to project below the engaged inner stopper . The cap according to any one of claims 1 to 5, wherein the upper lid is connected to the cap body via a hinge.

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