JP2021107236A - Hinge cap - Google Patents

Abstract

To provide a hinge cap secured for sealability and easily opened.SOLUTION: This hinge cap comprises: a cap body that is mounted to the mouth of a container; and an upper lid connected to the cap body via a hinge. The cap body includes a mount fixed to the mouth of the container, a poring-out cylinder erected on the inside of the mount, a partition wall connected to the inner periphery of the poring-out cylinder, and a stopper defined by a breakable weakened part in the partition wall as a part scheduled to be opened. The stopper includes a bottom wall connected to the partition wall via the hinge, and a raised wall erected on the upper surface of the bottom wall and raised by the upper during opening. The upper lid includes a top wall, a side peripheral wall drooped from the peripheral part of the top wall, and a seal cylinder drooped form the lower surface of the top wall to seal the poring-out cylinder. The bottom wall of the stopper has a blade provided in a lower outer periphery close to the weakened part so as to be deformable extending outward from the lower side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hinge cap used by being attached to a container, and particularly to a hinge cap having an opening portion that breaks a weakened portion and shifts to the upper lid side at the first opening of the lid.

Conventionally, in a hinge cap consisting of a cap body attached to a container and an upper lid connected to the cap body via a hinge, a pull ring or the like is provided at the planned opening portion of the partition wall of the cap body in order to ensure the tightness of the container. Was provided with a removing portion in which the above was formed.
However, in order to open the removal part, after opening the upper lid, it is necessary to pull up a pull ring or the like to open the removal part, which is troublesome and difficult for a weak user. There was a problem.

Therefore, if the removal part as the planned opening part is eliminated, there will be a problem in sealing performance such as the content liquid easily entering the hinge cap. A hinge cap is conventionally known in which a joint wall is engaged with a hanging piece hung from an upper lid, and the upper lid is opened and the engaging wall is pulled up together to break a weakened portion and open the cap (for example). , Patent Document 1).

Further, in the hinge cap described in Patent Document 1, even if the upper lid is closed after opening, a gap is formed in the broken portion and the pouring opening cannot be sufficiently closed, so that the content liquid collects on the transferred portion. There is a problem that it may become dirty when reused, and a hem is provided at the lower end of the peripheral wall main body of the seal plate portion to be the planned opening portion, and the outer peripheral portion and the hem portion of the thin-walled portion are opened. It is also known that the airtightness is improved by overlapping the hem portion on the outer peripheral portion of the thin-walled portion and bringing it into close contact with the lid closed after the plug (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 10-338253 Japanese Patent No. 6166948

However, in the hinge caps described in Patent Document 1 and Patent Document 2, when the cap is opened, the upper lid is lifted to pull up the entire circumference of the engaging wall erected in the planned opening portion, so that the weakened portion is broken. There was a problem that it took a lot of power to start.
Further, in the hinge cap described in Patent Document 2, when the upper lid is closed after opening, the hem portion is overlapped on the outer peripheral portion of the thin-walled portion and brought into close contact with the hinge cap. There was a problem that the airtightness was not sufficient.

An object of the present invention is to solve the above problems, the airtightness is ensured before the hinge cap is opened, and after the hinge cap is opened, the gap between the broken weakened portions is completely closed to improve the airtightness. However, the purpose is to prevent stains during reuse.

In order to solve the above problems, the present invention is a hinge cap including a cap body attached to the mouth of a container and an upper lid connected to the cap body via a hinge as a hinge cap. The main body consists of a mounting part that is mounted on the mouth of the container, a dispensing cylinder that stands inside the mounting part, a partition wall that is connected to the inner circumference of the dispensing cylinder, and a weakened part that can be broken into the partition wall. It is provided with an opening part that is defined by the above and will be an opening part, and the opening part is erected on the bottom wall connected to the partition wall via the weakening part and the upper surface of the bottom wall, and is pulled up to the upper lid at the time of opening. The top lid is provided with a top wall, a side peripheral wall suspended from the peripheral edge of the top wall, and a seal tube suspended from the lower surface of the top wall to seal the dispensing tube. The bottom wall of the opening portion adopts a configuration characterized in that a deformable wing portion extending outward from below is provided on the outer periphery of the lower portion close to the weakened portion.

As a specific embodiment of the wing portion, the wing portion is characterized in that it is curved outward, and the wing portion is characterized in that the tip portion extends beyond the position of the weakened portion. Adopt the configuration.

As a specific embodiment of the hinge cap, the bottom wall of the opening portion is provided with an inclination so that the hinge side is higher than the side opposite to the hinge, and the pull-up wall is opposite to the hinge. The structure is characterized in that a reinforcing rib is provided on the bottom wall on the side and a reinforcing rib is provided on the hinge side toward the upper surface of the bottom wall, and the upper lid is vertically hung on the inside of the seal cylinder. The pull-up wall is provided with a wall, the pull-up wall is provided with a locking protrusion on the upper surface, and the locking protrusion is engaged with the engaging wall when the lid is closed.

Since the hinge cap of the present invention has a sealable partition wall, the same degree of airtightness as opening by a pull ring is ensured, and even when the upper lid is closed after opening, the bottom wall is deformable. Depending on the portion, the vane portion bends from under the bottom wall to close the gap of the weakened portion, so that the airtightness can be ensured.
In addition, when a pull-up wall is provided on the opposite side of the hinge and a reinforcing rib is provided on the hinge side, stress is concentrated on the weakened portion on the opposite side of the hinge when the upper lid is lifted, and the cap is easily opened. be able to.

It is a side sectional view which shows the state which attached the hinge cap of an Example to a container, and closed the lid. It is a figure which shows the opening state immediately after manufacturing of the hinge cap of an Example, (a) is a top view, and (b) is a side sectional view. It is a side sectional view which shows the state which closed the hinge cap of an Example after opening. (A) is an enlarged view of a main part of FIG. 1, and (b) is an enlarged view of a main part of FIG.

It will be described with reference to the drawing which showed the embodiment which embodied the hinge cap of this invention.

In FIG. 1, A is a container, B is a cap body, C is a hinge, and D is an upper lid that is openably and closably attached to the cap body B via a hinge C.
The container A has a mouth portion 1 at the upper portion, and a fitting ridge 2 is provided on the outer peripheral surface of the mouth portion 1.

The hinge cap of this example is manufactured using linear low density polyethylene (LLDPE) as a material, and is made of petroleum-derived, plant-derived or a mixture thereof, low-density polyethylene (LDPE), and medium-density polyethylene (MDPE). It can be used.
In the case of high-density polyethylene (HDPE) and polypropylene, it becomes difficult to break the weakened portion.
As shown in FIGS. 1 and 2, the cap body B includes a mounting portion 3 mounted on the mouth portion 1 of the container A, a base wall 4 extending inward from the upper end of the inner edge of the mounting portion 3, and a base. It is provided with a pouring cylinder 5 erected on the wall 4.

The mounting portion 3 includes an annular lid engaging portion 7 having a locking ridge 6 provided on the peripheral edge and engaging with the upper lid D, an inner cylinder 8 suspended from the inner peripheral side of the lid engaging portion 7, and a lid. It is composed of an outer peripheral wall portion 9 vertically hung from the outer peripheral side of the engaging portion 7.
The outer peripheral wall portion 9 is provided with an engaging protrusion 10 for engaging with the container A at the lower part of the inner circumference.

As shown in FIG. 2, a substantially V-shaped outer peripheral cut portion 11 is formed on the outer peripheral surface in the vicinity of either the left or right side of the hinge C of the outer peripheral wall portion 9, leaving a thin bottom wall 12 at the lower end portion. It is cut from.
Although not shown, an inner peripheral notch is engraved in the vertical direction at a position corresponding to the outer peripheral notch 11 of the engaging protrusion 10, and a vertical tear line is formed.

On the hinge C side of the outer peripheral cut portion 11, a slit groove 13 is recessed from above so as to extend in the circumferential direction starting from a position separated by a thin-walled portion on the inner peripheral side of the end surface 11a. , Starting from the end face 11a, extending over about 345 °.
Further, with the starting point of the slit groove 13 adjacent to the vertical tear line as the tear start point, a thin wall connecting the outer peripheral wall portion 9 and the lid engaging portion 7 is provided on the inner peripheral side of the bottom surface 14 of the slit groove 13. The connecting portion 15 is provided, and the circumferential tear line is formed so as to extend in an arc shape, and it is possible to tear to the unbreakable connecting portion at the end point.

A partition wall 20 for sealing the mouth 1 of the container A is provided in the injection cylinder 5, and the partition wall 20 is opened by a breakable weakening portion 21 in order to open the spout during use. A portion 22 is provided.
The opening portion 22 has a bottom wall 23 connected to the partition wall 20 via a weakening portion 21, and a substantially cylindrical pull-up wall 24 is erected on the upper surface of the bottom wall 23 on the opposite side to the hinge C. There is.

As shown in FIG. 4A, the bottom wall 23 is provided with a deformable wing portion 25 extending outward from below on the lower outer periphery close to the weakened portion 21, and the tip portion of the wing portion 25 is provided. , It is provided so as to exceed the position of the weakening portion 21.
In this embodiment, the vane portion 25 is provided so as to be curved outward, and is easy to bend.
By doing so, when the upper lid D is closed after the weakened portion 21 is broken and opened, the vane portion 25 bends and opens while abutting on the upper portion of the partition wall 20 as shown in FIG. 4 (b). The gap of the weakened portion 21 portion created by the plug can be completely closed.

Further, in this embodiment, as shown in FIG. 1, the bottom wall 23 of the opening portion 22 of the cap body B is provided with an inclination so as to be higher on the hinge C side.
Further, a triangular reinforcing rib 26 is provided on the hinge C side of the pull-up wall 24 from the upper portion toward the upper surface of the bottom wall 23, and the bottom wall 23 is provided on the pull-up wall 24 on the opposite side to the hinge C. A protruding portion 24a extending to the vicinity of the weakened portion 21 of the above is formed.
By having such a structure, when the upper lid D is lifted, stress is concentrated on the weakened portion 21 on the opposite side of the hinge C, and the weakened portion 21 can be easily broken.

Further, in this embodiment, as shown in FIG. 2B, a mountain-shaped locking protrusion is formed on the upper surface of the pull-up wall 24 via a step portion 27 so as to cover the pull-up wall 24. 28 is provided.
The locking protrusion 28 has a mountain shape with a large lower portion and a smaller mountain shape toward the upper portion, and the inclination at the upper portion is gentle, and the inclination on the opposite side of the hinge C is gentler than that on the hinge C side.
The upper surface of the locking protrusion 28 is flat in this embodiment, but may be rounded.

As shown in FIGS. 1 and 2, the upper lid D is rotatably attached to the upper end of the outer peripheral wall portion 9 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 hung from the peripheral portion of the above.
On the top wall 30, a seal cylinder 33 and an engagement wall 34 are vertically provided from the lower surface on the side opposite to the hinge C inside the seal cylinder 33, and the outer circumference of the seal cylinder 33 is a pouring cylinder with a cap body B. It is provided so as to abut on the inner circumference of 5.
Further, the top wall 30 is opened with an engaging hole portion 35 communicating with the inner peripheral surface of the engaging wall 34.

As shown in FIG. 1, the engaging wall 34 has an inner peripheral surface inclined in accordance with the lower outer peripheral surface of the locking protrusion 28, and the lower surface thereof becomes a step portion 27 on the upper surface of the pulling wall 24 when the lid is closed. It is designed to come into contact or close to each other.
Further, a locking portion 36 is provided on the inner peripheral upper surface of the engaging wall 34, and the lower surface of the engaging hole portion 35 is formed.
In this embodiment, when the lid is closed, the upper portion of the locking protrusion 28 reaches the engaging hole portion 35, and as shown in FIG. 1, the locking protrusion 28 is formed by a retaining process such as melting. The upper part of the is widened so as to fill the engaging hole portion 35, and the locking protrusion 28 is engaged by the locking portion 36 on the upper surface of the engaging wall 34.

In this embodiment, the locking protrusion 28 is provided above the pulling wall 24, and the engaging hole 35 is further provided in the upper lid D, and the upper part of the locking protrusion 28 is prevented from coming off when the lid is closed. However, any method may be used to engage the pulling wall 24 and the engaging wall 34, and the engaging hole portion 35 of the upper lid D may be used. It doesn't matter if you don't have it.

The lower end of the side peripheral wall 31 is provided with an engaging recess 38 that engages with the locking ridge 6 of the lid engaging portion 7 of the cap body B on the inner peripheral side.
An arcuate handle portion 39 extends in the circumferential direction on the outer periphery of the side peripheral wall 31 opposite to the hinge C, and a finger hook portion 40 is provided on the lower surface of the central portion of the handle portion 39.

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

Next, the usage mode and the action and effect of this example will be described.
The hinge cap of this embodiment can be manufactured by integral molding by injection molding using a mold.
As shown in FIG. 2, the hinge cap of the present embodiment manufactured by integral molding is obtained in an open state, and the upper lid D is rotated via the hinge C to be closed.
At that time, the locking protrusion 28 on the upper part of the pulling wall 24 has a small upper portion and a gentle inclination on the opposite side to the hinge C, so that the locking protrusion 28 easily enters the engaging wall 34, and the upper part is formed. Upon reaching the engaging hole portion 35, the lower outer periphery of the locking protrusion 28 fits into the inner circumference of the engaging wall 34, and the lower surface of the engaging wall 34 abuts or abuts on the step portion 27 of the pulling wall 24. Close to each other.

Further, the seal cylinder 33 abuts on the pouring cylinder 5 to form a seal portion, and the lid engaging portion 7 of the cap body B and the engaging recess 38 of the upper lid D are fitted.
Further, in this embodiment, in the closed state, the upper part of the locking protrusion 28 is subjected to a retaining process by melting or the like, and the locking protrusion 28 is engaged with the engaging wall 34 and closed as shown in FIG. It becomes a lid state.
Next, the closed hinge cap is attached by tapping the container A filled with the content liquid.

When the hinge cap of the present invention is used for the first time, the weakened portion 21 provided on the partition wall 20 of the cap body B can be broken and opened by opening the lid.
First, when a finger is hung on the finger hook portion 40 of the upper lid D and the handle portion 39 is lifted, the bottom wall 23 opposite to the hinge C is lifted together with the pull-up wall 24 engaged with the upper lid D, whereby the hinge C is lifted. The weakened portion 21 on the opposite side begins to break, and by further lifting the upper lid D, the weakened portion 21 breaks in the direction of the hinge C, and finally the weakened portion 21 near the hinge C is broken, and the opening portion is opened. 22 is removed from the partition wall 20, and the portion of the opening portion 22 becomes an opening, so that the content liquid in the container A can be poured out.
In this embodiment, as shown in FIG. 1, the bottom wall 23 on the hinge C side is provided with an inclination so as to be high, and the triangular reinforcing rib 26 is provided on the hinge C side of the pull-up wall 24. , Stress is concentrated on the weakened portion 21 on the opposite side of the hinge C, and the weakened portion 21 is easily broken.
In this embodiment, the protruding portion 24a is formed on the side opposite to the hinge C of the pulling wall 24, so that the stress on the weakened portion 21 on the opposite side of the hinge C is more likely to be concentrated.

By closing the upper lid D to the cap body B again after using the content liquid, a seal portion is formed by the seal cylinder 33 and the pouring cylinder 5 of the upper lid D, and the lid engaging portion 7 of the cap body B is formed. And the engaging recess 38 of the upper lid D are fitted, the inside of the hinge cap can be sealed again, and the upper lid D can be repeatedly opened and closed for use.

At that time, as shown in FIG. 4B, the vane portion 25 provided on the outer periphery of the bottom wall 23 of the cap opening portion 22 has the vane portion 25 while the tip end portion of the vane portion 25 abuts on the upper portion of the partition wall 20. Is bent, and the gap due to the broken portion of the weakened portion 21 can be completely closed by the vane portion 25.
By doing so, even if the container A falls down, the content liquid does not enter the cap body B, and the inside and outside of the cap can be prevented from being contaminated by the content liquid adhering to the opening portion 22 or the like.

The hinge cap of this embodiment can be separated from the container A and discarded after using all the contents of the container A.
In that case, when the hinge cap is opened, the upper lid D is grasped with a finger and pulled outward, the portion of the outer peripheral wall portion 9 connected to the hinge C is pulled and deformed, and a vertical tear line is formed. When the upper lid D is further pulled after being broken, the thin-walled connecting portion 15 forming the circumferential tear line begins to break. As the thin-walled connecting portion 15 breaks, the upper lid D separates from the cap body B.
When the thin-walled connecting portion 15 is completely broken at the end of the slit groove 13 and the upper lid D is further pulled, the cap body B and the container A are disengaged, and the hinge cap and the container A can be separately discarded. can.

In the above embodiment, the hinge cap is attached to the container A as a stopper, but it may be screwed with a screw.
Further, although the weakened portion 21 has the same thin wall on both the side opposite to the hinge C and the hinge C side, the weakened portion 21 may be made thinner so that the side opposite to the hinge C can be easily broken.

The hinge cap of the present invention can be opened with a small force because the weakened portion is easily broken at the first opening of the lid, and has excellent airtightness because it has a partition wall that seals the mouth portion. It can be heat-filled.
In addition, when reused, the gap between the broken parts of the weakened part can be completely closed, the inside and outside of the cap can be prevented from being contaminated by the content liquid, and the hinge for the container for storing the content liquid that requires airtightness. It can be applied to a wide range as a cap.

A Container B Cap body C Hinge D Top lid 1 Mouth 2 Fitting ridge 3 Mounting part 4 Base wall 5 Injection cylinder 6 Locking ridge 7 Lid engaging part 8 Inner cylinder 9 Outer wall 10 Engaging protrusion 11 Outer cutout 11a End face 12 Thin bottom wall 13 Slit groove 14 Bottom surface 15 Thin wall connecting part 20 Partition 21 Weakened part 22 Opening part 23 Bottom wall 24 Pulling wall 24a Protruding part 25 Feather part 26 Reinforcing rib 27 Step part 28 Locking protrusion Part 30 Top wall 31 Side peripheral wall 33 Seal cylinder 34 Engagement wall 35 Engagement hole part 36 Locking part 38 Engagement recess 39 Handle part 40 Finger hook part

Claims (6)

A hinge cap consisting of a cap body attached to the mouth of a container and an upper lid connected to the cap body via a hinge.
The cap body has a mounting part that is mounted on the mouth of the container, a dispensing cylinder that stands inside the mounting part, a partition wall that is connected to the inner circumference of the dispensing cylinder, and a weakening that can be broken by the partition wall. It is provided with an opening part that is defined by the part and serves as a planned opening part.
The opening portion includes a bottom wall that is connected to the partition wall via a weakening portion, and a pull-up wall that is erected on the upper surface of the bottom wall and is pulled up to the upper lid when the cap is opened.
The upper lid includes a top wall, a side peripheral wall suspended from the peripheral edge of the top wall, and a seal cylinder suspended from the lower surface of the top wall to seal the dispensing cylinder.
The bottom wall of the opening portion is a hinge cap characterized in that a deformable wing portion extending outward from below is provided on the outer periphery of the lower portion close to the weakened portion. The hinge cap according to claim 1, wherein the vane portion is curved outward. The hinge cap according to claim 1 or 2, wherein the vane portion extends beyond the position of the weakened portion. The hinge cap according to any one of claims 1 to 3, wherein the bottom wall of the opening portion is inclined so that the hinge side is higher than the side opposite to the hinge. 7. Hinge cap. The top lid has an engaging wall that hangs inside the seal tube.
The pull-up wall has a locking protrusion on the upper surface,
The hinge cap according to any one of claims 1 to 5, wherein the locking protrusion is engaged with an engaging wall when the lid is closed.

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