JP2023161900A - hinge cap - Google Patents

Abstract

To provide a hinge cap in which the vicinity of a pulling top of a transition plug is not lifted up even when the internal pressure in the hinge cap rises, and a gap is not formed in an engaging part between an upper lid and a cap body.SOLUTION: A hinge cap of the present invention comprises: a cap body A attached to a container body D and having a pouring cylinder 6; and a top lid B connected to the cap body A via a hinge C, wherein the cap body A has a partition wall 5 closing the inner periphery of the pouring cylinder 6, and a transition plug 9 which is defined by a breakable thin-walled weakening portion 8 in the partition wall 5, and in which when the top lid B is opened, the thin-walled weakened portion 8 is broken and the transition plug is transferred from the cap body A side to the top lid B side. The transition plug 9 has an upper drawer 12 on the pouring direction side, the top lid B has an engagement portion 39 that engages with the upper drawer 12 of the transition plug 9, and the partition wall 5 has a thick-walled portion 18 formed along the thin-walled weakened portion 8 on the pouring direction side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hinge cap, and particularly to a hinge cap that includes a transition stopper that can be opened simply by opening the top cover.

Conventionally, in a hinged cap consisting of a cap body attached to a container body and an upper lid connected to the cap body via a hinge, an opening for a spout is provided in a partition wall of the cap body in order to ensure the sealing performance of the container body. The planned portion was defined by a breakable thin-walled weakened portion and formed an opening portion provided with a pull ring or the like.

Therefore, in order to open the cap, it is necessary to open the top lid and then pull up the pull ring to remove the cap, which is time-consuming and difficult for users with weak strength to open. There was a problem.
For this reason, the pull ring is omitted, and the pull-up wall installed in the transition stopper as the opening part is engaged with the engagement wall installed vertically from the top cover, and the pull-up wall and the pull-up wall are moved together when the top cover is opened. BACKGROUND ART Hinge caps have been known that are opened by pulling up a stopper and breaking a thin weakened portion (see, for example, Patent Document 1).

JP 2021-84659 Publication

However, in the hinge cap described in Patent Document 1, when the content liquid is heat-resistant filled, sterilized in a high-temperature shower, and then cooled with water, the internal pressure inside the hinge cap increases and the thin weakened portion does not break. However, because the area around the retractable part of the transition plug is lifted up and the retractable part and the top wall of the upper cover are connected, a gap is created at the engagement part between the upper cover and the cap body, causing a problem where cooling water is sucked into the hinged cap. there were.

The present invention aims to solve the above-mentioned problems, and provides a hinge in which the vicinity of the pull-up part of the transition stopper does not rise even when the internal pressure inside the hinge cap increases, and no gap is created between the engagement part of the top cover and the cap body. The purpose is to provide a cap.

In order to solve the above problems, the present invention provides a hinge cap that is attached to a container body and includes a cap body having a pouring tube, and an upper lid that is connected to the cap body via a hinge. The cap body is defined by a partition wall that closes the inner periphery of the spout barrel and a breakable thin weakened part in the partition wall. The transition stopper has a pull-up part on the side in the pouring direction, the upper lid has an engaging part that engages with the pull-up part of the transition stopper, and the partition wall has a pull-up part on the side in the pouring direction. A configuration characterized by having a thick wall portion formed along a thin wall weakening portion is adopted.

As an embodiment of the hinge cap, a configuration is adopted in which the thick part has an inclined surface at least on the side of the pouring cylinder or the side of the thin weakened part, and the thick part has a slope in the pouring direction in plan view. It adopts a configuration characterized by a V-shape that narrows toward the sides.

By adopting the above configuration, the hinge cap of the present invention suppresses deformation of the transition stopper by reinforcing the partition wall on the side in the pouring direction, and prevents the upper lid from lifting even when the internal pressure inside the hinge cap increases and closes the lid. It is possible to maintain the lid state.

It is a figure which shows the state in which the hinge cap of the Example of this invention was attached to the container main body, (a) is a side sectional view when a top cover is closed, (b) is a top view of a cap main body. It is a figure which shows the opened state of the molded hinge cap of the Example of this invention, (a) is a top view, (b) is a side sectional view. It is an enlarged view of the main part of FIG. 1(b), (a) is a view before opening, and (b) is a view after opening. 1(b) is a diagram showing the state of the cross section taken along the line O-O in FIG. 1(b), where (a) is an enlarged view when no thick part is formed on the partition wall of the cap body, and (b) is an enlarged view when a thick part is formed on the partition wall of the cap body. It is an enlarged view of the time.

Next, the hinge cap of the present invention will be explained with reference to the drawings shown in the following embodiments.
In the following explanation, when looking at FIG. 1(a), the left direction will be referred to as the "pour direction side," the right direction will be referred to as the "hinge side," the upper direction will be referred to as "upper," and the lower direction will be referred to as "lower." do.

In FIG. 1, A is a cap body attached to a container body D, and B is an upper lid connected to the cap body A via a hinge C so as to be openable and closable.
The container body D has an opening 1 at the top, and an engaging protrusion 2 is provided on the outer periphery of the opening 1.
In this embodiment, the container body D is assumed to be a glass bottle. Note that the container body D may be in the form of a container made of synthetic resin.

As shown in FIGS. 1 to 3(a), the cap body A includes a partition wall 5 that seals the mouth portion 1 of the container main body D, a pouring tube 6 erected from the upper surface of the outer edge of the partition wall 5, and a partition wall 5. It consists of a mounting part 7 provided on the outer edge of the mouth part 1 and mounted on the mouth part 1.

The partition wall 5 is provided with a transition stopper 9 defined by a breakable thin weakened portion 8 on the inner peripheral side of the spout cylinder 6 in order to open the spout 10 during use.
The thin-walled weakened portion 8 has a front side portion 8a formed on the side of the partition wall 5 in the pouring direction in order to facilitate the breakage of the thin-walled weakened portion 8. A liquid guide portion 10a having a sharp corner at an angle α is formed on the pouring direction side.
Note that the angle α is an acute angle of 50 to 80°.

In the transition stopper 9, a bottom wall 11 having a tip portion 11a with a sharp corner at an angle α on the pouring direction side is partitioned by a thin weakened portion 8, and a top surface of the bottom wall 11 has a tip portion 11a on the pouring direction side. A substantially cylindrical pulling part 12 is erected on the side, and a holding wall 13 is erected along the inside of the thin weakened part 8 except for the pulling part 12.
A reinforcing rib 14 is provided on the rear side of the pull-up part 12 from the upper part toward the upper surface of the bottom wall 11.
In this embodiment, a chevron-shaped engagement protrusion 16 is provided on the upper surface of the pulling part 12 via a step part 15 so as to cover the pulling part 12.

On the upper surface of the partition wall 5 on the pouring direction side, from the inner periphery of the pouring tube 6 to the front side 8a of the thin weakened portion 8, there is formed a V-shape in plan view from the inner circumference of the pouring tube 6 to at least the position of the engagement protrusion 16. A thick wall portion 18 extending on both sides is provided in a protruding manner.
The thick wall portion 18 has a mountain-shaped cross section, and includes an inner surface 18a (thin wall weakened portion side) extending upward from both sides of the liquid guide portion 10a formed in the spout 10 after the cap is removed, and an upper end portion of the inner surface 18a. and inclined surfaces 18b (on the spout cylinder side) that extend downwardly from the top portion 18c toward the outside and on the spout cylinder 6 side.
Note that the cross-sectional shape of the thick portion 18 is not limited to a mountain shape, so it is not necessarily necessary to provide an inclined surface. It becomes easier to collect.

The mounting part 7 includes an inner cylinder 20 that is vertically provided from the outer periphery of the partition wall 5 and whose outer periphery is inserted into the inner periphery of the opening 1 of the container body D, and an outer cylinder whose inner periphery engages with the outer periphery of the opening 1. 21, and an annular upper wall 22 that is connected to the upper ends of the inner cylinder 20 and the outer cylinder 21, and a lid engaging part 23 is provided upright on the upper part of the upper wall 22. A bulging portion 23a is provided that protrudes outward from the top of the holder.

The outer cylinder 21 has a hinge C connected to it around the upper end on the back side of the outer periphery, and an engagement protrusion 24 that engages with the engagement protrusion 2 provided on the outer periphery of the mouth part 1 at the lower part of the inner circumference. is installed protrudingly.

As shown in FIGS. 1(b) and 2(a), the outer cylinder 21 has a substantially V-shaped outer circumferential notch 25 cut from above on the outer circumferential surface near the left side when viewed from the hinge C. The slit groove 26 is formed so that it extends within a predetermined range (approximately 350° in this embodiment) in the circumferential direction on the back side starting from a position across the upper thin wall portion on the inner circumferential side of the outer circumferential cut portion 25. The connecting portion 27 is provided so as to pass through the upper and lower portions, and the portion between the outer circumferential cut portion 25 and the end point of the slit groove 26 is a connecting portion 27 .
The lower end of the slit groove 26 is spaced at least in a range where the hinge C is located on the back side, a predetermined range of the weakened bottom wall 28 on the connecting part 27 side, and a predetermined range between the weakened bottom wall 28 and the connecting part 27. It is connected by a plurality of weakening pieces 29 which are opened and arranged.

Therefore, when the hinge cap of this embodiment is disposed of, when the top lid B is pulled down via the hinge C, the outer circumferential notch 25 is aligned with the vertical tear line, the weakened bottom wall 28 at the lower end of the slit groove 26, and the weakened piece 29. becomes a circumferential tear line, and the outer cylinder 21 is torn in the circumferential direction starting from the outer circumferential notch 25, and finally becomes a string-like string connected at the connecting part 27, and the connecting part 27 is pulled in a concentrated manner. The engagement between the engaging protrusion 24 and the opening 1 of the container body D is gradually disengaged, and the hinge cap can be easily separated from the container body D, separated and disposed of.

As shown in FIGS. 1 and 2, the upper lid B includes a flat top wall 30 and a side wall 31 hanging from the periphery of the top wall 30. On the outer periphery of the side wall 31, there is a A hinge C is provided in series, and a handle portion 32 is provided protruding from the lower portion on the side in the pouring direction.

The top wall 30 has a sealed envelope 35 hanging from the bottom, a holding wall 36 inside the tight envelope 35, and an abutment rib 37 at the center of the inner circumference of the holding wall 36 on the back side. An engagement hole 38 is opened in the pouring direction side of the envelope 35, and the inner periphery of the engagement hole 38 is provided with a step at the lower part to engage with the engagement protrusion 16 on the upper part of the pull-up part 12. A locking portion 39 is provided.
The sealed envelope 35 is provided so that its outer periphery is in close contact with the inner periphery of the dispensing tube 6 of the cap body A when the lid is closed, and the holding receiving wall 36 has a lower end that is connected to the upper end of the holding vertical wall 13 of the transition stopper 9. The abutment ribs 37 are provided at least in the range where the holding wall 13 is erected so as to engage or abut, and the abutment ribs 37 are provided so that the outer tip portion approaches or abuts the inner upper end of the holding wall 13. .

In this embodiment, as shown in FIG. 1(a), when the lid is closed, the upper part of the engagement protrusion 16 passes through the engagement hole 38, and the engagement protrusion 16 is processed to prevent it from coming off by melting or the like. The upper part of the portion 16 is widened to fill the engagement hole 38, and the engagement protrusion 16 is engaged with the upper surface of the engagement portion 39.
In this embodiment, the engagement protrusion 16 is provided above the pull-up part 12, and the engagement hole 38 is opened in the upper lid B, so that when the lid is closed after molding, the engagement protrusion 16 passes through the upper part of the engagement protrusion 16. Although the engaging part 39 is engaged with the engaging part 39 by fastening, the method is not limited to this, and depending on the method of engaging the pulling part 12 and the engaging part 39 of the upper cover B, the engaging hole part 38 may be opened in the upper cover B. Alternatively, an insert body of a separate member may be inserted through the engagement hole 38 and engaged with the pull-up portion 12. Furthermore, the engagement portion protruding downward from the top cover B may be inserted into the bottom. It may be inserted into, fitted into, or welded to a pull-up part opened in the wall 11 or a pull-up part projected from below the bottom wall 11; in short, any method can be used as long as the two can be securely engaged. But that's fine.

An engaging recess 40 that engages with the lid engaging portion 23 and the bulging portion 23a of the cap body A to maintain the closed state is provided around the inner periphery of the side peripheral wall 31.

Next, the usage mode and effects of this embodiment will be explained.
The hinge cap of this example is manufactured in one piece by injection molding using a metal mold in the open state shown in FIG.
Next, by rotating the upper lid B connected to the cap body A via the hinge C, the upper lid B is set on the cap body A and brought into the closed state shown in FIG. 1(a).

At this time, the engagement protrusion 16 formed on the pull-up part 12 of the transition stopper 9 of the cap body A is inserted into the engagement part 39 formed on the top wall 30 of the upper lid B, and the engagement protrusion 16 is inserted into the engagement part 39 formed on the top wall 30 of the upper lid B. The upper part reaches the engagement hole 38, and the lower outer periphery of the engagement protrusion 16 fits within the inner periphery of the engagement part 39.
The upper end of the holding wall 13 of the transition stopper 9 engages with or abuts the lower end of the holding wall 36 of the upper lid B, and the outer periphery of the contact rib 37 contacts or approaches the inner periphery of the holding wall 13.

The sealed envelope 35 of the top lid B forms a seal portion in close contact with the spout tube 6 of the cap body A, and the lid engagement portion 23 of the cap body A and the engagement recess 40 of the top lid B fit together. The lid is closed.
In the lid closed state, the upper part of the engaging protrusion 16 is treated to prevent it from coming off by melting or the like, and the engaging protrusion 16 is engaged with the engaging part 39, and the cap body A is attached to the top wall 30 of the upper lid B. A transition stopper 9 is installed.

Next, the closed hinge cap is plugged and attached to the opening 1 of the container main body D filled with the liquid at about 50° C. to 60° C., thereby forming a container with the hinge cap attached.
In this embodiment, the hinge cap is attached to the container body D by plugging, but it may also be attached by screwing.

When the hinge cap of this example is exposed to a high-temperature shower (e.g., 70°C or higher) for sterilization or cleaning after capping, the air inside the top lid B is warmed and the internal pressure increases, causing the cap body to Attempt to raise the top cover B relative to A.
When the top lid B lifts up, the tip 11a of the bottom wall 11 is pulled through the pulling part 12 of the transition stopper 9 attached to the inside of the top lid B in the pouring direction, causing the thin wall in the vicinity of the tip 11a to weaken. The front side part 8a of the part 8 and the pouring direction side of the partition wall 5 connected thereto are also pulled upward.

Therefore, in the conventional hinge cap, when the tip 11a of the bottom wall 11 is pulled up via the pulling part 12 of the transition stopper 9, the dispensing direction side of the partition wall 5 is raised as shown in FIG. The dispensing tube 6 is deformed upward to the right toward the thin-walled weakened portion 8, and the dispensing direction side of the transition stopper 9 is lifted, and the top lid B is lifted from the cap body A, causing the lid engaging portion 23 and the engaging recess 40 to A gap may be created in the engaging part of the shower head, which may cause shower water to be sucked in from the outside.

On the other hand, in the hinge cap of this embodiment, thick portions 18 are provided protruding from the upper surface of the partition wall 5 on the pouring direction side on both sides with the front side portion 8a of the thin weakened portion 8 interposed therebetween. Even if the wall thickness of the partition wall 5 in that part becomes thicker and the tip end 11a of the bottom wall 11 is pulled up through the pulling part 12 of the transition plug 9, the partition wall 5 will be deformed as shown in FIG. 4(b). This prevents the transition stopper 9 from lifting up, thereby preventing a gap from being formed at the engagement portion between the lid engagement portion 23 and the engagement recess 40.

When using the hinge cap of this embodiment for the first time, when you put your finger on the handle 32 of the upper lid B of the hinge cap and lift it up, the upper lid B is lifted from the pouring direction side using the hinge C as a fulcrum, and the upper lid B The lid engaging portion 23 of the cap body A is disengaged from the engaging recess 40 of the cap body A, and the lid is opened.
Furthermore, by continuing to open the top lid B, the thin weakened portion 8 provided on the partition wall 5 of the cap body A breaks, and the transition stopper 9 is removed from the partition wall 5 and then transferred to the top lid B. While the cap body A is supported, as shown in FIG. 3(b), the trace of the transition stopper 9 removed from the partition wall 5 becomes the spout 10, and the content liquid in the container body D is poured out. It becomes possible.

In this embodiment, since the reinforcing rib 14 is provided on the back side of the pulling part 12, stress concentrates on the thin weakened part 8 on the pouring direction side, making it easy to break the thin weakened part 8. The tip portion 11a of the bottom wall 11 on the outlet side and the front side portion 8a of the thin weakened portion 8 have a sharp shape, and stress is concentrated on the corner of the thin weakened portion 8 on the pouring direction side. The transition stopper 9 can be removed at any time.

The partition wall 5 with the spout 10 opened becomes a V-shaped liquid guide portion 10a toward the spout direction side of the spout 10, and since the inner surfaces 18a of the thick portions 18 on both sides are continuous, the spout When the container is tilted in the direction, the liquid content exiting from the partition wall 5 to the inner periphery of the spouting cylinder 6 can be guided by the liquid guide portion 10a and its surroundings, and can be stably poured from the spouting cylinder 6.

After dispensing the content liquid, when the container is returned to the upright position, the liquid adhering to the inner periphery of the dispensing tube 6 flows down and is returned inward through the liquid guide portion 10a of the partition wall 5, and also flows through the thick wall portions 18 on both sides. The liquid flows to the sloped surface 18b of the spout 10, is guided to both sides by the respective slopes, and is collected from both sides of the spout 10, so that the liquid content accumulates near the sharp part of the liquid guide portion 10a of the spout 10. There is no need to put it away.

In this embodiment, a front side part 8a and a tip part are provided with a corner part having an angle α (an acute angle of 50 to 80 degrees) on the pouring direction side of the thin weakened part 8 of the partition wall 5 and the bottom wall 11 of the transition stopper 9. 11a, and after removing the transition stopper 9, a V-shaped liquid guide portion 10a with a sharp corner at an angle α was provided at the spout 10. If it becomes easier to guide the liquid from the outlet 10, the thin weakened portion 8 of the partition wall 5 and the tip 11a of the bottom wall 11 of the transition stopper 9 may also have a gentle corner or an arc, even if they are not sharp. Good too.

Further, the shape of the thick wall portion 18 provided on the upper surface of the partition wall 5 only needs to be formed along both sides of the thin wall weakening portion 8 and the bottom wall 11 of the transition stopper 9 in the pouring direction. The shape does not have to be a linear shape such as a V-shape, but may be a curved shape such as an arc shape in accordance with the shape of the thin weakened portion 8.

The thick part 18 only needs to prevent the top lid B from lifting up without deforming the pouring direction side of the partition wall 5 of the cap body A when the internal pressure inside the top lid B increases after capping. It is desirable that the wall thickness is 1.6 mm or more.

After using the content liquid, by closing the top lid B on the cap body A again, a seal is formed between the airtight envelope 35 of the top lid B and the spout tube 6, and the lid engaging portion of the cap body A is closed. 23 and the engagement recess 40 of the top lid B are fitted together to re-seal the inside of the hinge cap, and the top lid B can be used by repeatedly opening and closing it.
Further, the transition stopper 9 is held by the outer periphery of the holding vertical wall 13 engaging or abutting the inner periphery of the holding receiving wall 36 of the upper lid B, so that the bottom wall 11 of the transition stopper 9 holds the partition wall 5 of the cap body A. The spout 10 is closed.

The hinge cap of the present invention suppresses the deformation of the transition stopper by reinforcing the partition wall on the pouring direction side, so even if the internal pressure inside the hinge cap increases, the area around the pull-up part of the transfer stopper does not lift up, and the upper lid and cap Since there is no gap in the engagement part with the main body, it can be used in a wide range of applications as a hinge cap that does not absorb shower water even if you take a high-temperature shower for sterilization.

A Cap body B Top lid C Hinge D Container body α Angle 1 Mouth 2 Engagement protrusion 5 Partition 6 Spout tube 7 Mounting part 8 Thin weakened part 8a Front side part 9 Transition stopper 10 Spout 10a Liquid guide part 11 Bottom wall 11a Tip part 12 Pulling part 13 Holding wall 14 Reinforcing rib 15 Step part 16 Engagement protrusion 18 Thick part 18a Inner surface 18b Inclined surface 18c Top part 20 Inner cylinder 21 Outer cylinder 22 Upper wall 23 Lid engaging part 23a Swelling part 24 Engagement protrusion 25 Peripheral notch 26 Slit groove 27 Connecting portion 28 Weakened bottom wall 29 Weakened piece 30 Top wall 31 Side peripheral wall 32 Handle portion 35 Sealed envelope 36 Holding wall 37 Contact rib 38 Engagement hole 39 Engagement Part 40 Engagement recess

Claims (3)

A hinged cap consisting of a cap body attached to a container body and having a pouring tube, and an upper lid connected to the cap body via a hinge,
The cap body is defined by a partition wall that closes the inner periphery of the pouring barrel and a breakable thin weakened part in the partition wall, and when the top lid is opened, the thin weakened part is broken and transferred from the cap body side to the top lid side. with a transition stopper,
The transition stopper has a pulling part on the side in the pouring direction,
The upper lid has an engaging part that engages with a pulling part of the transition stopper,
A hinge cap characterized in that the partition wall has a thick wall portion formed along a thin weakened portion on the pouring direction side. The hinge cap according to claim 1, wherein the thick wall portion has an inclined surface at least on the side of the pouring tube or the thin weakened portion side. 3. The hinge cap according to claim 1, wherein the thick portion has a V-shape that becomes narrower toward the pouring direction side in plan view.

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