JP2013075688A - Hinge cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap quickly returning an upper lid deformed by pressing when plugging to an original form when pressing is released, and preventing intrusion of hot water into the cap during hot water showering.SOLUTION: In the hinge cap comprising a cap body and an upper lid, the cap body includes a lid engaging cylinder part and an outer circumferential cylinder part, and a lid-engaging recessed part is provided on an upper face of the outer circumferential cylinder part; a deformable engaging protrusion engaged with the lid-engaging recessed part of the cap body is provided on a lower face of an outer cylinder wall of the upper lid; the outer cylinder wall of the upper lid is pressed downward when plugging and deformed outward; the lower end of the engaging protrusion of the outer circumferential cylinder slides the bottom face of the lid-engaging recessed part of the cap body to form a flow path of air inside and outside the hinge cap; the restoration force of the outer cylinder wall of the upper lid and the restoration force of the engaging protrusion of the outer cylinder wall press up the upper lid upward, to quickly seal inside the hinge cap.

Description

  The present invention relates to a hinge cap in which an upper lid is connected to a cap body attached to a mouth portion of a container via a hinge, and in particular, air in the cap is heated by a heat-sterilized content liquid filled in the container. The present invention relates to a hinge cap that prevents the internal pressure from rising and the upper lid of the cap from opening, and prevents the hot water from being sucked into the cap during cooling by the hot water shower.

  For hinge caps filled with heated content liquid for sterilization, after filling the content liquid, the hinge cap is capped, the inside of the container is sterilized, and then washed and cooled with a hot water shower from the outside of the container. ing.

  In addition, after the cap is plugged, in order to prevent the internal pressure of the air in the cap from rising due to the heat of the content liquid and opening the top lid of the cap, when the internal pressure in the cap rises, An air flow passage is formed in the cap so that the air in the cap escapes to the outside of the container to prevent an increase in internal pressure in the upper lid of the cap (see, for example, Patent Document 1).

JP 2000-272648 A

  However, in the hinge cap described in Patent Document 1, the upper lid is deformed by being pressed with a strong force from the top surface of the upper lid at the time of plugging, and the sealing performance of the engaging portion between the upper lid and the cap body is improved. When the pressure from the top surface is removed, the resilience of the upper lid will return the sealing performance of the engagement portion between the upper lid and the cap body, but the variation as a molded product of the cap, or Due to momentary variations in pressing force at the time of plugging, there are cases where the recovery of the upper lid becomes slow, and when it is washed and cooled in a hot water shower as it is, hot water may enter the cap.

  Further, in the hinge cap described in Patent Document 1, since the air flow passage is formed or closed by the air pressure in the cap, when the air pressure in the cap is high and the air flow passage is formed, When cooling with a hot water shower from outside the container, the air pressure in the cap decreases, and there is a problem that hot water is sucked into the cap together with air before the air flow passage is closed.

  An object of the present invention is to solve the above-mentioned problems, and when an upper lid deformed by pressing at the time of striking is released after pressing, the upper lid is quickly returned to its original shape and air in the cap by heating It is an object of the present invention to provide a hinge cap that can suppress an increase in pressure and prevent hot water from entering the cap during a hot water shower.

  In order to solve the above-described problems, the present invention provides a hinge cap that is attached to a mouth tube portion of a container as a hinge cap, and includes a cap body and an upper lid. The cap body includes a dispensing tube, a lid engaging tube portion, A lid engaging recess is formed on the upper surface of the outer cylindrical portion, and the upper lid is suspended from the top wall, the outer cylindrical wall, and the lower surface of the outer cylindrical wall. There is a deformable engagement protrusion that engages with the engagement recess, and an engagement portion that engages with the lid engagement cylinder portion of the cap body is provided at the lower end of the inner periphery of the outer cylinder wall. Sometimes, when the upper lid is lowered, the outer cylindrical wall of the upper lid is deformed outward while being pressed downward, and the lower end of the engaging projection of the outer cylindrical wall is the bottom surface of the lid engaging recess of the cap body. By sliding toward the outside, an air flow path is formed between the inside and outside of the hinge cap. Restoring force of the outer cylinder wall of the upper lid, and, by the restoring force of the engaging protrusion of the outer cylinder wall, lift the top cover upward, to adopt a configuration, wherein the sealing promptly the hinge cap.

  The hinge cap of the present invention has an annular deformation in which a lid engaging recess is formed in an annular shape on the upper surface of the outer peripheral cylindrical portion of the cap body, and is engaged with the lid engaging recess of the cap body on the lower surface of the outer cylindrical wall of the upper lid. By hanging the possible engaging projections, the upper lid descends when plugging, so that the outer cylindrical wall of the upper lid is deformed outward while being pressed downward, and the outer cylindrical wall is engaged. By sliding the bottom of the lid engaging recess of the cap body outward while the protrusion is deformed, an air flow path is formed between the inside and outside of the hinge cap to discharge air to the outside of the container. After the stopper is closed, the upper lid is lifted upward by the restoring force of the outer cylinder wall of the upper lid and the restoring force of the engaging projection, and the air flow passage is instantly restored to seal the air flow path. Can be quickly sealed.

  By exhausting the air in the container and quickly sealing the air flow path, the inside of the hinge cap is made slightly negative pressure, and even if the air in the cap rises due to heating, the upper lid can be opened. It is possible to prevent the upper lid from being opened without increasing the pressure.

It is explanatory drawing of the hinge cap of this invention, (a) is a sectional side view, (b) is a principal part enlarged view. It is explanatory drawing at the time of lid opening of a hinge cap, (a) is a top view, (b) is a sectional side view. It is explanatory drawing of the hinge cap at the time of a stopper, (a) is a sectional side view, (b) is a principal part enlarged view.

Next, the hinge cap of this invention is demonstrated with reference to drawings.
In FIG. 1, A is a cap body that is plugged into the container body, and B is an upper lid that is integrally formed with the cap body A via a hinge C.

As shown in FIGS. 1 and 2, the cap body A includes a bottom wall 1, a pouring cylinder 2 standing on the periphery of the bottom wall 1, and a ring-shaped upper wall 3 connected to the periphery of the bottom wall 1. A lid engaging cylinder portion 4 erected on the upper surface of the upper wall 3, an inner cylinder 5 suspended from the lower surface of the upper wall 3, and an outer edge of the upper wall 3. The outer peripheral cylinder part 6 which provides the hinge C in a row is provided.
The cap body A is attached to the mouth tube portion of the container body by sandwiching the mouth tube portion of the container body between the outer periphery of the inner tube 5 and the inner periphery of the outer tube portion 6 at the time of stoppering.

  The bottom wall 1 is provided with a thin weakened portion 10 that opens the spout. On the upper surface of the bottom wall 1, a pull ring 11 that is pulled up when the spout is opened is provided with a column in the section of the weakened portion 10. It is erected through.

  On the inner periphery of the dispensing tube 2, an engagement rib 12 is provided on the hinge C side so as to extend from below to a predetermined height.

  The lid engaging cylinder portion 4 has a flat upper surface and a bulging portion 15 having an enlarged diameter on the outer periphery.

A lid engaging recess 16 is annularly formed on the upper surface of the outer cylindrical portion 6.
The lid engaging recess 16 is formed with a certain width between the outer side and the inner side, and the bottom surface 16a is formed in a plane.

The upper lid B is suspended from the top wall 20 and the periphery of the top wall 20, and is suspended from the outer cylinder wall 21 connecting the hinge C to a predetermined position at the lower end of the outer periphery, and the lower surface of the top wall 20. The inner cylinder wall 22 inserted in the inner periphery of the extraction | pouring cylinder 2 is provided.
An annular engagement protrusion 23 that engages with the lid engagement recess 16 of the outer peripheral cylinder portion 6 of the cap body A is suspended from the lower surface of the outer cylinder wall 21, and the engagement protrusion 23 has a thickness. It is smaller than the width of the lid engaging recess 16 and is formed to be deformable inward and outward.

On the opposite side of the outer peripheral lower end of the outer cylindrical wall 21 to the hinge C, a knob 24 is disposed. The inner peripheral lower end of the outer cylindrical wall 21 is enlarged in diameter, and the lid engaging cylindrical portion 4 of the cap main body A is expanded. An engaging portion 25 is provided to engage with.
On the side of the knob portion 24 on the lower surface of the outer cylindrical wall 21, the air escape extends from the inside to the inner side of the lower surface of the knob portion 24, and a part of the engaging projection 23 is cut out from the lower surface to be recessed. A groove 26 is provided.

The engaging portion 25 is formed of an upper inner surface 25 a that engages with the upper surface of the lid engaging cylinder portion 4 of the cap body A when the cap is closed, and a side inner surface 25 b that engages with the outer periphery of the lid engaging cylinder portion 4. ing.
An air escape groove 27 is recessed at a predetermined position on the upper inner surface 25a, and an engagement recess 28 that engages with the bulging portion 15 of the lid engaging cylinder portion 4 is recessed on the side inner surface 24b. .

  The lid engaging recess 16 of the cap body A and the engaging projection 23 of the upper lid B are located inside the lid engaging recess 16 when the lid is closed, and inside the lower end of the engaging projection 23. Is formed so as to contact the inner side of the bottom surface 16 a of the lid engaging recess 16.

Next, the effect of the hinge cap of this invention is demonstrated.
When the engagement concave portion 28 of the engagement portion 25 of the outer cylinder wall 21 of the upper lid B is engaged with the bulging portion 15 of the lid engagement cylinder portion 4 of the cap body A, and the upper lid B is closed to the cap body A, As shown in FIG. 1, an air chamber a is formed inside the hinge cap and an inner tube wall 22 of the cap body A and the inner tube wall 22 of the upper lid B, and an air chamber b is formed outside.

  Further, when the lid is closed, the outer cylinder of the upper lid B is formed on the upper surface of the engagement portion 25 of the upper lid B on the upper surface of the lid engaging cylinder portion 4 of the cap main body A and the upper surface of the outer peripheral cylinder portion 6 of the cap main body A. While the lower surface of the wall 21 abuts, the inner side of the engaging projection 23 of the outer cylindrical wall 21 of the upper lid B abuts on the inner side of the bottom surface 16a of the lid engaging recess 16 of the outer peripheral cylindrical portion 6 of the cap body A. ing.

  When mounting the hinge cap, first, the container body is filled with the heated content liquid, and the closed hinge cap is plugged into the mouth tube portion of the container body from above.

In the hinge cap before the stopper, the air flow path between the air chamber a and the air chamber b is formed by the engagement between the inner peripheral surface of the extraction cylinder 2 of the cap body A and the outer periphery of the inner cylinder wall 22 of the upper lid B. Blocked.
Further, the engagement between the side inner surface 25b of the engagement portion 25 and the engagement recess 28 surface of the outer cylinder wall 21 of the upper lid B and the outer surface and the bulging portion 15 surface of the lid engagement cylinder portion 4 of the cap body A is performed. The air flow path between the air chamber b and the outside of the hinge cap is blocked.

At the time of stoppering, a strong pressing force is applied from the upper part of the upper cover B of the hinge cap, and the upper cover B is pressed against the cap body A and descends.
When the upper lid B descends, the lower end of the outer periphery of the inner cylindrical wall 22 of the upper lid B slides on the inner peripheral surface of the extraction cylinder 2 of the cap body A, and when further lowered, the outer peripheral lower end of the inner cylindrical wall 22 is The abutting portion of the inner cylinder wall 22 is deformed inward and forms a slight gap.

  As a result, the upper lid B is lowered with respect to the cap body A, and the pressed air in the air chamber a is discharged into the air chamber b with a slight gap as a flow passage.

  Further, when the upper lid B is pressed against the cap body A, the upper surfaces of the lid engaging cylindrical portion 4 and the outer peripheral cylindrical portion 6 of the cap main body A, and the lower surfaces of the engaging portion 25 of the upper lid B and the outer cylindrical wall 21 As a result of the engagement, the outer cylinder wall 21 of the upper lid B is deformed outward while being pressed downward.

  As shown in FIG. 3, the outer cylindrical wall 21 of the upper lid B is deformed so that the lower end of the engaging projection 23 of the outer cylindrical wall 21 of the upper lid B is connected to the outer cylindrical portion 6 of the cap body A. While sliding outward along the bottom surface 16a of the joint recess 16, the engaging projection 23 is deformed and crushed.

  Further, when the outer cylindrical wall 21 of the upper lid B is further deformed, the outer surface of the engaging projection 23 abuts on the outer surface of the lid engaging recess 16 of the cap body A, so that the outer cylindrical wall 21 moves outward. Deformation heading is stopped.

  When the outer cylindrical wall 21 of the upper lid B is deformed outward, the side inner surface 25b and the engagement concave portion 28 of the engaging portion 25 of the upper lid B, the outer peripheral surface and the swelling of the lid engaging cylindrical portion 4 of the cap body A The engagement with the surface of the protruding portion 15 is released, and a gap is created.

  Then, the upper lid B descends with respect to the cap body A, and the air in the pressed air chamber b passes through the air release groove 27 provided in the upper inner surface 25a of the engaging portion 25 of the upper lid B, and passes through the upper lid B. The air escape groove 26 is formed in a recess formed in the lower surface of the outer cylindrical wall 21 of the upper lid B through the gap between the side inner surface 25b of the engaging portion 25 and the outer peripheral surface of the lid engaging cylindrical portion 4 of the cap body A. It is discharged out of the container.

After completion of the plugging, the pressing force on the upper lid B is removed.
At that time, due to the restoring force of the inner cylinder wall 22 of the upper lid B, the lower end of the outer periphery of the inner cylinder wall 22 is disengaged from the engaging rib 12 of the inner circumference of the extraction cylinder 2 and also due to the restoring force of the outer cylinder wall 21 of the upper lid B. The lower end of the engaging projection 23 of the outer cylindrical wall 21 of the upper lid B slides inward along the inclined surface of the bottom surface 16a of the lid engaging recess 16 of the outer peripheral cylindrical portion 6 of the cap body A, and When the engaging protrusion 23 is restored to its original shape, the upper lid B acts to lift upward, so that the upper lid B is raised with respect to the cap body A, and the hinge cap is quickly returned to its original state. It is.

As shown in FIG. 1, the air between the air chamber a and the air chamber b is again engaged with the inner peripheral surface of the extraction cylinder 2 of the cap body A and the lower outer periphery of the inner cylinder wall 22 of the upper lid B. Since the flow passage is quickly sealed, the inside of the air chamber a communicating with the outside air has a slightly negative pressure.
Further, the engagement between the side inner surface 25b of the engaging portion 25 and the engaging concave portion 28 of the outer cylindrical wall 21 of the upper lid B, and the outer peripheral surface and the bulging portion 15 of the lid engaging cylindrical portion 4 of the cap main body A causes the air. Since the air flow path between the chamber b and the outside of the container is quickly sealed, the air chamber b also has a slight negative pressure.

Even if the air in the hinge cap is heated by the heated liquid in the container or the hot water shower, the inside of the cap has a slightly negative pressure, so the increase in the internal pressure in the hinge cap can be kept low. it can.
For this reason, even if the internal pressure in the hinge cap increases, it is possible to prevent the upper cover B of the hinge cap from opening the cap body A due to the increase in internal pressure.

As described above, the hinge cap of the present invention is deformed outward while the outer cylindrical wall 21 of the upper lid B is pressed downward against the cap body A at the time of stoppering, so that the outer cylindrical wall of the upper lid B is deformed. The engagement protrusions 23 of the cap 21 are in contact with the bottom surface 16a of the lid engagement recess 16 of the outer peripheral cylindrical portion 6 of the cap body A and are deformed, and are slid outward along the bottom surface 16a.
After the end of the stopper, the engaging projection 23 of the outer cylinder wall 21 of the upper lid B slides inward within the lid engaging recess 30 due to the restoring force of the outer cylinder wall 21 of the upper lid B. The outer cylinder wall 21 is lifted upward by the restoring force of the portion 23, and the side inner surface 25b of the engagement portion 25 of the outer cylinder wall 21 and the outer peripheral surface of the lid engagement cylinder portion 4 are quickly returned to the engaged state, Since the air flow path between the air chamber b and the outside of the container is quickly sealed, the inside of the air chamber b has a slightly negative pressure, and water from the hot water shower is prevented from entering inside the air chamber b. it can.

  Further, at the time of plugging, the outer surface of the engaging projection 23 of the outer cylindrical wall 21 of the upper lid Ba abuts on the outer surface of the lid engaging recess 16 of the outer peripheral cylindrical portion 6 of the cap main body Aa, so The cylindrical wall 21 is prevented from being deformed outward.

  In the present invention, the hinge cap is plugged into the container so that the inside of the hinge cap is slightly negative pressure. The liquid in the container or the air in the hinge cap is heated by the hot water shower, and the upper cover of the hinge cap is removed. Since the cover can be prevented from being opened, it can be widely used as a hinge cap for containers of various liquids to be heated and filled.

A Cap body B Top lid C Hinge 1 Bottom wall 2 Extraction cylinder 3 Top wall 4 Lid engagement cylinder part 5 Inner cylinder 6 Outer cylinder part 10 Weakening part 11 Pull ring 12 Engaging rib 15 Swelling part 16 Lid engaging recess 16a Bottom 20 top wall 21 outer cylinder wall 22 inner cylinder wall 23 engagement protrusion 24 knob 25 engagement part 25a upper inner surface 25b side inner surface 26, 27 air escape groove 28 engagement recess

Claims (1)

In the hinge cap attached to the mouth tube portion of the container and consisting of a cap body and an upper lid,
The cap body includes a dispensing tube, a lid engaging tube portion, and an outer tube portion,
On the upper surface of the outer cylindrical portion, a lid engaging recess is provided,
The upper lid includes a top wall, an outer cylinder wall, a deformable engagement protrusion that is suspended from the lower surface of the outer cylinder wall and engages with a lid engagement recess of the cap body,
At the lower end of the inner periphery of the outer cylinder wall, an engaging part that engages with the lid engaging cylinder part of the cap body is provided,
When the upper lid is lowered during the plugging, the outer cylindrical wall of the upper lid is deformed outward while being pressed downward, and the lower end of the engaging projection of the outer cylindrical wall is the lid engaging recess of the cap body. The air flow path between the inside and outside of the hinge cap is formed by sliding the bottom surface of the hinge outward.
A hinge cap characterized in that, after the end of the stopper, the upper lid is lifted upward by the restoring force of the outer cylindrical wall of the upper lid and the restoring force of the engaging protrusion of the outer cylindrical wall, and the inside of the hinge cap is quickly sealed. .

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