JP6363036B2 - Stopper cap - Google Patents

Description

  The present invention relates to a stopper cap that can be fitted and attached to a mouth portion of a container body by means of a stopper, and more particularly to a stopper cap that can be fitted to a mouth portion in which a screw is formed.

  As a beverage container such as a soft drink, a synthetic resin container, a so-called PET bottle, having a screw formed in a substantially cylindrical mouth portion and having a screw cap screwed to the screw is widely used. (For example, refer to Patent Document 1).

However, such a synthetic resin container has a low efficiency because the screw cap has to be tightened in the filling step of filling and sealing the contents.
Further, the screw cap cannot be opened and closed with one hand, which is inconvenient for use as a food container such as a seasoning used while cooking.
Conventionally, for food containers such as seasonings, a hinge cap in which an upper lid is continuously provided via a hinge on a cap body having a dispensing cylinder has been widely used.
As a hinge cap, a locking ridge is provided on the inner periphery of the lower part of the cap body, and the locking ridge gets over the locking jaw portion of the container mouth by the stopper and engages with the mouth. What has been known is widely known (for example, see Patent Document 2).

JP-A-8-48350 JP 2003-72818 A

The hinge cap described in Patent Document 2 can be fitted and attached to the mouth portion by simply plugging it from the top in the filling step, and can be efficiently filled and sealed.
However, since the hinge cap described in Patent Document 2 requires a dedicated container having a locking jaw at the mouth, it is difficult to use it for a general-purpose beverage container having a screw part such as a PET bottle. It was.
In addition, since the length of the tube portion that fits into the mouth portion is relatively short, it is plugged while being placed on the mouth portion while the cap is tilted in the stoppering step, and bites into the mouth portion to cause problems. There was a problem.

  It is an object of the present invention to solve the above-mentioned problems, and it is not necessary to prepare a container body having a special mouth portion for a stopper cap, and can be used for a general-purpose beverage container having a screw portion. An object of the present invention is to provide a stopper cap that is easy to manage and that is reliably centered so as not to be plugged while tilting in the stoppering process.

  In order to solve the above-mentioned problem, the present invention includes a fitting tube portion having a fitting groove that fits into the mouth portion of the container body as a stopper cap, and the fitting tube portion sandwiches the fitting groove. An outer cylinder on the outer circumference side, an inner cylinder on the inner circumference side, and a base wall that connects the outer cylinder and the inner cylinder at the upper part of the fitting groove. A centering surface is provided in contact with the top of the thread of the provided screw part, and a locking ridge that engages with a locking ring provided below the threaded part of the mouth protrudes below the centering surface. The diameter of the locking protrusion is the same as or larger than the centering surface and smaller than the locking ring.

  As a specific embodiment of the stopper cap, the fitting groove has a sealing groove portion that fits into the tip portion of the mouth portion without the screw portion, and the sealing groove portion is provided vertically from the outer peripheral side of the lower portion of the base wall. A configuration characterized by being formed by an inner peripheral surface of a reduced diameter vertical wall that sandwiches the distal end portion, an outer peripheral surface of the inner cylinder, and a lower surface of the base wall that contacts the top surface of the distal end surface of the mouth portion, and fitting A cap body having a tube portion, a pouring tube portion that forms a spout and guides the contents, and an upper lid that is connected to the cap body via a hinge, and the base wall is on the inner peripheral side And a lid engaging portion having a bulging portion that can be engaged with an annular engaging groove provided in the lower portion of the inner peripheral surface of the side peripheral wall of the upper lid. The structure is characterized in that it is a hinge cap, and a part of a predetermined range in the circumferential direction is excluded between the outer cylinder and the reduced diameter wall. A slit groove is drilled from above, and a predetermined range of slit grooves adjacent to the hinge-side end of the connecting portion, with the hinge at the substantially central position, is separated from the outer cylinder and the reduced diameter vertical wall at the groove bottom. The slit groove between the separation part and the end of the connecting part opposite to the hinge of the connecting part is a circumferential tear part connected by a thin part that can break the outer cylinder and the reduced diameter vertical wall at the groove bottom part And a longitudinal tear portion comprising a breakable thin portion formed by cutting out the outer cylinder in a radial direction is provided in a portion adjacent to the connecting portion of the separating portion. The structure is characterized in that the separation part is formed in an arc range of about 40 to 120 ° with a central angle of about 40 to 120 °, and the connection part is formed in an arc range of about 15 to 45 °. adopt.

The stopper cap of the present invention is provided with a centering surface in contact with the thread crest of the threaded portion provided on the outer periphery of the outer periphery of the outer cylindrical inner surface of the fitting cylindrical portion, A locking ridge protrudes through an annular recess that engages with a locking ring provided below the threaded portion of the mouth, and the diameter of the locking ridge is the same as the centering surface or from the centering surface Since it is large and smaller than the locking ring, it can be attached to a general-purpose beverage container having a threaded portion by plugging, the filling process becomes efficient, and a special mouth for plugging Since it is not necessary to prepare a container main body having a product, product management becomes easy and costs can be reduced.
In addition, a relatively long centering surface in contact with the screw thread is provided on the inner periphery of the outer cylinder that fits into the mouth portion, so that centering at the time of stoppering is reliably performed, and the stopper cap is inclined to the mouth portion. It is possible to prevent the occurrence of inconveniences.
Furthermore, a separation part is formed in which the outer cylinder and the reduced diameter vertical wall are separated at the slit groove bottom adjacent to the hinge side end of the connection part, and the separation part and the end of the connection part opposite the hinge In the middle, a circumferential tearing part is formed in which the outer cylinder and the reduced diameter wall are connected by a thin part that can be broken at the bottom of the slit groove, and the outer cylinder has a diameter adjacent to the connecting part of the separation part. In an embodiment in which a longitudinally tearable portion made of a breakable thin portion formed by cutting in a direction is provided, even a stopper cap having a relatively long outer cylinder fitted to a threaded portion is longitudinally separated by a separating portion. The tearing portion can be easily broken, and there is an effect that sorting and disposal can be easily performed.

It is side surface sectional drawing which shows the state with which the container main body of the stopper cap which is an Example of this invention was mounted | worn. It is a figure which shows the state just before plugging an Example stoppering cap into a container main body, (a) is side sectional drawing of a stoppering cap, (b) is a side view of the opening | mouth part of a container main body. It is a figure which shows the open state of an Example stopper cap, (a) is a top view, (b) is XX sectional drawing of a figure (a). (A) is a bottom view which shows the open state of an Example stopper cap, (b) is the YY line half sectional view of Fig.3 (a). 3B is an enlarged view of a main part in FIG. 3B, FIG. 3A is an enlarged view of a main part E, FIG. 3B is a main part F, and FIG. (A) is the enlarged view of the principal part H of Fig.3 (a), (b) is the ZZ sectional view taken on the line of Fig. (A). It is a top view which shows the state immediately after fracture | rupturing a longitudinal direction tearing part, in order to separate and discard an Example stopper cap after use of a container.

  Next, the stopper cap of this invention is demonstrated with reference to drawings which showed the Example.

1 to 6, A is a cap body, B is an upper lid integrally connected to the cap body A via a hinge C, and D is a container body.
As shown in FIGS. 1 and 2, the mouth portion 1 of the container body D is provided with a threaded portion 2 on the outer periphery in the same manner as a general-purpose beverage container, and below the threaded portion 2 is larger in diameter than the top of the screw thread. A locking ring 3 is formed, and a neck ring 4 is formed below the locking ring 3.

As shown in FIGS. 2 to 4, the cap main body A has a fitting cylinder portion 10 having a fitting groove 12 for fitting the mouth portion 1 of the container main body D, and a note that forms a spout to guide the contents. And a tube portion 11.
The fitting cylinder portion 10 includes an outer cylinder 13 provided on the outer peripheral side across the fitting groove 12, an inner cylinder 14 provided on the inner peripheral side, and the outer cylinder 13 and the inner cylinder at the upper part of the fitting groove 12. 14 and a base wall 15 that is connected to the hinge 14, and is connected to the hinge C at a predetermined location on the outer periphery of the upper end of the outer cylinder 13.
The base wall 15 is connected to the dispensing cylinder portion 11 on the inner peripheral side, and a lid engaging portion 18 having a bulging portion 17 that engages with the upper lid B when the lid is closed is provided upright.

A centering surface 20 is provided on the inner peripheral surface of the outer cylinder 13 so as to contact the top of the thread 2 of the screw portion 2 of the mouth portion 1, and the lower portion of the centering surface 20 is fitted to the locking ring 3 of the mouth portion 1. An annular recess 21 is formed, and further, a locking protrusion 22 protruding inward is continuous below.
The diameter of the locking projection 22 is the same as or larger than the diameter of the centering surface 20 and smaller than the diameter of the locking ring 3.
The annular recess 21 and the locking ridge 22 are provided with air vent grooves 23 in three circumferential directions in the axial direction. However, the air vent grooves 23 are not limited to three and can be provided in appropriate places. It is not necessary to provide it.
The upper portion of the fitting groove 12 includes an inner peripheral surface of a reduced diameter vertical wall 24 suspended from the outer peripheral side of the lower portion of the base wall 15 and an inner cylinder so as to sandwich the tip portion without the screw portion 2 in the mouth portion 1. A seal groove formed by the outer peripheral surface of 14 and the lower surface of the base wall 15 in contact with the top surface of the front end surface of the mouth portion 1 is formed to seal the inside of the container.

A slit groove 26 is formed between the outer cylinder 13 and the base wall 15, that is, between the outer cylinder 13 and the reduced diameter vertical wall 24 from above except for a connecting portion 25 in a predetermined range in the circumferential direction. ing.
As shown in detail in FIGS. 5 (a) and 5 (b), the slit groove 26 has a predetermined range with the hinge C adjacent to the connecting portion 25 as a substantially central position, and is contracted with the outer cylinder 13 at the groove bottom 27. Between the separation part 30 where the wall 24 is separated with a gap 28 and the end of the separation part 30 and the connection part 25 opposite to the hinge C, the outer cylinder 13 and the reduced diameter sag are formed at the groove bottom part 27. The wall 24 forms a circumferential tear portion 31 connected by a breakable transverse thin portion 29.

An outer notch portion 33 from the outer peripheral side of the outer cylinder 13 and an inner notch portion 34 from the inner peripheral side are formed in a radial direction at a portion adjacent to the connecting portion 25 in the separation portion 30 of the slit groove 26. Further, a longitudinal tearing portion 35 comprising a vertically thin thin portion 36 that can be broken is provided.
The vertical thin portion 36 includes a vertical portion 36 a extending in the axial direction from the groove bottom portion 27 of the slit groove 26, and a radial portion 36 b extending from the lower end portion of the vertical portion 36 a to the outer peripheral surface of the outer cylinder 13.
Further, in the present embodiment, the longitudinal tearing portion 35 coincides with the air vent groove 23 in the circumferential direction, and the inner notch portion 34 is formed as a part of the air vent groove 23 in the lower part.
The inner notch 34 may not be provided, and the vertical thin portion 36 may be formed by either the outer notch 33 or the inner notch 34.
Further, the inner notch 34 and the air vent groove 23 do not necessarily have to be formed at the same location.

In this embodiment, the longitudinal tearing portion 35 is provided at a circumferential position at a central angle of about 40 ° from the central portion of the hinge C. However, the longitudinal tearing portion 35 only needs to be within a range where it can be easily torn by pulling the upper lid B. What is necessary is just about 20-60 degrees from a center part.
Therefore, the central angle α of the arc range of the separating portion 30 is preferably about 40 to 120 ° with the hinge C as a substantially center.
Further, the connecting portion 25 can be easily pulled off the cap body A from the mouth portion 1 of the container body D by finally pulling the outer cylinder 13 and has strength for that purpose. The central angle β is preferably formed in an arc range of about 15 to 45 °.

The extraction cylinder part 11 is connected to the fitting cylinder part 10 on the inner peripheral side of the base wall 15 and is provided with an extraction cylinder 40 that guides the contents to be extracted.
In this embodiment, the lower part of the dispensing cylinder 40 is integrated with the inner cylinder 14 and is connected to the partition wall 41 that seals the inside of the container at the inner periphery of the lower end. It may be provided separately from the inner peripheral edge of the base wall 15.
In the partition wall 41, a removal portion 43 is defined by a thinned weakened portion 42 that can be broken, and the thinned weakened portion 42 is broken and removed to remove the removed portion 43, whereby the inside and outside of the container are circulated. A spout is formed.

As shown in FIG. 5C, the thinned weakened portion 42 is formed by being cut out from both the upper surface and the lower surface, and has a shape in which shearing force is easily applied and is easily broken.
A column 44 is erected on the hinge C side of the removal unit 43, and a pull ring 45 is continuously provided via the column 44.
On the opposite side of the pull ring 45 from the hinge C, a thin gripping piece 46 is provided at the bottom.
In addition, the removal cylinder 43 and the pull ring 45 etc. are not necessarily required for the extraction cylinder part 11, and the extraction cylinder 40 may be a chimney type injection nozzle with a small inner diameter.

The upper lid B includes a top wall 50 that forms the top surface and a side peripheral wall 51 that is suspended from the periphery of the top wall 50, and is connected to the hinge C at a predetermined location on the outer periphery of the lower end of the side peripheral wall 51.
On the lower inner peripheral surface of the side peripheral wall 51, there are provided an engaging groove 53 that fits into the bulging portion 17 of the lid engaging portion 18, and an engaging protrusion 54 that is reduced in diameter following the engaging groove 53. The engaging protrusion 54 engages with the bulging portion 17 and prevents the upper lid B from being opened.
Reinforcing ribs 55 are provided above the engaging grooves 53 on the inner peripheral surface of the side peripheral wall 51, and are separated from the engaging grooves 53 by a predetermined height on both sides excluding the hinge C side and the opposite side of the hinge C. The upper part is thinned from the above-mentioned position, and the inner thinning part 56 formed thinner than the other circumferential direction part is formed.

Further, on the side of the side peripheral wall 51 opposite to the hinge C, a predetermined range on the outer peripheral side is thinned to provide an outer thinned portion 57 that is thinner than other parts, and a knob 58 protrudes at the lower peripheral portion. It is installed.
A lower meat removal part 59 is also formed at the base of the knob 58, and when the knob 58 is lifted together with the outer meat extraction part 57, the knob 58 is deformed to give cushioning to the knob 58, thereby reducing the burden on the fingers.
A sealing cylinder 61 is vertically provided on the inner surface of the top wall 50, and a sealing protrusion 62 is provided on the outer periphery of the lower end of the sealing cylinder 61.
The stopper cap of the present embodiment is a hinge cap in which the upper lid B is connected to the cap main body A via the hinge C. However, the stopper cap of the present invention is not necessarily a hinge cap, and the lid body It may be a separate body from the cap body to be plugged.

Next, usage modes and operational effects of this embodiment will be described.
In order to attach the stopper cap of the present embodiment to the container body D, first, the upper lid B is rotated around the hinge C from the opened state immediately after being manufactured as shown in FIG. Covering and pressing from above, the engaging protrusion 54 gets over the bulging portion 17 and engages, thereby closing the stopper cap.
After that, as shown in FIG. 2, the inner periphery of the outer cylinder 13 of the stopper cap is fitted into the mouth portion 1 of the container body D and inserted.

At this time, since the centering surface 20 is fitted into the mouth 1 while the centering surface 20 is in contact with the top of the screw thread of the screw portion 2, the centering surface 20 having a relatively long contact area performs a centering function. The locking protrusion 22 is brought into contact with the locking ring 3 and stopped without being inclined with respect to 1.
In this state, when the top wall 50 is pressed strongly and plugged, the locking ridge 22 gets over the locking ring 3, the locking ring 3 is fitted into the annular recess 21, and the lower part is the locking ridge 22. The stopper cap is firmly attached to the container body D.

Since the annular recess 21 and the locking protrusion 22 are provided with an air vent groove 23, air resistance is not generated when the stopper cap is fitted into the mouth portion 1, and at the time of stoppering. The lower portion of the outer cylinder 13 can be easily expanded in diameter and can be fitted with a relatively small plugging force.
The distal end side of the mouth portion 1 to which the stopper cap is attached is fitted into the fitting groove 12, and the distal end of the mouth portion 1 without the screw portion 2 is provided with a reduced diameter depending on the outer peripheral side of the lower portion of the base wall 15. The inside of the container is sealed by being sandwiched between the inner peripheral surface of the wall 24 and the outer peripheral surface of the inner cylinder 14.

In order to use the container equipped with the stopper cap of the present embodiment, when the knob 58 of the upper lid B is lifted and opened, and the pull ring 45 is gripped and lifted, the thinned weakened portion 42 near the column 44 is broken. Beginning, when the thinned portion 42 is completely broken, the removal portion 43 is separated from the partition wall 41, and the opening forms a spout.
At this time, since a thin gripping piece 46 is provided on the lower side of the pull ring 45 opposite to the hinge C, the gripping piece 46 acts as a cushion when gripped with a finger to prevent the finger from becoming painful. Can do.

The upper lid B is provided with an outer thinning portion 57 and a lower thinning portion 59, so that it is easy to deform when the knob 58 is pulled up, and the knob 58 is cushioned to give a burden on the fingers. There is no such thing as reducing your fingertips.
Furthermore, since the inner thinned portion 56 is formed on both sides together with the outer thinned portion 57 and the lower thinned portion 59, the weight can be reduced and the material cost can be kept low.
Further, since the thinned portion 42 of the present embodiment is formed by cutting out from both the upper surface and the lower surface of the partition wall 41, the shearing force tends to concentrate on the connecting portion of the thin wall weakened portion 42 with the partition wall 41, Easily breaks with little force.

If the container with an open outlet is tilted, the contents filled in the container can be guided to the extraction cylinder 40 through the outlet and can be poured out at a necessary location. Ideal as a container.
After use, if the upper lid B is rotated and the bulging portion 17 is fitted into the engagement groove 53, the lid is closed again. At this time, the seal protrusion 62 of the sealing cylinder 61 is in the inner periphery of the dispensing cylinder 40. The container is sealed by contacting the surface.

The stopper cap of the present embodiment can be separated from the container body D and discarded after the container is used.
In the container that has been used, when the stopper cap is opened and the upper lid B is pulled outward, the outer cylinder 13 on the hinge C side is pulled, and the longitudinal portion 36a of the longitudinal tearing portion 35 is broken from above. start.
At this time, in the separation portion 30 formed in the arc range of the central angle α on the hinge C side, a gap 28 is formed in the groove bottom portion 27 of the slit groove 26, and the outer cylinder 13 is separated from the reduced diameter vertical wall 24 of the base wall 15. Therefore, the vertical portion 36a is easily torn while the upper lid B is moved away from the cap body A.

When the vertical portion 36a is broken to the lower end of the outer cylinder 13, the radial portion 36b is further torn in the radial direction, and finally the vertical tear portion 35 is completely broken to correspond to the separation portion 30 of the outer cylinder 13. The portion to be extended extends outward, and the upper lid B further moves away from the cap body A (see FIG. 7).
The upper lid B away from the cap body A is easily pulled, and starts to tear the lateral thin portion 29 of the circumferential tear portion 31 adjacent to the separation portion 30.
When the lateral thin portion 29 breaks and completely breaks, the upper lid B moves far away from the cap body A, and the outer cylinder 13 is connected to the base wall 15 only by the connecting portion 25.

If the upper lid B is further pulled from this state, the engagement between the locking protrusion 22 and the locking ring 3 is easily released, and the cap body A can be removed from the container body D.
Thus, in the stopper cap of the present embodiment, the separation portion 30 where the outer cylinder 13 and the base wall 15 are separated is provided adjacent to the longitudinal tearing portion 35 over a predetermined arc range. The longitudinal tearing portion 35 of the relatively long outer cylinder 13 that fits in 2 can be easily broken, and the circumferential tearing portion 31 can be broken by pulling the upper lid B away from the cap body A. Since it can be started easily, separation and disposal can be easily performed.

Since the stopper cap of the present embodiment can be attached to the mouth portion 1 of a general-purpose beverage container having a threaded portion 2 by a stopper, the filling process becomes efficient and is special for the stopper cap. Therefore, it is not necessary to prepare a container body having a simple mouth portion, and product management becomes easy and costs can be reduced.
Further, by providing a relatively long centering surface 20 in contact with the thread of the threaded portion 2 on the inner periphery of the outer cylinder 13, the centering at the time of stoppering is reliably performed, and the stoppering cap is inclined to the mouth. It is possible to prevent the occurrence of inconveniences.
Furthermore, since the separating part 30 is provided adjacent to the longitudinal tearing part 35 and the circumferential tearing part 31 is provided subsequent to the separating part 30, the waste disposal can be performed even with a stopper cap having a relatively long outer cylinder 13. It can be done easily.

  The stopper cap of the present embodiment can be opened and closed with one hand, and since the content liquid can be accurately poured into the object by the dispensing cylinder, it is suitable for application to food containers such as seasonings.

A Cap body B Upper lid C Hinge D Container body 1 Mouth part 2 Screw part 3 Locking ring 4 Neck ring 10 Fitting cylinder part 11 Extraction cylinder part 12 Fitting groove 13 Outer cylinder 14 Inner cylinder 15 Base wall 17 Swelling part 18 Lid engaging part 20 Centering surface 21 Annular recess 22 Locking ridge 23 Air vent groove 24 Reduced diameter vertical wall 25 Connection part 26 Slit groove 27 Groove bottom part 28 Gap 29 Horizontal thin part 30 Separating part 31 Circumferential tear part 33 Outside Notch 34 Inner Notch 35 Longitudinal Tear 36 Vertical Thin Wall 40 Extraction Tube 41 Bulkhead 42 Thin Wall Weaker 43 Removal 44 Strut 45 Pull Ring 46 Grip 50 Top Wall 51 Side Wall 53 Engaging Groove 54 Engagement Projection 55 Reinforcement rib 56 Inner meat removal part 57 Outer meat removal part 58 Knob 59 Lower meat removal part 61 Sealing cylinder 62 Seal protrusion

Claims (5)

Including a fitting tube portion having a fitting groove to be fitted to the mouth portion of the container body;
The fitting cylinder portion includes an outer cylinder on the outer circumference side with the fitting groove interposed therebetween, an inner cylinder on the inner circumference side, and a base wall that continuously connects the outer cylinder and the inner cylinder at the upper part of the fitting groove,
On the inner peripheral surface of the outer cylinder, there is provided a centering surface that is in contact with the top of the screw thread of the screw portion provided on the outer periphery of the mouth portion. A locking ridge that engages with the stop ring is projected,
The stopper cap characterized in that the diameter of the locking protrusion is the same as or larger than the centering surface and smaller than the locking ring. The fitting groove has a seal groove part that fits into the tip part of the mouth part without a thread part,
The seal groove portion is provided from the outer peripheral side of the lower portion of the base wall, and the inner peripheral surface of the reduced diameter vertical wall sandwiching the front end portion of the mouth portion, the outer peripheral surface of the inner cylinder, and the lower surface of the base wall that contacts the top surface of the front end surface The stopper cap according to claim 1, wherein the cap is formed by: A cap body comprising a fitting tube portion, a pouring tube portion that forms a spout and guides the contents, and an upper lid that is connected to the cap body via a hinge,
The base wall is connected to the extraction cylinder portion on the inner peripheral side, and the upper portion has a bulging portion that can be engaged with an annular engagement groove provided in the lower portion of the inner peripheral surface of the side peripheral wall of the upper lid. The stopper cap according to claim 1 or 2, wherein the cap is a hinge cap in which the engaging portion is erected.   Between the outer cylinder and the reduced diameter vertical wall, a slit groove is drilled from above except for a part of a predetermined range in the circumferential direction, and the hinge is substantially centered adjacent to the hinge side end of the connection part. The slit groove of a predetermined range to be positioned forms a separation part in which the outer cylinder and the reduced diameter vertical wall are separated at the groove bottom part, and the slit groove between the separation part and the end of the connecting part opposite to the hinge Forms a circumferential tearing part that is connected by a thin-walled part that can break the outer cylinder and the reduced-diameter wall at the bottom of the groove. 4. The stopper cap according to claim 3, further comprising a longitudinal tearing portion formed of a cutable thin-walled portion. The separation part is formed in an arc range having a central angle of about 40 to 120 ° with the hinge at the center,
5. The stopper cap according to claim 4, wherein the connecting portion is formed in an arc range of approximately 15 to 45 degrees.

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