JP2020070055A - Spigot cap - Google Patents

Abstract

To provide a spigot cap which can fit to a mouth outer periphery of a different shape when the mouth inner diameter of a container body is equal and prevent deformation of an outer cylinder of a cap body from affecting the fitting state of an upper lid when the cap is driven.SOLUTION: This spigot cap comprises: a cap body A that is driven in a mouth 1 of a container body D; and an upper lid B that is fitted to the cap body A so as to be opened/closed. The cap body A comprises a fitting cylindrical part 8 that fits to the mouth 1 of the container body D. The fitting cylindrical part 8 comprises an inner cylinder 15 that is inserted into the inner peripheral of the mouth 1, an upper wall 16 that is connected to the outside from the upper end of the inner cylinder 15 and that abuts against the upper end surface of the mouth 1, a lid engaging part 17 that is connected to the upper end of the upper wall 16 and engaged with the upper lid B, and an outer cylinder 18 that is drooped from the outer peripheral edge of the lid engaging part 17 and engaged with an engaging projection 2 of the outer periphery of the mouth 1. In the outer cylinder 18, the thickness t1 of an upper part is smaller than the thickness t2 of the inner cylinder 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cap that is plugged in a mouth of a container body, and more particularly to a cap that is capable of accommodating the outer circumference of a mouth of a container body having different shapes.

Conventionally, a cap having a spout for pouring out contents is attached to the mouth of a container body by stoppering.
As this type of cap, when fitted into the mouth of the container body, an inner cylinder that elastically reduces in diameter by press fitting into the mouth and an outer cylinder and inner cylinder that press-contact with the outer peripheral surface of the mouth A cap main body having a fitting portion formed of an upper wall portion integrally connected to the outer cylinder via the upper edge of the mouth portion, and a screwing portion formed on the upper portion of the upper wall portion, and a screwing portion of the cap main body There is known a device including an upper lid that is openably and closably screwed (for example, see Patent Document 1).
Also, as a container in which a plastic cap is attached to the mouth of the container body by tapping, a top surface portion that covers the opening end of the mouth portion and a cylindrical outer ring that is continuous substantially perpendicularly to the top surface portion. And a cap body having an inner ring portion, a tip portion including an open end, a support ring portion, and a locking ring portion formed between the tip portion and the support ring portion and bulging outward. It is also known in the related art that the locking ring portion is fitted between the mouth portion of the container body having, and the outer ring portion and the inner ring portion of the cap so that the container body is sealed by the cap body (for example, See Patent Document 2).

Japanese Patent Laid-Open No. 11-100053 JP-A-6-144453

However, in the plugging cap described in Patent Document 1, when the fitting portion of the cap body is squeezed into the mouth portion of the container body, the inner cylinder shrinks along the inner surface of the mouth portion due to elastic self-deformation. It is pressed in a diameter state, and the outer cylinder and the screwed part are slightly reduced in diameter as the inner cylinder is reduced in diameter, and the screwed part of the cap body and the upper lid are affected by this reduced diameter. However, there is a problem that the screwed state is loosened, and the pressure tight sealing between the lower edge of the upper lid and the upper surface of the upper wall of the cap body becomes insufficient.
Further, also in the stopper cap described in Patent Document 2, there is an overlap margin between the outer diameter of the inner ring portion (outer diameter of the flat cylindrical curved surface portion) before the stopper and the inner diameter of the mouth portion. Therefore, similarly to the stopper cap described in Patent Document 1, there is a problem associated with the diameter reduction of the inner ring portion.
Further, since the outer cylinder of the stopper cap described in Patent Documents 1 and 2 is designed according to the shape of the outer periphery of the mouth of the container body, the shape of the outer periphery of the mouth is different even if the inner diameter of the mouth of the container body is the same. When the container body is plugged, the mounting condition between the upper lid and the cap body changes, and there is a problem that the mounting condition is too weak or too strong.

  The present invention has an object to solve the above-mentioned problems, and if the inner diameter of the mouth of the container body is the same, it is possible to correspond to the outer circumference of the mouth of different shapes, and the deformation of the outer cylinder of the cap body when the stopper is capped It is an object of the present invention to provide a stopper cap that does not affect the mounting condition of the plug.

  In order to solve the above problems, the present invention provides a stopper cap, which includes, as a stopper cap, a cap body that is stoppered in a mouth of a container body, and an upper lid that is openably and closably attached to the cap body. The cap body includes a fitting cylinder part that fits into the mouth part of the container body, and the fitting cylinder part is provided continuously with the inner cylinder inserted into the inner circumference of the mouth part and from the upper end of the inner cylinder to the outside. An upper wall portion that abuts the upper end surface of the mouth portion, a lid engaging portion that is continuously provided on the upper end of the upper wall portion and that engages with the upper lid, and a vertically extending portion from the outer peripheral edge of the lid engaging portion, An outer cylinder that engages with the engagement ridge is provided, and the outer cylinder adopts a configuration characterized in that the thickness of the upper portion is smaller than the thickness of the inner cylinder.

  As a specific embodiment of the outer cylinder, the outer cylinder adopts a configuration characterized in that the thickness of the outer cylinder is substantially constant except for the upper portion.

  Furthermore, as a specific embodiment of the stopper cap, the fitting cylinder portion is configured to include an outer peripheral cylinder portion that is continuously provided on the outer periphery with a constant gap therebetween. A configuration is adopted in which a pouring tube is provided, which has a U-shaped vertical section extending from the inner circumference of the fitting tube portion.

  By adopting the above-described configuration, the stopper cap of the present invention suppresses the deformation of the inner cylinder by allowing the deformation of the outer cylinder at the time of stoppering the mouth of the container body, and the deformation of the cap body prevents the deformation of the cap body. It is possible to prevent the mounting condition from being affected, and if the inner diameter of the mouth portion of the container body is the same, it is possible to cope with the outer circumference of the mouth portion having a different shape.

It is a figure which shows the state which closed the hinge cap which is an Example of this invention, (a) is a side sectional drawing, (b) is a principal part enlarged view of (a). It is a figure which shows the state which opened the hinge cap which is an Example of this invention, (a) is a top view and (b) is a side sectional drawing. It is a figure explaining the fitting state of the hinge cap which is an example of the present invention, and the mouth of a container body, (a) is a side sectional view before plugging, and (b) is a principal part after plugging. FIG. It is a figure explaining the fitting state of the hinge cap which is an example of the present invention, and the mouth of the container body of another example, (a) is a side sectional view before stoppering, and (b) is stoppering. FIG.

Next, the stopper cap of the present invention will be described with reference to the drawings shown in the embodiments of the hinge cap.
In the following description, as viewed in FIG. 1A, the left direction is “front side (opposite side of hinge)”, the right direction is “rear side (hinge side)”, and the up direction is “up”. The direction is “down”.

In FIG. 1, A is a cap body that is plugged into the container body D, and B is an upper lid that is attached to the cap body A via a hinge C so as to be openable and closable.
An engagement ridge 2 is provided on the outer periphery of the mouth portion 1 of the container body D.

As shown in FIGS. 1 and 2, the cap body A has a fitting tubular portion 8 that fits into the mouth portion 1 of the container body D, and a longitudinal cut from the inner circumference of the fitting tubular portion 8 via the ring-shaped bottom wall 7. The surface of the spout 6 extends in a U shape, the partition wall 5 extends inward from the lower end of the inner circumference of the spout 6 and seals the mouth 1, and the outer periphery of the fitting cylinder 8. It is composed of an outer peripheral tube portion 9 which is continuously provided with a constant gap and which has an upper lid B continuously provided via a hinge C on the back side of the outer periphery of the upper end.
The dispensing cylinder 6 is a curved portion 6a that is curved outward in a trumpet shape toward the tip and is formed in a thin lip shape.

  The partition wall 5 is provided with a thin-wall weakening portion 11 for opening a spout when used, and a pull ring for pulling up and removing the removal portion 10 defined by the thin-wall weakening portion 11 on the upper surface of the partition wall 5. 12 are provided via columns 13.

The fitting tube portion 8 is provided upright from the outer peripheral edge of the ring-shaped bottom wall 7, and the outer periphery is inserted into the inner periphery of the mouth portion 1 of the container body D, and the inner peripheral edge of the lower surface at the upper end of the inner cylinder 15. And an annular upper wall portion 16 whose lower surface abuts on the upper end surface of the mouth portion 1, and an inner peripheral edge of the lower surface which is continuous with an outer peripheral edge of the upper surface of the upper wall portion 16 and whose upper portion engages with the upper lid B. The fitting portion 17 and the outer peripheral edge of the lid engaging portion 17 are vertically provided so as to be spaced apart from each other so as to form a space α between the outer peripheral surface of the upper wall portion 16 and the inner periphery thereof engages with the outer periphery of the mouth portion 1. In addition, the outer cylinder 18 is provided at the lower end of the outer circumference in which the outer cylinder portion 9 is continuously provided.
Further, in the fitting cylinder portion 8, a space β is formed between the outer circumference of the inner cylinder 15, the inner circumference of the outer cylinder 18, and the lower surface of the upper wall portion 16.
As shown in FIG. 1B, the wall thickness t1 of the connecting portion 18a connected to the lid engaging portion 17 on the upper portion of the outer cylinder 18 is equal to that of the inner cylinder 15 and the upper wall portion 16 (particularly with the lid engaging portion 17). The outer cylinder 18 is more easily deformed than the inner cylinder 15 because the outer cylinder 18 is thinner than the wall thickness t2 (of the continuous portion).
Further, the outer cylinder 18 is formed uniformly and deformable with a thickness t3 (> t1) as a whole except for the continuous portion 18a (thickness t1).
In this embodiment, LLDPE (linear low-density polyethylene) is used as the resin material of the hinge cap, and the container body D with the inner diameter d1 = 27.6 mm and the outer diameter d3 = 32 mm of the mouth portion 1 shown in FIG. In the case of a hinge cap that is stoppered, the wall thickness of each part of the fitting tubular portion 8 is
The thickness t1 of the continuous portion 18a of the outer cylinder 18 = 0.9 mm,
Wall thickness t2 of inner cylinder 15 = 1.2 mm,
The thickness t3 of the outer cylinder 18 other than the continuous portion 18a is 0.90 to 0.96 mm,
The ratio of wall thickness t2 to t1 is t1 / t2≈1.3, and it is desirable to set it in the range of 1.2 to 1.5.
Further, as the resin material, PP (polypropylene), PE (polyethylene) and the like can be used, but flexible LDPE (low density polyethylene) and LLDPE are preferable.

An annular bulging portion 19 protruding outward is provided on the upper portion of the lid engaging portion 17.
An engaging portion 20 that engages with the engaging protrusion 2 of the mouth portion 1 of the container body D is provided on the lower portion of the inner periphery of the outer cylinder 18.
By fitting the hinge cap to the mouth portion 1 of the container body D, the fitting cylinder portion 8 holds the mouth portion 1 between the outer periphery of the inner cylinder 15 and the inner periphery of the outer cylinder 18 in the space β, and The engagement ridge 2 and the locking portion 20 of the outer cylinder 18 engage with each other, and the cap body A is fitted into the mouth portion 1 of the container body D.

The fitting cylindrical portion 8 and the outer peripheral cylindrical portion 9 are provided with a separating mechanism for separating the hinge cap from the container body D and discarding the container after using the container.
As the separating mechanism, as shown in FIG. 2, the outer periphery of the lower end portion of the outer cylinder 18 and the inner periphery of the lower end portion of the outer peripheral cylinder portion 9 are provided at a position on the front side (opposite to the hinge C) over a predetermined arc range and cannot be broken. The connecting portion 21 and the fragile weakening portions 22 that are arranged at intervals in the arcuate range on the back surface side (the hinge C side) other than the arcuate range are continuously provided.

On the inner peripheral surface on the back side of the curved portion 6a of the dispensing cylinder 6, a locking tip surface 25 and a locking flat surface for locking with a locking recess 43 and a lower locking step 42 of a tongue piece 40 of an upper lid B described later. The part 26 is formed.
The locking flat portion 26 is formed to have a predetermined width in the circumferential direction centered on the hinge C, and has a flat surface that is cut away from the middle of the lip shape of the curved portion 6a so as to gradually increase in depth toward the distal end. The upper locking step portion 27 forms an arcuate wall surface that is substantially vertical from the upper edge.

The upper lid B includes a flat top wall 30, a side peripheral wall 31 that hangs from the peripheral edge of the top wall 30, and a sealed tube 32 that hangs from the inner surface of the top wall 30.
The outer peripheral edge of the lower end of the side peripheral wall 31 is connected to the hinge C, and a knob 33 is provided on the outer periphery of the lower end on the front side. The side peripheral wall 31 on the upper side of the knob 33 is the lower end of the other peripheral side peripheral walls 31. It is thinner than the part.
An annular locking groove 34 is provided near the lower end of the inner peripheral surface of the side peripheral wall 31 so as to fit the bulging portion 19 of the lid engaging portion 17 and maintain the closed state.

At the lower end of the sealing cylinder 32, an annular seal portion 35 is formed on the outer peripheral surface that abuts on the inner peripheral surface of the spout cylinder 6, and the content liquid attached to the inner surface of the upper lid B is discharged on the rear side half circumference. A tongue piece 40 is vertically installed so that the tongue piece 40 does not flow back to the spout of the tube 6 and droop around.
The tongue 40 has an arcuate cross section in the axial direction, and the outer peripheral surface of the tongue 40 slides along the inner peripheral surface on the hinge C side of the curved portion 6a of the spout barrel 6 when the upper lid B is opened and closed. The curved surface is thus formed.
A cut surface 41 having a chamfered outer peripheral surface is formed at a tip end portion of the tongue piece 40, and a lower locking step portion 42 is formed in which a substantially vertical wall surface is formed from the base side of the tongue piece 40 of the cut surface 41. At the bottom edge of the lower locking step portion 42, the locking recess 43 is a concave surface whose depth gradually decreases toward the base side of the tongue piece 40 so as to correspond to the tip of the curved portion 6a of the spout barrel 6. Are formed.
The cut surface 41 of the tongue piece 40, the lower locking step portion 42, and the locking recess 43 should engage with the locking flat portion 26, the upper locking step portion 27, and the locking tip surface 25 of the dispensing cylinder 6, respectively. Thus, the content liquid attached to the upper lid B is easily collected in the inner cylinder 15.

Next, the mode of use and operational effects of this embodiment will be described.
To attach the hinge cap of this embodiment to the container body D, first, the upper lid B is closed, and the mouth portion 1 of the container body D is applied to the space β of the fitting cylinder portion 8 and pressed from above. By stoppering, the locking portion 20 of the cap body A rides over the engaging protrusion 2 of the mouth portion 1, and the fitting cylinder portion 8 fits into the mouth portion 1.

When closing the upper lid B, first, the cut surface 41 of the tip portion of the tongue piece 40 rides on the locking tip surface 25 on the inner circumference of the curved portion 6a of the spout tube 6, and the lower locking step portion 42 engages. At the same time as overcoming the stop front surface 25 and engaging with the upper locking step portion 27, the locking front surface 25 is fitted into the locking recess 43 and the upper lid B is locked.
When a force is further applied from this state in the direction of closing the upper lid B, the locking tip surface 25 and the concave surface of the locking recess 43 are gently locked, so the locking state is quickly released with a small force, and the tongue The upper lid B rotates while sliding on the inner peripheral surface of the curved portion 6a, and the bulging portion 19 of the lid engaging portion 17 fits into the locking groove 34 of the upper lid B, so that the piece 40 closes. Is completed and the lid is closed.

In the hinge cap of the present embodiment, at the initial stage of stoppering, the inner peripheral surface is relatively flat as shown in FIG. 3 (Example of the mouth portion 1 formed by injection molding. The mouth portion 1 is formed by injection molding. 4) and FIG. 4 (Example of the mouth portion 1 formed by extrusion blow molding (EBM). Since the mouth portion 1 is formed by extrusion blow molding, unevenness is generated on the inner peripheral surface). As shown, the container body (D in FIG. 3, Da in FIG. 4) has an inner diameter d1 of the mouth portion 1, an outer diameter d2 and an outer diameter d3 of the engaging protrusion 2, and an engaging protrusion from the upper end surface of the mouth portion 1. If the values of the height h to the lower end of the outer circumference of 2 are almost the same, the inner cylinder 15 of the cap body A is inserted into the inner circumference of the mouth portion 1, and the outer circumference of the mouth portion 1 contacts the lower portion of the inner circumference of the outer cylinder 18. The outer cylinder 18 is pushed and spread from below.
At that time, since the portion near the continuous portion 18a, which is the upper portion of the outer cylinder 18 formed to have the wall thickness t1, is easily deformed, the lower portion of the outer cylinder 18 spreads outward with the portion as a fulcrum. The rigidity of the outer cylinder 18 does not hinder the engagement of the stopper.

At the end of the stopper, the outer cylinder 18 can be deformed with a wall thickness t3, so that the inner circumference of the outer cylinder 18 clings to the outer circumference of the engaging projection 2 of the container body (D in FIG. 3, Da in FIG. 4). The outer cylinder 18 is mounted on the outer periphery of the upper portion of the mouth portion 1 while the outer peripheral lower portion of the engaging protrusion 2 and the upper inner peripheral portion of the locking portion 20 of the outer cylinder 18 are engaged with each other while deforming into close contact with each other. ..
Further, the shape of the outer peripheral upper portion of the engaging projection 2 of the container body (D in FIG. 3, Da in FIG. 4) slightly expands or contracts the space α formed between the outer peripheral surface of the upper wall portion 16 and the outer peripheral surface. Since the outer circumference of the other engaging projection 2 and the outer cylinder 18 that deforms so as to cling to it are closely fitted, the crimping force does not become weak.
Furthermore, since the inner cylinder 15 is erected from the outer peripheral edge of the ring-shaped bottom wall 7, even if the inner cylinder 15 is pushed inward by the interference with the inner periphery of the mouth portion 1, it is connected to the ring-shaped bottom wall 7. The upper portion of the inner cylinder 15 is slightly deformed inward with the fulcrum as a fulcrum, and the restoring force against the deformation causes a force of pressing the outer circumference of the inner cylinder 15 against the inner circumference of the mouth portion 1 to strengthen the crimping force.

As described above, the hinge cap of the present embodiment has the inner diameter d1 and the outer diameter d2 of the mouth portion 1 of the container body (D in FIG. 3 and Da in FIG. 4), the outer diameter d3 of the engaging protrusion 2, and the mouth. As long as the height h from the upper end surface of the portion 1 to the lower portion of the outer periphery of the engaging projection 2 is substantially the same, it can be attached to any mouth portion having an outer peripheral shape.
Further, although the outer cylinder 18 is deformed by the shape of the outer peripheral surface of the engaging projection 2 of the mouth portion 1, the outer cylinder portion 9 is continuously provided outside the outer cylinder 18 and covers the outer cylinder portion 9. It is not affected by the shape of the hinge cap that can be seen from the outside.

To use the container equipped with the hinge cap, first, hook the knob 33 of the upper lid B with a finger and pull it up to release the fitting between the bulging portion 19 and the locking groove 34 and rotate the upper lid B. Then, the lower locking step portion 42 of the tongue piece 40 is engaged with the upper locking step portion 27 of the spout tube 6 and the locking tip surface 25 is fitted into the locking recess 43, so that the upper lid B is always kept. Lock at a certain opening.
In this state, the pull ring 12 is pulled up, the thin-walled weakened portion 11 is broken, the removed portion 10 of the partition wall 5 is cut off, and the spout is opened.

Since the upper lid B is locked at a predetermined opening, if the container is tilted as it is, the content liquid in the container is guided from the pouring outlet to the inner peripheral surface of the pouring tube 6 and is poured out. There is no need to touch the upper lid B without disturbing the pouring and disturbing the pouring or getting dirty with the content liquid.
In the hinge cap of the present embodiment, the tongue piece 40 is vertically provided so that the content liquid attached to the inner surface of the upper lid B flows back to the spout of the spout tube 6 and does not drip to the periphery. A normal hinge cap without 40 may be used.
Further, in this embodiment, the hinge cap is exemplified as the stopper cap, but it may be fitted or screwed to the cap body by a separate upper lid having no hinge.

Next, a separation procedure for removing the hinge cap from the container body D and discarding the container after use of the container will be described.
First, the upper lid B is pulled up to release the engagement between the upper locking step portion 27 and the lower locking step portion 42, and the upper lid B is further rotated to bring the lid into the open state shown in FIG.
After that, when the upper lid B is grasped and pulled upward, the outer peripheral tubular portion 9 is pulled in the radial direction via the hinge C, is broken from the weakened portion 22 on the hinge C side, and is pulled from the outer cylinder 18 to the outer peripheral tubular portion 9. Are separated, and finally reach the connecting portion 21.

  Further, when the upper lid B is pulled up, only the opposite side of the hinge C of the outer cylinder 18 is pulled through the connecting portion 21, and the outer cylinder 18 and the container body D are disengaged, and the container body is easily The hinge cap can be separated from D and discarded.

  The stopper cap of the present invention suppresses the deformation of the inner cylinder by allowing the deformation of the outer cylinder when capping the mouth of the container body, and the deformation of the cap body does not affect the mounting condition of the upper lid. In particular, it can be suitably used as a cap for a container having a shape in which the outer periphery of the mouth of the container body is different.

A cap body B upper lid C hinge D, Da container body α, β space d1 inner diameter d2, d3 outer diameter h height t1, t2, t3 wall thickness 1 mouth 2 engagement protrusion 5 partition wall 6 pouring tube 6a curved portion 7 Ring-shaped bottom wall 8 Fitting cylinder part 9 Outer peripheral cylinder part 10 Removal part 11 Thinning weakening part 12 Pull ring 13 Strut 15 Inner cylinder 16 Upper wall part 17 Lid engaging part 18 Outer cylinder 18a Connecting part 19 Bulging part 20 Engagement Stop portion 21 Connecting portion 22 Weakened portion 25 Locking tip surface 26 Locking flat portion 27 Upper locking step portion 30 Top wall 31 Side peripheral wall 32 Sealing cylinder 33 Pick 34 Locking groove 35 Sealing portion 40 Tongue piece 41 Cut surface 42 Lower Lock step 43 Lock recess

Claims (4)

A cap cap comprising a cap main body that is capped at the mouth of the container main body and an upper lid that is openably and closably attached to the cap main body,
The cap body includes a fitting cylinder portion that fits into the mouth portion of the container body,
The fitting cylinder portion is continuously provided with an inner cylinder inserted into the inner circumference of the mouth portion, from the upper end of the inner cylinder to the outside, and with the upper wall portion abutting the upper end surface of the mouth portion and the upper end of the upper wall portion. And a lid engaging portion that engages with the upper lid, and an outer cylinder that hangs down from the outer peripheral edge of the lid engaging portion and that engages with the engaging protrusion on the outer periphery of the mouth portion,
The outer cylinder is a stopper cap, wherein the upper wall is thinner than the inner cylinder.   The stopper cap according to claim 1, wherein the outer cylinder has a substantially constant wall thickness other than the upper portion.   The capping cap according to claim 1 or 2, wherein the fitting tubular portion includes an outer circumferential tubular portion that is continuously provided on the outer periphery with a constant gap.   The cap body according to any one of claims 1 to 3, wherein the cap main body includes a spouting tube whose longitudinal section extends in a U shape from the inner circumference of the fitting tubular portion.

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