JP2020164201A - cap - Google Patents

Abstract

To provide a cap in which sealability of a content is unlikely to deteriorate.SOLUTION: A cap of the invention includes: a cap body 11 which is attached to a mouth part W1 of a container body W and has a top wall part 12 provided with an outlet port 17 of a content of the container body W; a lid 13 which opens or closes the top wall part 12; and an inside plug 14 provided between the top wall part 12 and the lid 13. The lid 13 has: a lid body 31; and a depressing part 32 which is coupled to the lid body 31 so as to be displaceable downward. A fitting cylinder 37 which may fit in the inside plug 14 from above is provided on a lower surface of the depressing part 32. A gap is provided between the lid 13 and the inside plug 14. In a state that the depressing part 32 is displaced downward, the fitting cylinder 37 fits in the inside plug 14.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cap.

A cap having a lid and an inner plug connected to the cap body has been conventionally known. For example, in Patent Document 1 below, a lid body connected to a cap body via a hinge is provided, and the lid body includes a top wall portion, a side wall portion suspended from a peripheral portion of the top wall portion, and a top wall portion. A hinge cap having a tubular wall portion suspended on the inner surface of the cylinder wall portion and an inner plug held so as to be vertically movable inside the tubular wall portion is disclosed.

Japanese Unexamined Patent Publication No. 2017-13830

However, in the case of the cap of Patent Document 1, when an impact is applied to the lid body, for example, when the container is dropped, the impact applied to the lid body is easily transmitted to the inner plug. As a result, the inner plug may move in the direction of rising from the cap body, which may reduce the sealing property of the contents.

One aspect of the present invention has been made to solve the above problems, and an object of the present invention is to provide a cap in which the sealing property of the contents is less likely to be deteriorated even when an impact is applied to the lid. It is one of.

In order to achieve the above object, the cap of one aspect of the present invention is attached to the mouth of the container body and has a top wall portion provided with a pouring hole for the contents of the container body. A lid body for opening and closing the top wall portion and an inner plug provided between the top wall portion and the lid body are provided, and the lid body is provided with respect to the lid body body and the lid body body. A fitting cylinder having a pressing portion that can be displaced downward and being able to be fitted to the inner plug from above is provided on the lower surface of the pressing portion, and the lid body and the inner portion thereof. The fitting cylinder fits into the inner plug in a state where a gap is provided between the plug and the pressing portion and the pressing portion is displaced downward.

According to the cap of one aspect of the present invention, since a gap is provided between the lid body and the inner plug, even if an impact is applied to the lid body, the impact is not easily transmitted to the inner plug. Therefore, it is difficult for the inner plug to move in the direction of rising from the cap body, and there is little possibility that the sealing property of the contents is deteriorated. Further, since the fitting cylinder is fitted to the inner plug with the pressing portion displaced downward, the inner plug moves together with the lid when the operation of opening the lid is performed. Therefore, the injection hole can be opened without performing the operation of opening the inner plug.

In the cap according to one aspect of the present invention, the pressing portion is provided at a position radially facing the fitting cylinder on the lower surface of the pressing portion, and the pressing portion is placed on the inner plug in a state of being displaced downward. The fitting cylinder and the contact cylinder may sandwich the inner plug in a state where the contact cylinder is provided and the pressing portion is displaced downward.

According to this configuration, since the fitting cylinder and the contact cylinder sandwich the inner plug when the pressing portion is displaced downward, the lid body can stably hold the inner plug, and the inner plug can hold the lid. There is little risk of falling from the body. In addition, since the inner plug is securely held by the lid, it is possible to prevent the inner plug from remaining in the injection hole.

In the cap of one aspect of the present invention, the inner plug may be provided at a position corresponding to the injection hole and may have a pressure relaxation portion for relaxing the pressure on the inner plug.

According to this configuration, since the inner plug has a pressure relaxation portion, even if the pressure of the contents is applied to the inner plug, the pressure is relaxed by the pressure relaxation portion. As a result, the possibility that the inner plug is lifted is reduced, and the sealing property of the contents can be ensured.

In the cap of one aspect of the present invention, the lid body may be connected to the cap body via a hinge portion.

According to this configuration, since the lid body is connected to the cap body via a hinge portion, the lid body can be easily opened and closed. Further, when the lid body, the cap body, and the hinge portion are integrally formed, the number of parts can be reduced.

According to one aspect of the present invention, it is possible to provide a cap in which the sealing property is less likely to deteriorate even when an impact is applied to the lid body.

It is a vertical sectional view of the cap of one Embodiment of this invention. It is a figure which shows the state which the pressing part of the cap shown in FIG. 1 is pushed down.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the cap 1 of the present embodiment opens and closes the eclipsed tubular cap body 11 attached to the mouth portion W1 of the container body W and the top wall portion 12 of the cap body 11. It includes a lid 13 and an inner plug 14 provided between the top wall portion 12 and the lid 13.

In the illustrated example, the lid body 13 is formed in a humpback tubular shape, the inner plug 14 is formed in a tubular shape, and the lid body 13, the inner plug 14, and the cap body 11 are arranged coaxially with the common shaft. ing. Hereinafter, this common shaft is referred to as a cap shaft O, which is a direction along the cap shaft O, the top wall portion 15 side of the lid body 13 is referred to as an upper side, and the open end side of the peripheral wall portion 16 of the cap body 11 is a lower side. That is. The direction that intersects the cap shaft O when viewed from the direction along the cap shaft O (vertical direction) is referred to as the radial direction, and the direction that orbits around the cap shaft O is referred to as the circumferential direction.

The cap main body 11 includes a top wall portion 12 and a peripheral wall portion 16 extending downward from the outer peripheral edge portion of the top wall portion 12.

The top wall portion 12 is provided with a pouring hole 17 for pouring the contents, a fixing cylinder 18 that surrounds the pouring hole 17 from the outside in the radial direction, and a fixing cylinder 18 that is provided inside the fixing cylinder 18 in the radial direction. A pouring cylinder 19 which is a pouring hole 17 is provided. The injection hole 17, the fixed cylinder 18, and the injection cylinder 19 are provided coaxially with the cap shaft O. The top wall portion 12 may not be provided with the injection cylinder 19 but may be provided with an injection hole 17.

The injection hole 17 is an opening that penetrates the top wall portion 12 in the vertical direction, and ejects the contents of the container body W. The dispensing cylinder 19 projects upward from the opening peripheral edge of the dispensing hole 17 on the upper surface of the top wall portion 12. The upper end portion of the dispensing cylinder 19 has a shape curved outward in the radial direction with respect to the lower end portion of the dispensing cylinder 19.

The fixed cylinder 18 projects upward from the outer peripheral edge of the upper surface of the top wall portion 12. The fixed cylinder 18 extends continuously over the entire circumferential direction. The upper end of the fixed cylinder 18 is located below the upper end of the pouring cylinder 19. The upper end portion of the fixed cylinder 18 has a shape curved outward in the radial direction with respect to the lower end portion of the fixed cylinder 18. An outer locking protrusion 18a protruding outward in the radial direction is formed at the upper end of the fixed cylinder 18.

On the lower surface of the top wall portion 12, a container fitting cylinder 21 extending downward and being fitted in the mouth portion W1 is formed. The container fitting cylinder 21 is provided coaxially with the cap shaft O. The container fitting cylinder 21 is provided at a position on the lower surface of the top wall portion 12 in the radial direction from the position where the fixed cylinder 18 is provided.

The annular groove 23 is composed of a space surrounded by the lower surface of the top wall portion 12, the outer peripheral surface of the container fitting cylinder 21, and the inner peripheral surface of the peripheral wall portion 16. The annular groove 23 opens downward, extends continuously over the entire circumferential direction, and is provided coaxially with the cap shaft O. In the state where the cap 1 is attached to the container body W, the mouth portion W1 of the container body W is tightly fitted inside the annular groove 23.

The container fitting cylinder 21 seals the inside of the mouth portion W1 in a state where the upper end opening edge of the mouth portion W1 is in contact with the lower surface of the top wall portion 12. An undercut protrusion 16a that undercuts and fits into the container locking protrusion W2 formed on the outer peripheral surface of the mouth portion W1 is formed on the inner peripheral surface of the peripheral wall portion 16. The cap body 11 may adopt a configuration in which the cap body 11 is screwed to the mouth portion W1 and the screw portion.

An annular outer peripheral portion 25, an annular inner peripheral portion 26, and a step portion 27 are provided on the upper surface of the top wall portion 12. A fixing cylinder 18 is provided on the outer peripheral edge of the upper surface of the outer peripheral portion 25. A container fitting cylinder 21 is provided at a position on the lower surface of the outer peripheral portion 25 in the radial direction with respect to the fixed cylinder 18. The inner peripheral portion 26 is provided inside and above the outer peripheral portion 25 in the radial direction. A pouring cylinder 19 is provided on the inner peripheral edge of the upper surface of the inner peripheral portion 26.

The step portion 27 connects the outer peripheral portion 25 and the inner peripheral portion 26, and faces outward in the radial direction. A ridge portion 27a is formed on the upper portion of the step portion 27 so as to project outward in the radial direction and continuously extend over the entire circumferential direction. The ridge portion 27a is detachably fitted to the lower end portion of the fitting cylinder 40 described later of the inner plug 14.

The lid 13 is connected to the peripheral wall portion 16 of the cap body 11 via a hinge portion 29. The lid body 13, the cap body 11, and the hinge portion 29 are integrally formed.

The lid body 13 includes a lid body 31 that covers the top wall portion 12 and the inner plug 14 of the cap body 11, a pressing portion 32 that is displaceably connected to the lid body 31, and a lid body 31. It has a connecting portion 33 that connects the pressing portion 32 and the pressing portion 32.

The peripheral wall portion 34 of the lid body 31 is detachably fitted to the fixed cylinder 18. An undercut protrusion 34a that undercuts and fits into the outer locking protrusion 18a of the fixed cylinder 18 is formed on the inner peripheral surface of the peripheral wall portion 34. At the lower end of the peripheral wall portion 34, an operation projecting piece 35 projecting outward in the radial direction is provided at a portion located on the opposite side of the hinge portion 29 that sandwiches the cap shaft O in the radial direction.

The pressing portion 32 is connected to the top wall portion 15 of the lid body 31 via the connecting portion 33. The lid body 31, the connecting portion 33, and the pressing portion 32 are integrally formed. The connecting portion 33 is formed to be thinner than the lid body 31 and the pressing portion 32. Therefore, the connecting portion 33 can be easily displaced with the end on the side connected to the top wall portion 15 as a fulcrum. Further, the end portion on the side connected to the pressing portion 32 is provided at a position higher than the end portion on the side connected to the top wall portion 15. As a result, the pressing portion 32 can be displaced downward with respect to the lid body 31.

The pressing portion 32 has a disk-like shape in which the central portion close to the cap shaft O is recessed with respect to the peripheral edge portion. On the lower surface of the pressing portion 32, a fitting cylinder 37 that can be fitted to the inner plug 14 from above with the pressing portion 32 displaced downward, and an inner plug 14 with the pressing portion 32 displaced downward. A contact cylinder 38 that comes into contact with the vehicle is provided. The contact cylinder 38 is provided at a position radially inside the fitting cylinder 37 and facing the fitting cylinder 37 in the radial direction. The lower end of the contact cylinder 38 is located below the lower end of the fitting cylinder 37.

The inner plug 14 has a fitting cylinder 40 that is fitted and fixed to the cap main body 11, and a sealing cylinder 41 that covers and seals the injection hole 17 from above.

The fitting cylinder 40 is fitted to the top wall portion 12 of the cap body 11. An undercut protrusion 40a for undercut fitting to the protrusion 27a of the step portion 27 of the top wall portion 12 is provided on the inner peripheral surface of the lower end of the fitting cylinder 40. The upper end of the fitting cylinder 40 has an inclined surface 40b that protrudes upward from the top plate 43 of the sealing cylinder 41 and is inclined downward from the inside to the outside in the radial direction. At the lower end of the inclined surface 40b, a fitting protrusion 40c that protrudes outward in the radial direction is provided.

At the lower end of the fitting cylinder 37 of the pressing portion 32, an undercut protrusion 37a that projects inward in the radial direction and undercut fits into the fitting protrusion 40c of the inner plug 14 is provided. On the outer peripheral surface of the contact cylinder 38 of the pressing portion 32, a contact wall portion 45 that abuts on the upper surface of the top plate 43 of the inner plug 14 is provided with the pressing portion 32 displaced downward. Further, the contact wall portion 45 does not necessarily have to be continuous in the circumferential direction, and may have a structure in which a part in the circumferential direction is interrupted.

The sealing cylinder 41 is a pressure relaxation portion that connects the peripheral wall portion 47 that abuts on the dispensing cylinder 19 of the cap body 11, the bottom wall portion 48 that corresponds to the bottom of the sealing cylinder 41, and the peripheral wall portion 47 and the bottom wall portion 48. It has a 49 and an annular top plate 43 that connects the peripheral wall portion 47 and the fitting cylinder 40. The lower surface of the top plate 43 is in contact with the upper end of the dispensing cylinder 19.

The pressure relaxation portion 49 is integrally formed with the peripheral wall portion 47 and the bottom wall portion 48. Further, the pressure relaxation portion 49 is formed thin with respect to the peripheral wall portion 47 and the bottom wall portion 48, and has a wavy cross-sectional shape. As a result, the pressure relaxation portion 49 is deformed so that the bottom wall portion 48 can be displaced in the vertical direction along the cap axis O with respect to the peripheral wall portion 47. The pressure relaxation unit 49 is provided at a position corresponding to the injection hole 17, and relaxes the pressure on the inner plug 14. The pressure relaxation unit 49 can be elastically deformed and may be restored and displaced to its original position when no pressure is applied. Alternatively, the pressure relaxation unit 49 may not be elastically deformed and may remain deformed when no pressure is applied. Further, the pressure relaxation portion 49 may have a thin-walled shape at the center or the whole of the bottom wall portion 48, and the structure of the thin-walled portion is not limited.

When the container with the cap 1 having the above configuration is distributed, as shown in FIG. 1, the pressing portion 32 of the lid 13 is not pushed down and is not displaced downward. At this time, the fitting cylinder 37 of the pressing portion 32 and the fitting cylinder 40 of the inner plug 14 are at positions separated from each other. Further, the contact cylinder 38 of the pressing portion 32 and the sealing cylinder 41 of the inner plug 14 are located at positions separated from each other. That is, the lid body 13 and the inner plug 14 are not in contact with each other, and there is a gap between the lid body 13 and the inner plug 14.

On the other hand, when the user opens the container, as shown in FIG. 2, the pressing portion 32 of the lid 13 is pushed down downward. Here, as the connecting portion 33 connecting the pressing portion 32 and the lid body 31 is displaced, the pressing portion 32 is displaced downward by a distance Z. At this time, the undercut protrusion 37a of the fitting cylinder 37 of the pressing portion 32 goes over the fitting protrusion 40c of the inner plug 14 and advances downward to fit into the fitting protrusion 40c. At the same time, the contact cylinder 38 of the pressing portion 32 comes into contact with the inner peripheral surface of the sealing cylinder 41 of the inner plug 14 and is inserted into the sealing cylinder 41. As a result, the fitting cylinder 40 and the sealing cylinder 41 of the inner plug 14 are sandwiched from the outside and the inside in the radial direction by the fitting cylinder 37 and the contact cylinder 38 of the pressing portion 32.

The holding force for fitting the pressing portion 32 of the lid 13 and the inner plug 14 is designed to be stronger than the holding force for fitting the cap body 11 and the inner plug 14. Therefore, after the pressing portion 32 is once pushed down, the inner plug 14 is held by the pressing portion 32, that is, the lid body 13, and can be removed from the ejection cylinder 19 of the cap body 11.

As described above, in the cap 1 of the present embodiment, a gap is provided between the lid 13 and the inner plug 14 in a state where the pressing portion 32 of the lid 13 is not pushed down. Therefore, for example, a container. Even if an impact is applied to the lid 13 due to dropping or the like when the lid is distributed or unopened, the impact is less likely to be transmitted to the inner plug 14 as compared with the conventional cap in which the lid and the inner plug are in contact with each other. Therefore, according to the present embodiment, it is possible to provide the cap 1 in which the inner plug 14 is less likely to move in the direction of coming out of the cap body 11 and the sealing property of the contents is less likely to be deteriorated.

On the other hand, when the container is opened, when the user pushes down the pressing portion 32 of the lid body 13, the fitting cylinder 37 of the pressing portion 32 fits into the inner plug 14, so that the inner plug 14 is opened when the lid body 13 is opened. It moves with the lid 13. Therefore, after opening the container, the injection hole 17 can be opened without performing the operation of opening the inner plug 14.

In particular, in the case of the present embodiment, when the pressing portion 32 is pushed down, the fitting cylinder 37 and the contact cylinder 38 of the pressing portion 32 sandwich the fitting cylinder 40 and the sealing cylinder 41 of the inner plug 14. The inner plug 14 is securely held by the lid body 13, and the possibility that the inner plug 14 will fall off from the lid body 13 is reduced. Further, a contact wall portion 45 is provided on the outer peripheral surface of the contact cylinder 38 of the pressing portion 32, and the contact wall portion 45 abuts on the top plate 43 of the inner plug 14 in a state where the pressing portion 32 is pushed down. The stopper 14 is less likely to be held at an angle with respect to the lid 13, and the lid 13 can stably hold the inner plug 14.

In the case of the present embodiment, since the inner plug 14 has the pressure relaxation unit 49, even if the load or pressure of the contents is applied to the inner plug 14 due to, for example, an impact when the container is dropped, the pressure relaxation unit 49 Deformation absorbs and relieves loads and pressures. As a result, it is difficult for the inner plug 14 to move in the direction of coming out of the cap body 11, and the sealing property of the contents can be further improved.

In the case of the present embodiment, since the lid body 13 is connected to the cap body 11 via the hinge portion 29, the lid body 13 can be easily opened and closed. Further, since the lid body 13, the cap body 11, and the hinge portion 29 are integrally formed, the number of parts can be reduced.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit of the present invention.

For example, in the above embodiment, once the pressing portion 32 is pushed down, the connecting portion 33 is maintained in a downwardly displaced state even if the pushing force is not applied. On the other hand, the connecting portion 33 may be configured to be elastically deformable. In that case, when the pushing force is no longer applied, the contact cylinder 38 of the pressing portion 32 comes into contact with the peripheral wall portion 47 of the inner plug 14, and the sealing cylinder 41 is fitted in the injection hole 17. The pressing portion 32 may be restored and displaced to the position shown in FIG. 1 while maintaining the above position.

For example, in the above embodiment, as the cap 1, an example of a hinge cap in which the lid 13 is connected to the cap body 11 via the hinge portion 29 is shown, but the lid 13 is connected to the cap body 11 via the hinge portion 29. The lid body 13 may be detachably screwed to the cap body 11 without being connected to the cap body 11.

The pressing portion 32 does not necessarily have to have the contact cylinder 38 when the inner plug 14 can be stably held only by the fitting cylinder 37. Alternatively, the contact cylinder 38 may be configured not only to contact the inner plug 14 but also to fit with the inner plug 14 as in the fitting cylinder 37. Further, the contact cylinder 38 does not necessarily have to be continuous in the circumferential direction, and may have a structure in which a part in the circumferential direction is interrupted.

In the above embodiment, an example in which the lid body 31 and the pressing portion 32 are connected by a displaceable thin-walled connecting portion 33 is shown, but the pressing portion 32 is configured to be displaced downward with respect to the lid body 31. The lid body 31 and the pressing portion 32 do not necessarily have to be connected by the connecting portion 33. Further, the inner plug 14 does not necessarily have to have the pressure relaxation portion 49.

Although not shown, the peripheral wall portion 16 of the cap body 11 and the peripheral wall portion 34 and the top wall portion 15, the connecting portion 33, and the pressing portion 32 of the lid body 13 may be covered with a shrink film or the like. Further, a sheet, a sticker, a film or the like that protects only the pressing portion 32 and the connecting portion 33 may be attached to the top wall portion 15.

In addition, it is possible to replace the constituent elements in the above-described embodiment with well-known constituent elements as appropriate without departing from the spirit of the present invention.

1 Cap 11 Cap body 12 Top wall part 13 Lid body 14 Inner plug 17 Injection hole 29 Hinge part 31 Lid body body 32 Pressing part 37 Fitting cylinder 38 Contact cylinder 49 Pressure relaxation part W Container body W1 Mouth

Claims (4)

A cap body that is attached to the mouth of the container body and has a top wall portion provided with a hole for pouring out the contents of the container body.
A lid that opens and closes the top wall,
An inner plug provided between the top wall and the lid,
With
The lid body has a lid body body and a pressing portion that can be displaced downward with respect to the lid body body.
On the lower surface of the pressing portion, a fitting cylinder that can be fitted to the inner plug from above is provided.
A cap in which the fitting cylinder is fitted to the inner plug in a state where a gap is provided between the lid body and the inner plug and the pressing portion is displaced downward. The pressing portion is provided at a position radially opposed to the fitting cylinder on the lower surface of the pressing portion, and has a contact cylinder that abuts on the inner plug in a state where the pressing portion is displaced downward.
The cap according to claim 1, wherein the fitting cylinder and the contact cylinder sandwich the inner plug in a state where the pressing portion is displaced downward. The cap according to claim 1 or 2, wherein the inner plug is provided at a position corresponding to the injection hole and has a pressure relaxation portion for relaxing the pressure on the inner plug. The cap according to any one of claims 1 to 3, wherein the lid body is connected to the cap body via a hinge portion.

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