JP2021084666A - Container cap - Google Patents

Abstract

To provide a container cap that can be opened with a simple operation while ensuring hermeticity in an unused state.SOLUTION: A container cap 1 that can be attached to a container body 2, comprising; a spout 14a for pouring out a content from a storage space S, a cap body 10 attached to a mouth part 4, and an openable/closable lid body 50 covering the spout 14a. A stopper 15 connected to the peripheral edge of the spout 14a via a weakened part 16 blocks the spout 14a. The lid body 50 is provided with a lid opening 52a that penetrates a top wall 52. The stopper 15 has a partition wall part 17 connected to the weakened part 16, a standing part 18 erected above the partition wall part 17, and a projecting part 19 projecting outward in a radial direction at the upper part of the standing part 18 and engaging with the peripheral edge part of the lid opening 52a. The standing part 18 is provided with a shock absorbing part 20 capable of absorbing an axial impact force applied to the standing part 18 by elastic deformation.SELECTED DRAWING: Figure 1

Description

The present invention relates to a container cap that is attached to the mouth of a container body that houses the contents and allows the contents to be poured out.

As a container for storing liquids, powders, granules, etc. such as food seasonings, a container having a container body for storing the contents and a container cap having a spout for pouring out the contents is known. ing. For example, Patent Document 1 includes a cap body provided with a spout and an upper lid that can be opened and closed by screw engagement with the cap body, and the spout is for opening a sealing plug and a sealing plug. A cap provided with a pull ring is disclosed.

Japanese Patent No. 6319500

However, in the case of the cap described in Patent Document 1, it is necessary to pull the pull ring to remove the sealing plug after opening the upper lid, which is troublesome and difficult for a weak user to remove the sealing plug. There was room for improvement.

Therefore, an object of the present invention is to provide a container cap that can be opened by a simple operation while ensuring hermeticity in an unused state.

The present invention has been made to solve the above problems, and the container cap of the present invention is a container cap that can be attached to a container body having a storage space for contents.
A cap body having a spout for pouring out the contents from the storage space and attached to the mouth of the container body, and a cap body.
A lid that can be opened and closed to cover the spout is provided.
A plug connected to the peripheral edge of the spout via a weakened portion blocks the spout.
A lid opening that penetrates the top wall of the lid is provided at a position corresponding to the spout in the lid.
The plug body protrudes radially outward at the partition wall portion connected to the weakened portion, the erection portion erected above the partition wall portion, and the upper portion of the erection portion, and extends to the peripheral edge portion of the lid opening. With an engaging protrusion,
The erecting portion is characterized in that it is provided with a shock absorbing portion capable of absorbing an axial impact force applied to the erecting portion by elastically deforming.

In the container cap of the present invention, it is preferable that the shock absorbing portion is composed of a stepped annular thin-walled portion 20 provided in the middle portion in the height direction of the standing portion.

Further, in the container cap of the present invention, the erecting portion includes a lower cylinder portion 21 connected to the partition wall portion and an upper cylinder portion connected above the lower cylinder portion 21 via the annular thin wall portion 20. Has 22 and
The outer diameter of the upper cylinder portion 22 is preferably smaller than the inner diameter of the lower cylinder portion 21.

Further, in the container cap of the present invention, it is preferable that the annular thin-walled portion 20 extends perpendicularly to the central axis of the standing portion.

Further, in the container cap of the present invention, it is preferable that the lower surface of the partition wall portion is provided with an inclined portion inclined toward the lower end portion of the partition wall portion.

According to the present invention, it is possible to provide a container cap that can be opened by a simple operation while ensuring hermeticity in an unused state.

It is sectional drawing in the side view which shows the container in an unused state which attached the container cap which concerns on one Embodiment of this invention to the mouth part of the container body. FIG. 5 is a cross-sectional view showing an initial state before fitting the stopper body to the lid body in the container cap shown in FIG. 1. FIG. 5 is a cross-sectional view of the container cap shown in FIG. 1 in a side view showing a state in which the lid is attached to the cap body in order to fit the stopper to the lid. It is sectional drawing in the side view which shows the state which opened the lid body of the container cap shown in FIG. It is a bottom view of the container cap in the state shown in FIG. FIG. 5 is a cross-sectional view of the container cap shown in FIG. 1 in a side view showing a state in which the plug body is fitted to the lid body using a plug body forming jig.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which the container cap 1 according to the first embodiment of the present invention is attached to a container body 2 suitable for the container cap 1. The container cap 1 according to the present embodiment includes a cap body 10 and a lid 50. In the present specification, claims, abstract and drawings, the side where the lid 50 is located is the upper side (upper side in FIG. 1), and the side where the container body 2 is located is the lower side (lower side in FIG. 1). And.

The container body 2 includes a tubular mouth portion 4, a body portion (not shown) connected to the lower end portion of the mouth portion 4, and a bottom portion that closes the lower end portion of the body portion. The container body 2 is provided with a storage space S inside which the contents are stored. The container body 2 can be molded by, for example, extrusion blow molding using a tubular parison formed of a synthetic resin material, biaxial stretch blow molding using a bottomed tubular preform, or the like. , Not limited to this.

As shown in FIG. 1, on the outer peripheral surface of the mouth portion 4, an annular convex portion 4a for undercut engagement with the engaging convex wall 11a provided on the outer peripheral wall 11 of the cap body 10 described later is provided. Further, the seal wall 12 of the cap body 10 is fitted to the inner peripheral surface of the mouth portion 4.

The cap body 10 includes an outer peripheral wall 11 that surrounds the mouth portion 4. On the inner peripheral surface of the outer peripheral wall 11, an engaging convex wall 11a that undercuts and engages with the annular convex portion 4a of the mouth portion 4 is formed. Further, the top wall 13 is integrally connected to the upper part of the outer peripheral wall 11. Inside the outer peripheral wall 11 in the radial direction, the seal wall 12 hangs down from the lower surface of the top wall 13. The cap body 10 sandwiches the mouth portion 4 of the container body 2 between the outer peripheral wall 11 and the seal wall 12, and engages the annular convex portion 4a with the engaging convex wall 11a undercut. On the other hand, it is firmly held.

On the upper surface of the top wall 13, a pouring cylinder 14 forming a pouring outlet 14a for pouring out the contents is provided. An engaging protrusion 13a is provided at the outer peripheral end of the top wall 13, and when the lid 50 is closed, the lid protrusion 54 provided on the inner peripheral surface of the lid peripheral wall 51 of the lid 50 undercuts and engages with the lid. The body 50 is fixed to the cap body 10. In the present embodiment, the inside of the upper part of the pouring cylinder 14 is fitted to the outer peripheral surface of the inner cylinder 56 hanging from the lower surface of the top wall 52 of the lid 50, so that the pouring outlet 14a is formed when the lid 50 is closed. It is sealed liquidtightly.

A hinge portion 40 is provided in a part of the upper end portion of the outer peripheral wall 11 in the circumferential direction, and the lid body 50 is integrally connected to the cap body 10 so as to be openable and closable.

The upper end of the dispensing cylinder 14 is curved outward in the radial direction. Further, the pouring cylinder 14 has a height of a portion opposite to the hinge portion 40 (front side of the container cap 1) rather than a portion on the side where the hinge portion 40 is provided (rear side of the container cap 1). Is formed to be large.

On the inner surface of the injection cylinder 14, a plug 15 that closes the injection outlet 14a is connected via a weakening portion 16. As shown in FIG. 1, the plug 15 closes the spout 14a in the unused state of the container in which the weakened portion 16 is not broken. Then, by confirming whether or not the weakened portion 16 is broken, it is possible to determine whether or not the container to which the container cap 1 is attached is unopened. The weakened portion 16 has a cross-sectional area that can be easily broken by applying a predetermined force when the user opens the lid 50 of the container in an unused state.

As shown in FIG. 1, the plug body 15 includes a plate-shaped partition wall portion 17 connected to the weakening portion 16 and an erection portion 18 erected upward from the partition wall portion 17. The upright portion 18 has a ridged tubular shape, and includes a protruding portion 19 projecting outward in the radial direction at the upper portion. The plug 15 is firmly fixed to the lid 50 by undercutting the protruding portion 19 with the peripheral edge of the lid opening 52a on the lid 50 side, which will be described later.

In this example, the weakening portion 16 is arranged at the lower part of the dispensing cylinder 14. Thereby, the flow when the contents are poured out from the pouring cylinder 14 can be stabilized.

Further, the upright portion 18 is provided at a position eccentric to the front of the central axis O1 of the container cap 1. That is, the central axis O2 of the upright portion 18 is located on the front side of the central axis O1 of the container cap 1. As a result, when the cap is opened, the weakened portion 16 can be broken more smoothly starting from the front end of the weakened portion 16.

The erection portion 18 is provided with an impact absorbing portion capable of absorbing an axial force applied to the erection portion 18 by elastic deformation (direction along the central axis O2 of the erection portion 18). The shock absorbing portion of this example is composed of a stepped annular thin-walled portion 20 provided in the middle portion in the height direction (axial direction) of the vertical portion 18. In this example, one stepped annular thin-walled portion 20 is provided in the upright portion 18, but a plurality of stepped annular thin-walled portions 20 may be provided in the height direction of the upright portion 18. .. Further, the position of the annular thin-walled portion 20 in the height direction of the standing portion 18 can be changed as appropriate.

The upright portion 18 includes a lower cylinder portion 21 connected to the partition wall portion 17, an upper cylinder portion 22 located above the lower cylinder portion 21, and an annular thin-walled portion 20 connecting the lower cylinder portion 21 and the upper cylinder portion 22. Have. The lower cylinder portion 21 and the upper cylinder portion 22 are substantially cylindrical, and the outer diameter of the upper cylinder portion 22 (maximum diameter of the outer peripheral surface) is smaller than the inner diameter of the lower cylinder portion 21 (minimum diameter of the inner peripheral surface). ing. Further, the annular thin-walled portion 20 is an annular shape centered on the axis O2. The annular thin-walled portion 20 is formed to be thinner than the other portions (lower cylinder portion 21 and upper cylinder portion 22) in the upright portion 18. The erecting portion 18 may have, for example, a tubular shape having a cross section perpendicular to the axis O2 of a circle, an ellipse, a polygon, or the like, but is not limited thereto.

The annular thin-walled portion 20 elastically deforms in the axial direction of the erection portion 18 when an impact force in the direction in which the erection portion 18 compresses is applied, so that the shaft toward the lower cylinder portion 21 of the upper cylinder portion 22 Allows directional movement. That is, the vertical portion 18 expands and contracts in the axial direction (compressed in this case), so that the impact applied to the vertical portion 18 in the axial direction can be absorbed. Thereby, for example, when the top wall 52 of the lid 50 falls in an inverted posture facing downward and collides with the ground, the impact force in the axial direction applied to the standing portion 18 can be absorbed. By absorbing the impact force at the erection portion 18 in this way, the impact transmitted to the weakening portion 16 via the erection portion 18 can be reduced, so that the weakening portion 16 unintentionally breaks due to the impact at the time of dropping. It is possible to prevent this from happening. The annular thin-walled portion 20 that has been temporarily elastically deformed by the impact is automatically restored immediately after the deformation by the restoring force, and the standing portion 18 returns to its original shape.

On the lower surface of the partition wall portion 17 (the surface on the accommodation space S side), an inclined portion 17b inclined downward toward the lower end portion 17a of the partition wall portion 17 located on the central axis (axis O1) of the plug body 15 is provided. Has been done. By providing such an inclined portion 17b, the contents adhering to the lower surface of the partition wall portion 17 are guided by the inclined portion 17b and move to the lower end portion 17a side, and easily drop from the lower end portion 17a into the accommodation space S. ing. As a result, the contents adhering to the lower surface of the partition wall portion 17 can easily return to the accommodation space S.

From the viewpoint of smoothly returning the contents adhering to the lower surface of the partition wall portion 17 to the accommodation space S, the lower end portion 17a of the partition wall portion 17 may be located on the central axis (axis line O1) of the plug body 15. However, the present invention is not limited to this, and the lower end portion 17a may be located at a position away from the central axis (axis line O1) of the plug body 15.

The structure of the shock absorbing portion provided in the vertical portion 18 is not limited to the illustrated example as long as it can absorb the impact force in the axial direction by elastic deformation, and may be, for example, a bellows shape or the like.

As shown in FIG. 1, the lid 50 is connected to the upper end of the outer peripheral wall 11 of the cap body 10 via a hinge portion 40, and can cover the pouring cylinder 14 in the closed state. The lid 50 has a tubular lid peripheral wall 51 located above the outer peripheral wall 11 in a closed state, and a top wall 52 connected to the upper end of the lid peripheral wall 51. A knob portion 53 is provided on the outer peripheral surface of the front side portion of the lid peripheral wall 51, and a hinge portion 40 is provided on the rear side portion. Further, a lid protrusion 54 is provided on the inner surface of the lid peripheral wall 51. When the lid 50 is closed, the lid protrusion 54 undercuts and engages with the engaging protrusion 13a, and the lid 50 is fixed to the cap body 10.

A lid opening 52a penetrating the top wall 52 is provided at a position (horizontal direction) corresponding to the spout 14a in the lid 50. A protruding portion 19 projecting radially outward from the upper portion of the standing portion 18 is engaged and fixed to the annular protrusion 55 formed on the peripheral edge of the lid opening 52a. As shown in FIG. 1, the engagement between the annular protrusion 55 and the protrusion 19 is an engagement in which the contact surfaces thereof form a substantially horizontal plane, and a plug forming jig 60 (see FIG. 6) described later is used. After the plug 15 is formed so that the two engage with each other, the engagement becomes irreversible and strong. More specifically, the engagement between the annular protrusion 55 and the protrusion 19 cannot be released unless the standing portion 18 is pressed with a pressing force larger than the tensile force required to break the weakened portion 16. Has been done. The top wall 52 is provided with an inner cylinder 56 that hangs down from the top wall 52 on the radial outside of the lid opening 52a.

Next, a procedure for engaging the protruding portion 19 of the plug body 15 with the annular protrusion 55 of the lid body 50 to form the unused container cap 1 shown in FIG. 1 will be described.

FIG. 2 shows a container cap 1 in an initial state before engaging the stopper body 15 with the lid body 50, which is formed by injection molding or the like. In the container cap 1 in the initial state, the protruding portion 19 is not yet formed on the standing portion 18, and the upper end portion of the standing portion 18 has a substantially truncated cone shape as shown in FIGS. It is a wall forming material 23. By rotating the lid 50 forward with the hinge portion 40 as a fulcrum from the state shown in FIG. 2, the lid 50 is moved to a position covering the spout 14a as shown in FIGS. 3 and 4, and an upper wall is formed. After the upper part of the material 23 penetrates the lid opening 52a and protrudes upward, the container cap 1 is set in the plug forming jig 60 shown in FIG.

In a state where the upper cylinder portion 22 of the plug body 15 is supported by the lower jig 61 of the plug body forming jig 60, the upper wall forming material 23 of the erecting portion 18 is formed by the upper jig 62 of the plug body forming jig 60 shown in FIG. Weld by heating while pressing from above. The upper wall forming material 23 may be pressed by the upper jig 62 without heating. The pressed upper wall forming material 23 is deformed until it becomes substantially the same height as the upper surface of the top wall 52 of the lid 50 while being pushed outward in the radial direction to become the upper wall portion 24 shown in FIG. Further, the side portion of the upper wall forming member 23 is formed as a protruding portion 19 above the annular protrusion 55. As a result, the protruding portion 19 engages with the annular protrusion 55, and the plug 15 cannot pass through the lid opening 52a downward. In this example, a protrusion 57 is provided on a part (rear portion) of the upper surface of the annular protrusion 55 in the circumferential direction, and the protrusion 57 bites into the lower surface of the protrusion 19 to protrude from the annular protrusion 55. The bond strength with the portion 19 is increased.

Instead of pressing the upper wall forming material 23 with the upper jig 62, the upper wall forming material 23 is welded by heating and spread in the horizontal direction to form the upper wall portion 24 and the protruding portion 19. The stopper body 15 may be engaged with the lid body 50.

The cap body 15 is formed by the plug body forming jig 60 shown in FIG. 6 and fixed to the lid body 50, and then the cap body 10 is attached to the mouth 4 of the container body 2 filled with the contents. The unused container shown in 1 is completed.

When using the contents in the container body 2 for the first time, the user swings and opens the lid 50 with the hinge portion 40 as a fulcrum while pinching the knob 53 of the lid 50 with a finger from the state shown in FIG. .. At this time, since the plug body 15 is already firmly fixed to the lid body 50, the weakened portion connecting the plug body 15 and the dispensing cylinder 14 by the user opening the lid body 50 with a force equal to or higher than a predetermined value. 16 is cut, and the plug 15 is separated from the pouring cylinder 14 in a state of being integrated with the lid 50 (see FIGS. 4 and 5). As a result, the spout 14a is opened so that the user can use the contents. Therefore, it is possible to open the lid by a simple operation of picking and pulling up the lid 50 while ensuring the sealing property by the plug 15 in the unused state. It can be said that the operation of pulling up the lid 50 is easier for the user to operate than the operation of pulling the pull ring to open the lid with less load on the fingers.

As described above, the present embodiment is a container cap 1 that can be attached to the container body 2 having the storage space S for the contents, and has a spout 14a for pouring out the contents from the storage space S. A plug body 15 is provided with a cap body 10 attached to the mouth 4 of the container body 2 and a lid 50 that can be opened and closed to cover the spout 14a, and is connected to the peripheral edge of the spout 14a via a weakening portion 16. Is blocking the spout 14a, and a lid opening 52a penetrating the top wall 52 of the lid 50 is provided at a (horizontal) position corresponding to the spout 14a in the lid 50, and the plug 15 is a weakened portion. The partition wall portion 17 connected to the partition wall portion 17, the erection portion 18 erected above the partition wall portion 17, and the protrusion portion protruding outward in the radial direction at the upper portion of the erection portion 18 and engaging with the peripheral edge portion of the lid opening 52a. A shock absorbing portion (annular thin-walled portion 20) capable of absorbing an axial impact force applied to the standing portion 18 by elastically deforming the standing portion 18 is provided. did. By adopting such a configuration, in the unused container cap 1, the plug body 15 which is connected to the pouring cylinder 14 via the weakening portion 16 and closes the spout 14a is fixed to the lid body 50, and the lid body is fixed. By opening 50, the plug 15 can be moved together with the lid 50 to easily open the spout 14a. Therefore, it is possible to open the lid by a simple operation of opening the lid 50 while ensuring the sealing property by the plug 15 in the unused state. Then, the user can recognize that the container cap 1 is not unused only by confirming that the weakened portion 16 is broken. Therefore, it is possible to provide the container cap 1 with an unopened guarantee function with a simple configuration.

Further, in the present embodiment, by providing the shock absorbing portion (annular thin-walled portion 20) in the standing portion 18, the impact force when the container is dropped can be absorbed by the standing portion 18. As a result, the impact transmitted to the weakened portion 16 via the upright portion 18 can be reduced, so that it is possible to prevent the weakened portion 16 from being unintentionally broken by the impact at the time of dropping.

In the present embodiment, since the outer diameter of the upper cylinder portion 22 is smaller than the inner diameter of the lower cylinder portion 21, the upper cylinder portion 22 moves so as to enter the inside of the lower cylinder portion 21 at the time of shock absorption. Therefore, it is easier to absorb the impact.

Further, the annular thin-walled portion 20 of the present embodiment preferably extends perpendicular to the axis O2, and according to this, the upper cylinder portion 22 moves to both the upper and lower sides with respect to the lower cylinder portion 21. Since it becomes easy, it becomes easy to absorb the impact force on both sides of compression and tension in the axial direction. The annular thin-walled portion 20 is not limited to a shape perpendicular to the axis O2, and may be inclined with respect to the axis O2.

Further, in the present embodiment, the annular thin-walled portion 20 preferably has a flat plate shape perpendicular to the axis O2, and according to this, the shock absorbing portion can be provided while being able to exhibit a sufficient shock absorbing function. Molding can be facilitated as a simple structure. Further, the annular thin-walled portion 20 of the present embodiment has a flat plate shape as shown in FIG. 1, but is not limited to this, and may have a curved portion, a bent portion, or the like.

Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and modifications based on the present disclosure. Therefore, it should be noted that these modifications and modifications are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined or divided into one. It should be understood that these are also included in the scope of the present invention.

For example, in the above embodiment, the lid 50 is connected to the cap body 10 by the hinge portion 40, and the lid 50 is configured to be undercut engaged with the cap body 10, but the present invention is not limited to this embodiment. The lid 50 may be configured to be attached to the cap body 10 by, for example, screw engagement. In this case, it is preferable that the central axis O2 of the upright portion 18 and the central axis of the engaging screw (for example, the axis O1) substantially coincide with each other.

Further, in the above embodiment, the protruding portion 19 provided on the plug 15 is configured to engage with the annular protrusion 55 provided on the peripheral edge of the lid opening 52a, but the present invention is not limited to this embodiment. For example, the annular protrusion 55 may be undercut engaged with the protrusion 19, or the protrusion 19 of the plug 15 may be directly undercut to the peripheral edge of the lid opening 52a without providing the annular protrusion 55. It may be configured to fit.

1: Container cap 2: Container body 4: Mouth 4a: Circular protrusion 10: Cap body 11: Outer wall 11a: Engagement convex wall 12: Seal wall 13: Top wall 13a: Engagement protrusion 14: Injection cylinder 14a: Outlet 15: Plug 16: Weakened part 17: Bulk wall part 17a: Lower end part 17b: Inclined part 18: Standing part 19: Protruding part 20: Circular thin wall part (shock absorbing part)
21: Lower cylinder part 22: Upper cylinder part 23: Upper wall forming material 24: Upper wall part 40: Hinge part 50: Lid body 51: Lid body peripheral wall 52: Top wall 52a: Lid body opening 53: Picking part 54: Lid Body protrusion 55: Circular protrusion 56: Inner cylinder 57: Protrusion 60: Plug body forming jig 61: Lower jig 62: Upper jig O1: Axis line (center axis of cap)
O2: Axis (center axis of the vertical part)
S: Containment space

Claims (5)

A container cap that can be attached to the container body that has a storage space for the contents.
A cap body having a spout for pouring out the contents from the storage space and attached to the mouth of the container body, and a cap body.
A lid that can be opened and closed to cover the spout is provided.
A plug connected to the peripheral edge of the spout via a weakened portion blocks the spout.
A lid opening that penetrates the top wall of the lid is provided at a position corresponding to the spout in the lid.
The plug body protrudes radially outward at the partition wall portion connected to the weakened portion, the erection portion erected above the partition wall portion, and the upper portion of the erection portion, and extends to the peripheral edge portion of the lid opening. With an engaging protrusion,
The container cap is provided with a shock absorbing portion capable of absorbing an axial impact force applied to the standing portion by elastically deforming the standing portion. The container cap according to claim 1, wherein the shock absorbing portion is composed of a stepped annular thin-walled portion provided in an intermediate portion in the height direction of the standing portion. The erecting portion has a lower cylinder portion connected to the partition wall portion and an upper cylinder portion connected above the lower cylinder portion via the annular thin wall portion.
The container cap according to claim 2, wherein the outer diameter of the upper cylinder portion is smaller than the inner diameter of the lower cylinder portion. The container cap according to claim 2 or 3, wherein the annular thin-walled portion extends perpendicularly to the central axis of the standing portion. The container cap according to any one of claims 1 to 4, wherein an inclined portion inclined toward the lower end portion of the partition wall portion is provided on the lower surface of the partition wall portion.

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