JP2015151157A - cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap in which a tensile force required to break a breakage part is reduced when pulling out an operation part.SOLUTION: A cap body 4 comprises an extraction cylinder part 9 and a conical-shaped partition wall part 10 for closing the extraction cylinder part. The partition wall part 10 has a removal part 13 surrounded by a breakage part 12. An operation part 15 is provided in the removal part 13. By pulling the operation part 15 in an axial direction A of the extraction cylinder part 9, the breakage part 12 is broken, the removal part 13 is removed from the cap body 4, and an extraction hole is formed in the partition wall part 10. When a thin wall part 26 is formed at the outer side than the breakage part 12, and the operation part 15 is pulled in the axial direction A of the extraction cylinder part 9, the thin wall part 26 is deformed so that an angle C of an external face 26a of the thin wall part 26 with respect to a tension direction A of the operation part 15 comes close to a right angle from an obtuse angle.

Description

  The present invention relates to a cap attached to a mouth of a container.

  Conventionally, as this type of cap, for example, as shown in FIG. 10, there is a cap having a cap body 102 attached to the mouth of the container 101 and a lid 103 provided on the cap body 102 so as to be freely opened and closed. The cap main body 102 has a cylindrical pouring tube portion 104 and a partition wall portion 105 that closes the pouring tube portion 104.

  The partition wall portion 105 has a conical shape with the inner side (lower side) of the container 101 as the apex, and includes a rupture portion 106 formed in an annular shape and a removal portion 107 surrounded by the rupture portion 106. . The removal unit 107 is provided with a support column 108 and a pull ring 109. By pulling the pull ring 109 in the axial center direction A (upward direction) of the extraction tube portion 104, the fracture portion 106 is broken over the entire circumference, and the removal portion 107 is removed from the cap body 102, and the extraction hole is formed in the partition wall portion 105. 110 is formed.

  According to this, when opening the unused cap 111, the lid 103 is opened, and as shown in FIG. 11A, the finger is inserted into the pull ring 109 and pulled in the axial direction A (upward). The rupture portion 106 is ruptured over the entire circumference, and the removal portion 107 is removed from the cap body 102 as shown in FIG.

Since the partition wall portion 105 has a conical shape, a wide space is ensured between the pull ring 109 and the partition wall portion 105, and a finger can be easily inserted into the pull ring 109 when unplugged.
The cap as described above is described in, for example, Patent Document 1 below.

JP2011-201593

  However, in the above conventional type, when pulling out, when the pull ring 109 is pulled in the axial direction A (upward) with a tensile force F as shown in FIG. 11A, as shown in FIG. Where the tensile force F includes a first component force f1 having a component perpendicular to the outer surface 105a of the partition wall portion 105 and a second component force f2 having a component parallel to the outer surface 105a of the partition wall portion 105. The force is divided into two directions. Among these, the first component force f <b> 1 is a force that contributes to shearing the fracture portion 106.

  Here, since the partition wall 105 has a conical shape, as shown in FIG. 11A, the angle B of the outer surface 105a of the partition wall 105 with respect to the pulling direction A of the pull ring 109 becomes an obtuse angle (for example, 110 °). As a result, the first component force f1 becomes smaller than the tensile force F, and there is a problem that a large tensile force F is required to break the fractured portion 106 during unplugging.

  An object of the present invention is to provide a cap in which a tensile force required to break a fractured portion is reduced when the operation unit is pulled to be plugged.

In order to achieve the above object, the first invention has a cap body attached to the mouth of a container,
The cap body has a dispensing cylinder part and a partition part closing the dispensing cylinder part,
The partition wall has a rupture portion formed in an annular shape, and a removal portion surrounded by the rupture portion,
An operation unit is provided in the removal unit,
By pulling the operation part in the axial direction of the extraction cylinder part, the fracture part is broken and the removal part is removed from the cap body, and the extraction hole is formed in the partition part,
The partition wall has a conical shape with the inner side of the container as a vertex,
A deformed part is formed outside the fracture part of the partition part,
The deformation part is formed in a predetermined range in the circumferential direction from the mounting position of the operation part,
When the operating part is pulled in the axial direction of the dispensing cylinder part, the deforming part is deformed so that the angle of the outer surface of the deforming part with respect to the pulling direction of the operating part approaches from an obtuse angle to a right angle.

  According to this, by pulling the operating part in the axial direction of the extraction cylinder part, the deforming part is deformed, and the angle of the outer surface of the deforming part with respect to the pulling direction of the operating part approaches from an obtuse angle to a right angle. The rupture portion is ruptured, the removal portion is removed from the cap body, and an extraction hole is formed in the partition wall portion.

  At this time, as described above, since the angle of the outer surface of the deforming portion with respect to the pulling direction of the operating portion approaches a right angle, the tensile force applied to the operating portion acts substantially perpendicularly to the outer surface of the deforming portion. Thus, most of the tensile force applied to the operation portion is a force that contributes to shearing the fracture portion. Thereby, the tensile force required to break the fracture portion is reduced, and the removal portion can be easily removed from the cap body and unplugged.

In the cap according to the second invention, the deformed portion is a thin portion thinner than the thickness of the removal portion.
According to this, since a thin part is weak in intensity | strength, it is easy to deform | transform into the axial center direction of the extraction | pouring cylinder part. Therefore, by pulling the operating part in the axial direction of the dispensing cylinder part, the thin part deforms, and the angle of the outer surface of the thin part with respect to the pulling direction of the operating part approaches from an obtuse angle to a right angle. Is broken, the removal part is removed from the cap body, and a pouring hole is formed in the partition wall part.

  At this time, since the angle of the outer surface of the thin portion with respect to the pulling direction of the operation portion approaches a right angle as described above, the tensile force applied to the operation portion acts almost perpendicularly to the outer surface of the thin portion. Thus, most of the tensile force applied to the operation portion is a force that contributes to shearing the fracture portion. Thereby, the tensile force required to break the fracture portion is reduced, and the removal portion can be easily removed from the cap body and unplugged.

The cap according to the third aspect of the invention is a score in which the rupture portion is opened to the inner side of the container,
The thickness of the thin portion is thicker than the thickness of the partition wall in the score forming portion.
According to this, by pulling the operation part in the axial direction of the extraction cylinder part, the thin part is deformed, and the angle of the outer surface of the thin part with respect to the tensile direction of the operation part approaches from an obtuse angle to a right angle, The score breaks.

In the cap according to the fourth aspect of the present invention, a protrusion protruding toward the inner side of the container is formed between the score and the deformed portion.
According to this, when the score is broken by pulling the operation part in the axial direction of the dispensing cylinder part, it is possible to prevent the broken part from being derived from the score to the deformed part, and to surely break only the score. be able to.

In the cap according to the fifth aspect of the invention, the operation unit has a support column provided in the removal unit, and a pull ring provided at the tip of the support column.
The deforming portion is formed within a predetermined range in the circumferential direction from the mounting position of the column.

  According to this, by pulling the pull ring in the axial direction of the dispensing cylinder part, the deformed part is deformed, and the angle of the outer surface of the deformed part with respect to the pulling direction of the operating part approaches from an obtuse angle to a right angle, The part breaks.

  The cap in the sixth aspect of the invention has a lid that opens and closes the spout of the spout cylinder.

  As described above, according to the present invention, at the time of unplugging, the tensile force required to break the fracture portion is reduced, and the removal portion can be easily removed from the partition wall portion and unplugged.

It is a longitudinal cross-sectional view of the cap in the 1st Embodiment of this invention. It is a XX arrow line view in FIG. It is a YY arrow line view in FIG. It is a ZZ arrow line view in FIG. It is the figure which showed a mode that the partition part of a cap was fractured | ruptured from a score formation location similarly, (a) is the state before pulling up a pull ring, (b) is the state which pulled up the pull ring, (c) is a score formation location. Shows the state of breaking. It is a figure which shows the force which acts on a score formation location when pulling up the pull ring of a cap similarly. It is a longitudinal cross-sectional view of a cap and shows a state where a removal portion is removed. It is a longitudinal cross-sectional view of the cap in the 2nd Embodiment of this invention. It is a XX arrow line view in FIG. It is a longitudinal cross-sectional view of the conventional cap. It is the figure which showed a mode that the partition part of a cap was fractured | ruptured from the fracture | rupture part formation location similarly, (a) is the state which pulled up the pull ring, (b) shows the state which the fracture | rupture part formation location fractured | ruptured. It is a figure which shows the force which acts on a fracture | rupture part formation location when pulling up the pull ring of a cap similarly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
In the first embodiment, as shown in FIGS. 1 and 2, 1 is a cap attached to the container 2, and the cap 1 includes a cap body 4 attached to the mouth 3 of the container 2, and a hinge part. 5 and a lid 6 provided on the cap main body 4 via 5.

  The cap body 4 includes a cylindrical body portion 8, a cylindrical extraction tube portion 9 formed to protrude from the tip portion of the body portion 8, and the inside of the container 2 by closing the extraction tube portion 9. It has the partition part 10 which separates the exterior side.

  The body portion 8 has an inner tube portion 8a and an outer tube portion 8b, and a fitting portion 11 whose lower part is opened is formed over the entire circumference between the inner tube portion 8a and the outer tube portion 8b. The cap body 4 is attached to the container 2 by fitting the mouth part 3 of the container 2 into the fitting part 11.

  The partition wall 10 has a conical shape with the inner side (lower side) of the container 2 as the apex, and includes a score 12 (an example of a fractured portion) formed in an annular shape and a removal unit 13 surrounded by the score 12. Have. The score 12 is a groove opened on the inner side (downward) of the container 2.

The removal unit 13 is provided with an operation unit 15, and the operation unit 15 includes a support column 16 provided in the removal unit 13 and a pull ring 17 provided at a distal end portion of the support column 16.
A thin portion 26 (an example of a deformed portion) thinner than the thickness T <b> 1 of the removing portion 13 is formed outside the score 12 of the partition wall portion 10. As shown in FIGS. 3 and 4, the thickness T2 of the thin portion 26 is thicker than the thickness T3 of the partition wall portion 10 in the score forming portion. As shown in FIG. 2, the thin-walled portion 26 is formed in a range of 180 ° in the circumferential direction, that is, a range of a half circumference (an example of a predetermined range) with the mounting position of the support column 16 of the operation unit 15 as the center. The hatched portion in FIG. 2 does not indicate a cross section, but indicates the formation range of the thin portion 26.

Further, a protrusion 27 is formed between the score 12 and the thin portion 26 so as to protrude toward the inside (downward) of the container 2. The protrusion 27 is also formed in the same range as the thin portion 26.
The lid 6 has a circular lid plate portion 20 and a peripheral wall portion 21 provided on the periphery of the lid plate portion 20. A cylindrical inner ring 22 is provided on the inner side of the lid 6, and when the lid 6 is closed, the inner ring 22 is inserted into the spout 23 at the tip of the dispensing cylinder portion 9, and the outer circumferential surface of the inner ring 22 is It is in close contact with the inner peripheral surface of the extraction tube portion 9. Thereby, the spout 23 is closed and the fluid in the container 2 is prevented from leaking from between the inner ring 22 and the extraction tube portion 9 to the outside.

Hereinafter, the operation of the above configuration will be described.
The cap 1 in FIGS. 1 and 2 shows a state in which the cap 1 is not unplugged. When the cap 1 is used, the lid 6 is opened, a finger is inserted into the pull ring 17, and the pull ring 17 is inserted into the shaft of the dispensing cylinder portion 9. Pull in the central direction A (upward). At this time, since the thin portion 26 is weak in strength, it is easily deformed in the axial direction A. Therefore, as shown in FIG. 5A, when the pull ring 17 is pulled in the axial direction A, the thin portion 26 is deformed upward, and the angle C of the outer surface 26 a of the thin portion 26 with respect to the pulling direction A of the pull ring 17. Changes from an obtuse angle (eg, 110 °) shown in FIG. 5 (a) to a substantially right angle (90 °) as shown in FIG. 5 (b), and in this state, a score of 12 is obtained as shown in FIG. 5 (c). Is broken over the entire circumference, the removal portion 13 is removed from the cap body 4, and the extraction hole 29 is formed in the partition wall portion 10 as shown in FIG. 7. In addition, after a fracture | rupture, the part which remained in the cap main body 4 side of the partition part 10 restore | restores to an original shape with elasticity.

  At this time, as shown in FIG. 5 (b), the angle C becomes substantially a right angle, so that the tensile force F applied to the pull ring 17 is almost perpendicular to the outer surface 26a of the thin portion 26 as shown in FIG. The majority (almost all) of the tensile force F is a force that contributes to shearing the score 12. Thereby, the tensile force F required to break the score 12 is reduced, and the removal portion 13 can be easily removed from the cap body 4 and plugged.

  Further, since the protrusion 27 is formed, when the score 12 is broken as described above, it is possible to prevent the broken portion from being derived from the score 12 to the thin-walled portion 26, and only the score 12 is reliably broken. can do.

The outer surface 26a of the thin portion 26 is a surface facing the outside of the container 2 and is a surface on the side where the operation unit 15 is provided.
Table 1 below shows the values of tensile force F (unplugging force) required to remove and remove the removal portion 13 from the cap body 4 for the plurality of caps 1. In the cap 1 in which the thin wall portion 26 is formed in the partition wall portion 10, the tensile force F is reduced as compared with the cap 1 in which the thin wall portion 26 is not formed.

(Second Embodiment)
In the second embodiment, as shown in FIGS. 8 and 9, the thin-walled portion 26 has a 360 ° range in the circumferential direction, that is, a full-range range (predetermined range) around the position of the support column 16 of the operation unit 15. For example). The hatched portion in FIG. 9 does not indicate a cross section, but indicates the formation range of the thin portion 26.

According to this, the same operation and effect as the first embodiment can be obtained.
In each of the above embodiments, as shown in FIG. 5B, when the pull ring 17 is pulled in the axial direction A, the thin portion 26 is deformed upward, and the thin portion 26 in the pull direction A of the pull ring 17 is deformed. The angle C of the outer surface 26a changes to approximately 90 °. In this state, the score 12 is broken as shown in FIG. 5C, but the angle C is within the range of 80 ° to 100 °. It may be configured such that the score 12 breaks in a state in which the score 12 is changed, or may be configured so that the score 12 breaks in a state in which the angle C has changed to 90 °.

  In each of the above embodiments, as shown in FIGS. 2 and 9, the score 12 is formed in an annular shape in the partition wall portion 10, and the mounting portion of the support column 16 of the operation portion 15 and 180 ° opposite to the mounting portion. The portion has a shape that is pointed radially outward. However, it is not limited to such a shape. For example, the score 12 may be formed in a perfect circle shape.

  In each of the above-described embodiments, as shown in FIGS. 1 and 8, the cap 1 of the type having the lid 6 that can be opened and closed via the hinge portion 5 has been shown. It may be.

DESCRIPTION OF SYMBOLS 1 Cap 2 Container 3 Mouth part 4 Cap main body 6 Lid 9 Extraction cylinder part 10 Partition part 12 Score (rupture part)
13 Removal part 15 Operation part 16 Strut 17 Pull ring 23 Spout 26 Thin part (deformation part)
26a Outer surface 27 of thin portion 27 Projection portion 29 Aperture direction A Axial direction, tensile direction C Angle T1 Thickness of removal portion T2 Thickness of thin portion T3 Thickness of partition wall in score forming portion

Claims (6)

Having a cap body attached to the mouth of the container;
The cap body has a dispensing cylinder part and a partition part closing the dispensing cylinder part,
The partition wall has a rupture portion formed in an annular shape, and a removal portion surrounded by the rupture portion,
An operation unit is provided in the removal unit,
By pulling the operation part in the axial direction of the extraction cylinder part, the fracture part is broken and the removal part is removed from the cap body, and the extraction hole is formed in the partition part,
The partition wall has a conical shape with the inner side of the container as a vertex,
A deformed part is formed outside the fracture part of the partition part,
The deformation part is formed in a predetermined range in the circumferential direction from the mounting position of the operation part,
A cap characterized in that when the operating part is pulled in the axial direction of the dispensing cylinder part, the deforming part is deformed so that the angle of the outer surface of the deforming part with respect to the pulling direction of the operating part approaches a right angle from an obtuse angle. The cap according to claim 1, wherein the deformable portion is a thin portion thinner than the thickness of the removal portion. The break is the score opened to the inside of the container,
The cap according to claim 2, wherein the thickness of the thin portion is thicker than the thickness of the partition wall in the score forming portion. The cap according to any one of claims 1 to 3, wherein a protrusion projecting toward the inner side of the container is formed between the score and the deformed portion. The operation unit has a support column provided in the removal unit and a pull ring provided at the tip of the support column.
The cap according to any one of claims 1 to 4, wherein the deformable portion is formed in a predetermined range in a circumferential direction from a mounting position of the support column. The cap according to any one of claims 1 to 5, further comprising a lid that opens and closes the spout of the extraction tube portion.

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