JP2016008058A - cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap by which when a lid is moved in an axial direction and then attached to an inner plug, the need of aligning the lid in a circumference direction relative to the inner plug is eliminated and when the lid is rotated to detached from the inner plug, a detaching part can be held inside the lid by a simple constitution.SOLUTION: An inner plug 4 has a detaching part 10 surrounded with a weakened part 15 which can be broken; a lid 5 has a holding part 30 therein; first engagement parts 37 are circumferentially formed in a plural number on an outer periphery of the detaching part 10; second engagement parts 38 are circumferentially formed in a plural number on an inner periphery of the holding part 30; when the lid 5 is moved in an axial direction and then attached to the inner plug 4, the detaching part 10 enters the holding part 30, and either one engagement parts of the first and the second engagement parts 37 and 38 are introduced between the other engagement parts; and when the lid 5 is rotated in an open direction O, the first engagement parts 37 are engaged with the second engagement parts 38 in the open direction O.

Description

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

  Conventionally, as this kind of cap, for example, as shown in FIGS. 17 to 19, it has an inner plug 101 attached to the mouth of the container, and a lid 102 that is detachable from the inner plug 101 by rotating, The inner plug 101 has a removal region (not shown) surrounded by a thin line (not shown) that can be broken around. The inner plug 101 is broken when the thin line breaks and the removal region is detached from the inner plug 101. In which a spout (not shown) is formed is described.

  As shown in FIG. 17, an oval cylindrical locking wall 106 is provided in the removal region, and a groove 107 is formed on the outer surface of the locking wall 106. Further, as shown in FIG. 18, a plurality of outer locking projections 108 and inner locking projections 109 are provided inside the lid 102, and a protrusion 110 is formed on the outer locking projection 108. A male screw 111 is formed on the outer periphery of the inner plug 101, and a female screw 112 is formed on the inner periphery of the lid 102.

  According to this, when the lid 102 is moved in the axial direction 113 and attached to the inner plug 101, the inner locking projection 109 is inserted inside the locking wall 106 and the outer locking projection as shown in FIG. 108 is located outside the locking wall 106. Thereafter, the inner stopper 101 is attached to the mouth of the container.

  Thereafter, when the contents of the container are consumed, the lid 102 is rotated in the opening direction 114. As a result, the outer locking projection 108 contacts the outer peripheral surface of the locking wall 106, the inner locking projection 109 contacts the inner peripheral surface of the locking wall 106, and the outer and inner locking projections 108, 109 open in the opening direction. 114, the thin wall line is broken by the rotational force applied to the locking wall 106 through the outer and inner locking projections 108 and 109, and the removal region is removed from the inner plug 101. A spout is formed in the stopper 101.

At this time, since the protrusion 110 is engaged with the groove 107 of the locking wall 106 in the outer locking projection 108, the removal area is held inside the lid 102 when the lid 102 is removed from the inner plug 101. The
The cap as described above is described in, for example, Patent Document 1 below.

JP2012-210973

  However, in the above-described conventional type, when the lid 102 is moved in the axial direction 113 and attached to the inner plug 101, the inner locking projection 109 is inserted into the locking wall 106 and the outer side as shown in FIG. It is necessary to accurately align the lid 102 with respect to the inner plug 101 in the circumferential direction so that the locking projection 108 is positioned outside the locking wall 106, and there is a problem that such alignment is troublesome. . If the position of the lid 102 is shifted in the circumferential direction without alignment, the tip of the inner locking projection 109 or the tip of the outer locking projection 108 in the axial direction 113 abuts the tip of the locking wall 106. There is a problem that the lid 102 cannot be attached to the inner plug 101.

  Further, when the lid 102 is rotated and removed from the inner plug 101, a groove 107 is formed in the locking wall 106 and the protrusion 110 is formed on the outer locking projection 108 in order to hold the removal region inside the lid 102. There is a problem that it is necessary to form and the configuration becomes complicated.

  The present invention eliminates the need to align the lid in the circumferential direction with respect to the inner plug when the lid is moved in the axial direction and attached to the inner plug, and has a simple configuration when the lid is rotated and removed from the inner plug. It is an object of the present invention to provide a cap that can hold the detachment portion (removal region) inside the lid.

In order to achieve the above object, the first invention has an inner stopper attached to the mouth of the container, and a screw-type lid that can be attached to and detached from the inner stopper by rotating.
The inner plug has a separation part surrounded by a weakened part that can be broken around,
A cap in which a spout is formed in the inner plug when the weakened part is broken and the detachment part is detached from the inner plug,
The lid has a cylindrical holding part inside,
A plurality of first engaging portions are formed in the circumferential direction on the outer periphery of the separation portion,
A plurality of second engaging portions are formed in the circumferential direction on the inner periphery of the holding portion,
When the lid is moved in the axial direction and attached to the inner plug, the detachment portion enters the holding portion, and the other engagement portion is introduced between one of the first and second engagement portions. And
When the lid rotates in the opening direction, the first engaging portion and the second engaging portion are engaged in the opening direction.

  According to this, when the lid is moved in the axial direction and attached to the inner plug, the detachment portion enters and is held in the holding portion, and between one of the first and second engaging portions. Since the other engaging portion is introduced into the lid, it is not necessary to align the lid with respect to the inner plug in the circumferential direction.

  After attaching the lid to the inner stopper, attach the inner stopper to the mouth of the container. Thereafter, when the contents of the container are consumed, the lid is rotated in the opening direction. As a result, the first engagement portion and the second engagement portion are engaged in the opening direction, and the rotational force of the lid is applied to the separation portion via the first and second engagement portions, and this rotation The weakened portion is broken by the force, the detached portion is detached from the inner plug, and a spout is formed in the inner plug.

  At this time, since the detachment portion enters and is held in the holding portion, when the lid is rotated and removed from the inner plug, the detachment portion remains inside the lid without falling off from the inside of the lid. In this way, since the detachable portion can be held inside the lid with a simple configuration only having a cylindrical holding portion on the lid, the groove is used to hold the detachable portion inside the lid as in the past. There is no need to form ridges.

The cap according to the second aspect of the present invention is provided with guide means for guiding the other engaging portion between any one of the first and second engaging portions.
According to this, when the lid is moved in the axial direction and attached to the inner plug, the detachment portion enters and is held in the holding portion, and the other engagement portion is guided between the one engagement portions by the guide means. Therefore, it is not necessary to align the lid in the circumferential direction with respect to the inner plug.

In the cap according to the third aspect of the present invention, the first engagement portion is a first protrusion that protrudes radially outward from the outer periphery of the detachment portion,
The second engagement portion is a second protrusion that protrudes radially inward from the inner periphery of the holding portion,
The guide means is an inclined surface formed on at least one of the first and second protrusions.

  According to this, when the lid is moved in the axial direction and attached to the inner plug, the detaching portion enters the holding portion and is held, and the other protruding portion is introduced while being guided between the protruding portions by the inclined surface. Therefore, it is not necessary to align the lid in the circumferential direction with respect to the inner plug.

The cap according to the fourth aspect of the present invention is formed with screws that are screwed together on the outer periphery of the inner plug and the inner periphery of the lid,
At least one of the screw of the inner plug and the screw of the lid is formed intermittently in the circumferential direction.

  According to this, when the lid is moved in the axial direction and attached to the inner plug, the detachment portion enters and is held in the holding portion, and between one of the first and second engaging portions. The other engaging portion is introduced into the lid, and the screw thread of the lid rides over the screw thread of the inner plug. Since at least one of the screw of the inner plug and the screw of the lid is formed not intermittently but around the entire circumference, the resistance when the screw thread of the lid crosses the screw thread of the inner plug is reduced, and the lid is The force required to attach to the inner plug can be reduced.

In the cap according to the fifth aspect of the invention, the inner plug has a dispensing cylinder,
The separation part is provided in the dispensing cylinder,
An annular gap is formed between the outer periphery of the separation part and the inner periphery of the dispensing cylinder,
The weakened part is at the bottom of the gap,
In the lid, a contact portion that can contact the detachment portion from the mounting direction of the lid is formed,
When the lid is attached to the inner plug, the holding portion is inserted into the gap from the attachment direction, and the contact portion comes into contact with the detachment portion from the attachment direction.

  According to this, when the lid is moved in the axial direction and attached to the inner plug, the holding portion is inserted into the gap from the attachment direction, and the contact portion comes into contact with the detachment portion from the attachment direction. As a result, the amount of insertion of the holding portion into the gap is restricted, so that the holding portion is not excessively inserted into the gap, and the tip of the holding portion comes into contact with the weakened portion and breaks the weakened portion. Can be prevented.

  As described above, according to the present invention, when the lid is moved in the axial direction and attached to the inner plug, it is not necessary to align the lid with respect to the inner plug in the circumferential direction. Thereafter, when the lid is rotated and removed from the inner plug, the detachable portion can be held inside the lid with a simple configuration.

It is the side view which displayed the cross section of the half of the cap in the 1st Embodiment of this invention. It is a perspective view of the inner cap of the cap. It is a top view of the inner cap of the cap. It is the side view which carried out the cross section display of the half of the cap of the cap same as the above. FIG. 4 is an enlarged view of a portion X in FIG. 3. It is a YY arrow line view in FIG. 5, and shows the shape when the 1st projection part is seen from the radial direction outer side of the detachment | leave part. It is a perspective view of the lid of a cap same as the above. It is a WW arrow directional view in FIG. It is the side view which displayed the cross section of the half of the lid | cover of the cap same as the above. It is an enlarged view of the Z part in FIG. It is a VV arrow line view in Drawing 10, and shows the shape when the 2nd projection part is seen from the diameter direction inside of a holding part. It is a figure which shows a mode that a 2nd projection part is introduce | transduced while being guided between 1st projection parts, when a lid | cover of a cap is stoppered to an inside stopper. It is a figure which shows a mode at the time of stoppering the lid of a cap to an inner stopper using a jig | tool. It is a figure which shows the state which rotated the cover of the cap and removed from the inside plug. It is a top view of the cap of the cap in the 2nd Embodiment of this invention. It is a bottom view of the lid | cover of a cap same as the above. It is a perspective view of the conventional inner plug. It is a perspective view of a lid | cover similarly. FIG. 6 is a perspective view of the locking wall and the outer and inner locking protrusions when the lid is attached to the inner plug.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
In the first embodiment, as shown in FIG. 1, reference numeral 1 denotes a cap attached to the container 2. The cap 1 has an inner plug 4 attached to the mouth 3 of the container 2 and a screw-type lid 5 that can be attached to and detached from the inner plug 4 by rotating.

  As shown in FIGS. 2 to 6, the inner plug 4 has a cylindrical body portion 8, a cylindrical pouring tube 9 that protrudes from the tip of the body portion 8, and the pouring tube 9 is closed. The container 2 has a separation part 10 that separates the inside and the outside of the container 2 and a first cylindrical part 11.

  The body portion 8 includes an inner cylinder portion 12 and an outer cylinder portion 13, and a fitting portion 14 that is open downward is formed between the inner cylinder portion 12 and the outer cylinder portion 13 over the entire circumference. When the mouth 3 of the container 2 is fitted into the fitting part 14, the inner plug 4 is attached to the container 2 as shown in FIG. 1.

  The detachment part 10 is provided in the extraction tube 9 and is surrounded by an annular weakening part 15 whose periphery can be broken. The weakened portion 15 is a thin line. As shown in FIG. 14, the weakened portion 15 is broken and the detachable portion 10 is detached from the inner plug 4, thereby forming a spout 16 in the dispensing tube 9. Is done.

  The detachment portion 10 includes a cylindrical portion 17, a conical portion 18 whose diameter decreases from the tip of the cylindrical portion 17 upward, and a circular top plate portion 19 that closes the upper end of the conical portion 18. An annular gap 20 is formed between the outer periphery of the separation part 10 and the inner periphery of the dispensing cylinder 9, and the weakening part 15 is at the bottom of the gap 20.

  The first cylindrical portion 11 is on the outer side in the radial direction of the dispensing cylinder 9 and is formed so as to surround the outer periphery of the dispensing cylinder 9. A male screw 22 is formed on the outer peripheral surface of the first cylindrical portion 11 over the entire circumference. Further, on the outer peripheral surface of the body portion 8, a protruding portion 23 and an outer flange portion 24 that protrude outward in the radial direction are formed over the entire circumference. The protruding portion 23 is located between the male screw 22 and the outer flange portion 24 in the axial direction A. A recess 25 is formed between the protrusion 23 and the outer flange 24.

  As shown in FIGS. 7 to 11, the lid 5 includes a circular top plate portion 27 (an example of a contact portion), a cylindrical skirt portion 28 depending from the outer peripheral edge of the top plate portion 27, and a falsification preventing circle. An annular sealing band 29 is provided, and a holding portion 30 and a second cylindrical portion 31 are provided inside. The sealing band 29 is cut from the lower end of the skirt portion 28 except for connection portions 32 (bridges) formed at a plurality of locations in the circumferential direction, and is connected to the lower end of the skirt portion 28 only through the connection portion 32. ing. Further, a convex portion 35 is formed over the entire inner periphery of the lower end of the sealing band 29, and the convex portion 35 is fitted into the concave portion 25 with the lid 5 attached to the inner plug 4.

  The holding part 30 is a cylindrical member and is suspended from the top plate part 27. Further, as shown in FIG. 1, the top plate portion 27 can contact the upper end surface of the detaching portion 10 from the attachment direction B of the lid 5. The second cylindrical portion 31 is provided between the skirt portion 28 and the holding portion 30 in the radial direction. A female screw 33 is formed on the entire inner peripheral surface of the second cylindrical portion 31, and as shown in FIG. 1, the male screw 22 of the inner plug 4 and the female screw 33 of the lid 5 are screwed together.

Further, an annular fitting portion 34 protruding from the inner surface of the top plate portion 27 into the holding portion 30 is provided inside the holding portion 30.
As shown in FIGS. 2 to 6, a plurality of first protrusions 37 (an example of the first engaging portion) are formed in the circumferential direction C on the outer peripheral surface of the detaching portion 10 of the inner plug 4. As shown in FIG. 11, a plurality of second protrusions 38 (an example of a second engagement portion) are formed in the circumferential direction C on the inner peripheral surface of the holding portion 30 of the lid 5.

  Each first protrusion 37 protrudes radially outward from the outer peripheral surface of the detachable portion 10, and has a mountain shape with a tapered upper end (tip) as seen from the radially outer side, as shown in FIG. 6. Each first protrusion 37 is formed across the outer peripheral surface of the conical portion 18 and the outer peripheral surface of the cylindrical portion 17 of the detachable portion 10. Each of the second protrusions 38 protrudes radially inward from the inner peripheral surface of the holding part 30, and as shown in FIG. 11, as viewed from the radial inner side, the lower end (tip) is a tapered reverse mountain. Shape.

  As shown in FIGS. 6, 11, and 12, in the circumferential direction C, the second protrusions 38 (of the other engagement part) are adjacent between the first protrusions 37 (an example of one engagement part) adjacent to each other. First and second inclined surfaces 41 and 42 (an example of guiding means) for guiding (an example) are formed on the first and second protrusions 37 and 38. That is, the first inclined surface 41 is formed on the first protrusion 37, and the second inclined surface 42 is formed on the second protrusion 38.

Hereinafter, the operation of the above configuration will be described.
First, after the inner plug 4 and the lid 5 are individually manufactured, the lid 5 is moved in the axial direction A and attached to the inner plug 4. At this time, as shown in FIG. 13, the jig 50 is inserted into the inner plug 4, and the lid 5 is plugged (driven) from the upper side of the inner plug 4 downward (mounting direction B). Thereby, as shown in FIG. 1, the holding portion 30 is inserted into the gap 20 (see FIG. 4) from the mounting direction B (that is, the plugging direction), and the top plate portion 27 is moved from the mounting direction B to Abutting on the end face, the internal thread 33 gets over the external thread 22, the convex part 35 of the sealing band 29 is fitted into the concave part 25, the separation part 10 enters and is held in the holding part 30, and the tip part of the separation part 10 is the fitting part As shown in FIG. 12, the second protrusion 38 is introduced between the first protrusions 37, and the lid 5 is attached to the inner plug 4.

  At this time, as shown in FIG. 1, since the top plate portion 27 comes into contact with the upper surface of the detachment portion 10 from the mounting direction B as described above, the amount of insertion of the holding portion 30 into the gap 20 (see FIG. 4) is restricted. The Accordingly, the holding portion 30 is not excessively inserted into the gap 20, and the tip of the holding portion 30 can be prevented from coming into contact with the weakened portion 15 and breaking the weakened portion 15.

  Further, when the lid 5 is attached to the inner plug 4 by being plugged, as the lid 5 moves in the attachment direction B with respect to the inner plug 4, as shown in FIG. Since the second projecting portion 38 comes into contact with the first inclined surface 41 and is guided between the first projecting portions 37 by the first and second inclined surfaces 41 and 42, the lid 5 is inserted into the inner plug. 4 does not need to be aligned in the circumferential direction C.

  Furthermore, even if the center of the lid 5 is slightly displaced in the radial direction with respect to the center of the inner plug 4, the tip of the holding portion 30 of the lid 5 is the outer periphery of the conical portion 18 of the detaching portion 10 of the inner plug 4. By moving in the mounting direction B while abutting on the surface, the lid 5 is guided and positioned in the radial direction with respect to the inner plug 4, so that the deviation of the lid 5 in the radial direction is corrected.

After attaching the lid 5 to the inner plug 4, the jig 50 is removed from the inside of the inner plug 4, and the mouth 3 of the container 2 is fitted into the fitting portion 14 as shown in FIG. 2 is attached.
Thereafter, when the contents of the container 2 are consumed, the lid 5 is rotated in the opening direction O. As a result, the first protrusion 37 and the second protrusion 38 are engaged with each other in the opening direction O, and the rotational force of the lid 5 is released via the first and second protrusions 37 and 38. 14, the weakening portion 15 is broken by this rotational force, the detachment portion 10 is detached from the inner plug 4, and a spout 16 is formed in the extraction tube 9 of the inner plug 4. .

  At this time, since the detaching part 10 enters and is held in the holding part 30, when the lid 5 is rotated and removed from the inner plug 4, the detaching part 10 does not fall off from the inside of the lid 5. Stay inside. As described above, since the detachable portion 10 can be held inside the lid 5 with a simple configuration in which the lid 5 includes the cylindrical holding portion 30, the detachable portion is held inside the lid as in the past. There is no need to form grooves or ridges to do this.

  When the lid 5 is rotated and removed from the inner plug 4, the connecting portion 32 connecting the sealing band 29 and the skirt portion 28 with the convex portion 35 of the sealing band 29 fitted in the concave portion 25. Is broken, and the sealing band 29 is separated from the lid 5 and remains on the inner plug 4 side.

In addition, when the distal end portion of the detachment portion 10 is fitted into the fitting portion 34, the detachment portion 10 is more firmly fixed in the holding portion 30.
(Second Embodiment)
In the second embodiment, as shown in FIG. 15, the protrusions 23 are intermittently (not at the entire circumference of the body part 8 of the inner plug 4 but at eight places distributed every 45 ° in the circumferential direction ( (Discontinuous). In addition, it is not limited to eight places, You may form the projection part 23 in multiple places other than eight places. In addition, as shown in FIG. 16, the internal thread 33 is formed intermittently (non-continuously) at four locations distributed every 90 ° in the circumferential direction, not on the entire circumference of the second cylindrical portion 31 of the lid 5. Has been. In addition, it is not limited to four places, You may form the internal thread 33 in multiple places other than four places.

  According to this, since the internal thread 33 is intermittently formed in the circumferential direction C of the lid 5, as shown in FIG. 13, the jig 50 is inserted into the inside plug 4, and the lid 5 is attached to the inside plug 4. When plugging downward from above, the resistance when the internal thread 33 gets over the external thread 22 is reduced. Thereby, it is possible to reduce the pressing force required to plug and attach the lid 5 to the inner plug 4.

  Similarly, since the projecting portion 23 is also intermittently formed in the circumferential direction C of the inner plug 4, when the projecting portion 35 of the sealing band 29 is fitted into the recessed portion 25, when the projecting portion 35 gets over the projecting portion 23. Resistance is reduced. Thereby, the pressing force required to plug and attach the lid 5 to the inner plug 4 can be further reduced.

  In the second embodiment, the female screw 33 is intermittently formed and the male screw 22 is formed over the entire circumference. However, the male screw 22 may be formed intermittently and the female screw 33 may be formed over the entire circumference. . Further, the male screw 22 and the female screw 33 may be formed intermittently.

  Moreover, although the projection part 23 is formed intermittently and the convex part 35 is formed over the perimeter, the convex part 35 may be formed intermittently and the projection part 23 may be formed over the whole circumference. Moreover, you may form the projection part 23 and the convex part 35 intermittently, respectively.

  In each of the above embodiments, as shown in FIG. 6, the first inclined surface 41 is formed on the first protrusion 37, and as shown in FIG. 11, the second inclined surface is formed on the second protrusion 38. Although 42 is formed, only one of the first inclined surface 41 and the second inclined surface 42 may be formed.

DESCRIPTION OF SYMBOLS 1 Cap 2 Container 3 Mouth part 4 Inner plug 5 Lid 9 Outlet cylinder 10 Detaching part 15 Weakening part 16 Outlet 20 Gap 22 Male screw 27 Top plate part (contact part)
30 Holding part 33 Female screw 37 1st protrusion part (1st engaging part)
38 2nd protrusion (2nd engaging part)
41 1st inclined surface (guide means)
42 2nd inclined surface (guide means)
A Axial direction B Mounting direction C Circumferential direction O Open direction

Claims (5)

It has an inner stopper attached to the mouth of the container, and a screw-type lid that can be attached to and detached from the inner stopper by rotating,
The inner plug has a separation part surrounded by a weakened part that can be broken around,
A cap in which a spout is formed in the inner plug when the weakened part is broken and the detachment part is detached from the inner plug,
The lid has a cylindrical holding part inside,
A plurality of first engaging portions are formed in the circumferential direction on the outer periphery of the separation portion,
A plurality of second engaging portions are formed in the circumferential direction on the inner periphery of the holding portion,
When the lid is moved in the axial direction and attached to the inner plug, the detachment portion enters the holding portion, and the other engagement portion is introduced between one of the first and second engagement portions. And
A cap characterized in that when the lid rotates in the opening direction, the first engaging portion and the second engaging portion engage in the opening direction. 2. The cap according to claim 1, further comprising a guide means for guiding the other engaging portion between any one of the first and second engaging portions. The first engagement portion is a first protrusion that protrudes radially outward from the outer periphery of the detachment portion,
The second engagement portion is a second protrusion that protrudes radially inward from the inner periphery of the holding portion,
3. The cap according to claim 2, wherein the guide means is an inclined surface formed on at least one of the first and second protrusions. Screws that are screwed together are formed on the outer periphery of the inner plug and the inner periphery of the lid,
The cap according to any one of claims 1 to 3, wherein at least one of the screw of the inner plug and the screw of the lid is formed intermittently in the circumferential direction. The inner plug has a dispensing tube,
The separation part is provided in the dispensing cylinder,
An annular gap is formed between the outer periphery of the separation part and the inner periphery of the dispensing cylinder,
The weakened part is at the bottom of the gap,
In the lid, a contact portion that can contact the detachment portion from the mounting direction of the lid is formed,
5. When attaching a lid to an inner plug, the holding portion is inserted into the gap from the attachment direction, and the abutment portion abuts on the detachment portion from the attachment direction. Cap as described in.

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