JP2020059538A - cap - Google Patents

Abstract

To provide a cap in which the rotational force required at the time of opening can be relatively small and an upper lid does not fall off from an over-cap even when receiving a small impact.SOLUTION: An inner plug 4, an upper lid 5, and an over-cap 6 are provided, and the upper lid 5 and the over-cap 6 are provided with a fitted part (outer peripheral projecting/recessing line) 45 and a fitting part 54 which can be fitted to each other. The fitted part 45 is formed on an outer periphery of the upper lid 5 in an embossed shape at a predetermined circumferential angler. The fitting part 54 includes a plurality of guide fitting parts 54A which are provided adjacent to each other in a circumferential direction at a separation angle that is an integral multiple of the angle at which the fitted part 45 is provided, and a deformable fitting part 54B which is fitted while being elastically deformed in the circumferential direction with respect to the fitted part 45 of the guide fitting part 54A provided at the separation angle different from an integer multiple of the angle at which the fitted part 45 is provided.SELECTED DRAWING: Figure 15

Description

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

  Conventionally, as a cap of this type, an inner stopper attached to the mouth of a container and an upper lid that can be attached to and detached from the inner stopper by rotation are provided, and the inner stopper is surrounded by a weakened portion of a thin line that can be broken around. Some of them have a removed area that is removed, and when the upper lid is attached to the inner stopper and rotated, the weakened portion is broken, the removed area is fitted into the upper lid, and a spout is formed in the inner stopper. . This cap is hygienic because the inner plug attached to the mouth of the container can maintain a closed state when not in use.

  However, the size of the upper lid and the inner stopper when viewed in plan does not change much (for example, both are substantially circular (the upper lid has a substantially cylindrical shape and their diameters do not change much), and the cutting is performed to cut the removal region. When the size is relatively large, a relatively large force (a large torque) must be applied to the upper lid when the upper lid is rotated to separate the removal area of the inner plug.

  As a method of reducing the force at the time of cutting, for example, as disclosed in Patent Document 1, it is considered that an overcap having a diameter larger than that of the upper lid is fitted and covered. That is, the overcap and the upper lid are provided with a fitting portion or a fitted portion that can be integrally rotated in the radial direction, and the overcap is rotated at the time of opening, so that the inner upper lid is also integrally rotated. , So that the removal area is cut. As a result, the force (torque) for rotating the overcap at the time of opening can be reduced, and the workability is improved. It should be noted that the fitting portion and the fitted portion provided on the overcap and the upper lid are formed in a concavo-convex shape at a predetermined same angle with respect to the circumferential direction in plan view.

JP2012-126402A

  However, in the configuration in which the overcap is fitted and covered on the upper lid as disclosed in Patent Document 1, the upper lid is held in the overcap by the frictional force that locks the overcap and the upper lid in the radial direction. However, if a small impact is applied, the upper lid may fall off from the overcap.

  The present invention solves the above-described problems, and provides a cap that can relatively reduce the rotational force required when opening and that can prevent the upper lid from falling off from the overcap even when a small impact is applied. The purpose is to do.

  MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention is an inner stopper attached to the opening part of a container, the upper lid which can be attached or detached to an inner stopper by rotating, and is covered in the state fitted with this upper lid, and is integrated. The inner stopper has a rotatable overcap, and the inner stopper has an inner stopper body portion and a detaching portion detachably provided from the inner stopper body portion via a weakening portion, and the upper lid is rotated by the upper lid. The cap is provided with a rotary engaging portion that engages with the detaching portion of the inner plug when detaching and disengages the detaching portion from the inner plug main body, and the upper lid and the overcap can be fitted to each other. A fitted portion and a fitting portion are provided, and the fitted portion is formed on the outer circumference of the upper lid or the inner circumference of the overcap in a concavo-convex shape at a predetermined angle with respect to the circumferential direction. The angle of separation between adjacent portions in the circumferential direction is the angle at which the fitted portion is provided. A plurality of guide fitting portions provided at an integer multiple angle and a separation angle in the circumferential direction with respect to the guide fitting portion are different from an integer multiple angle of the fitted portion. A deformable fitting portion that is provided at an angle and that is fitted to the fitted portion while being elastically deformed in the circumferential direction.

  According to the above-described configuration, the fitting portions to be fitted to the fitted portion are provided with mutually adjacent circumferential separation angles at an angle that is an integral multiple of the angle at which the fitted portion is provided. Not only the plurality of guide fitting portions are provided, but the separation angle in the circumferential direction with respect to the guide fitting portion is provided at an angle different from an integer multiple of the angle at which the fitted portion is provided. Since a deformable fitting portion is provided that elastically deforms in the circumferential direction with respect to the fitted portion, when the overcap is fitted on the upper lid and covered, the deformable fitting portion elastically deforms in the circumferential direction. While mating. Accordingly, even when a relatively small impact is applied, it is possible to prevent the upper lid from dropping downward from the overcap, and it is possible to hold the upper lid in a state where the upper lid does not drop by the overcap. Then, in this state, the overcap is rotated and the upper lid is also integrally rotated, so that the weakened portion of the inner stopper can be cut and the detached portion can be detached, so that the spout can be formed in the inner stopper. At this time, since the overcap is rotated, the rotational force required for cutting the weakened portion can be made relatively small.

  In the present invention, the fitted portion is formed on an upper lid, the fitting portion is formed on an overcap, and the guide fitting portion is arranged so that a top surface of the overcap faces upward. It is preferable that the lower end portion is formed at a position lower than the lower end portion of the deformation fitting portion.

  According to this structure, the lower end portion of the guide fitting portion is formed at a position lower than the lower end portion of the deformable fitting portion in a state where the top surface portion of the overcap faces upward. Therefore, when assembling the overcap onto the upper lid by tapping along the direction orthogonal to the circumferential direction, first, the guide fitting portion of the overcap is fitted to the fitted portion of the upper lid. After that, the deformable fitting portion of the overcap is fitted to the fitted portion of the upper lid. That is, when assembling the upper cap by plugging the overcap or the like, in the first stage, the fitted portion is provided at the circumferential separation angle between the guide fitting portions adjacent to each other. Since only the guide fitting portion provided at an angle which is an integral multiple of the angle fits into the fitted portion, the stopper can be tapped with a relatively small force. Further, the deformed fitting portion of the overcap is provided with a separation angle with respect to the guide fitting portion that is different from an angle that is an integral multiple of the angle at which the fitted portion is provided. When the fitting part is fitted to the fitted part of the upper lid, the guide fitting part is already fitted to the fitted part, and the overcap and the upper lid are already held in a state in which they cannot move in the circumferential direction. Since it is positioned (positioned), even if the increase in the tapping force is suppressed to a minimum, it can be fitted into the mating part of the upper lid while deforming the deformed mating part, which is necessary for capping. It is possible to keep the power low. In addition, the deformable fitting portion of the overcap is deformed into the fitted portion of the upper lid and is fitted while being bitten by a comparatively large force, so that the overcap can be favorably held without falling off the upper lid. .

  Further, the fitting portion and the fitted portion are formed in a shape that extends along a straight line direction orthogonal to the circumferential direction in the upper lid and the overcap, and the distal end portion of the deformable fitting portion has a circumferential dimension toward the tip. It is preferable that the inclined surface is formed so that According to this configuration, when the deformable fitting portion starts to be fitted to the fitted portion, the inclined surface formed at the distal end portion of the deformable fitting portion is smoothly fitted while slidingly contacting the fitted portion. This also makes it possible to suppress the force required when assembling the overcap by tapping the upper cap.

  Further, it is preferable that the overcap is provided with a cover portion to cover the upper lid and a holding foot portion that extends downward from the cover portion and elastically deforms in the radial direction to hold the upper lid. According to this configuration, by covering the upper lid with the overcap, the upper lid can be held by the holding foot portion, and the upper lid can be more reliably held by the overcap.

  Further, the present invention is a method of assembling the cap, wherein the overcap is assembled to the upper lid, wherein the overcap is capped along the axial direction orthogonal to the circumferential direction with respect to the upper lid. It is characterized in that the guide fitting portion is fitted to the fitted portion and then the deformable fitting portion is fitted to the fitted portion at the time of assembling and tapping. With this method, when the deformable fitting part is fitted to the fitted part, the guide fitting part is already fitted to the fitted part, so the force required for tapping should be kept low. Is possible.

  ADVANTAGE OF THE INVENTION According to the cap of this invention, in the fitting part fitted to the fitted part, the mutually adjacent circumferential separation angle is provided at an integer multiple of the angle at which the fitted part is provided. In addition to providing a plurality of guide fitting portions, the separation angle in the circumferential direction with respect to the guide fitting portion is different from an angle that is an integral multiple of the angle at which the fitted portion is provided. By providing the deformable fitting portion that is provided and fits while being elastically deformed in the circumferential direction with respect to the fitted portion, even when a relatively small impact is received, the upper lid is dropped downward from the overcap. The overcap can be prevented, the upper lid can be held without falling off by the overcap, and the reliability of the cap can be improved.

  In the state where the fitted portion is formed on the upper lid, the fitting portion is formed on the overcap, and the top surface portion of the overcap is arranged to face upward, the lower end portion of the guide fitting portion is Since it is formed at a position lower than the lower end of the deformable fitting portion, when assembling the overcap by capping it with respect to the upper lid, it is possible to suppress the force required at the time of capping to a low level. Become.

  In addition, the fitting portion and the fitted portion are formed in a shape that extends along a straight line direction orthogonal to the circumferential direction in the upper lid and the overcap, and the distal end portion of the deformable fitting portion has a circumferential dimension closer to the tip. Even if the inclined surface is formed so as to be smaller, it is possible to suppress the force required for assembling the overcap by stoppering it on the upper lid.

  As a method for assembling the overcap to the upper lid of the cap, the guide fitting portion is fitted to the fitted portion and the deformable fitting portion is fitted to the fitted portion at the time of tapping. When the deformable fitting part is fitted to the fitted part, the guide fitting part is already fitted to the fitted part. It is possible to keep the value low.

It is a partially cutaway front view of the cap according to the embodiment of the present invention. It is a top view of the inner plug of the same cap. It is a partially cutaway front view of the inner plug of the cap. It is a top view of the upper lid of the same cap. It is a partially cutaway front view of the upper lid of the cap. It is a bottom view of the upper lid of the same cap. It is a partial notch front view of the overcap in the same cap. It is a bottom view of the overcap of the same cap. It is a longitudinal cross-sectional view of the guide fitting part of the same overcap and the vicinity thereof. It is the arrow view which looked at the guide fitting part of the same overcap from the axial center position of the overcap. It is a longitudinal cross-sectional view of the deformation fitting part of the same overcap and its vicinity. It is the arrow view which looked at the deformation | transformation fitting part of the same overcap from the axial center position of the overcap. FIG. 4 is a partially cutaway front view showing a state in which an inner lid of the cap is covered with an upper lid. It is a partially cutaway front view showing a state in which an upper cap of the same cap is covered with an overcap. It is a partial cutaway perspective view showing the state where an upper cap in the cap is covered with an overcap. FIG. 9 is a partially cutaway perspective view showing a state in which the upper lid of the cap is covered with an overcap, and shows a state in which the guide fitting portion is starting to be fitted into the outer peripheral ridge portion. FIG. 6 is a partially cutaway perspective view showing a state in which the upper lid of the cap is covered with an overcap, and shows a state in which the deformable fitting portion is starting to be fitted to the outer peripheral concave-convex rib portion. It is sectional drawing which shows the state which covered the upper cap in the same cap, and shows the state which the guide fitting part and the deformation | transformation fitting part were fitted by the outer peripheral uneven | corrugated strip part. It is sectional drawing which shows the state which removed the removal part of the inside plug by the upper lid and overcap in the same cap. It is a top view which shows notionally the guide fitting part of the overcap in the same cap, and a deformation | transformation fitting part which fit in the outer peripheral uneven | corrugated stripe | line part (fitted part) of an upper lid.

Hereinafter, a cap according to an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1 and the like, reference numeral 1 is a cap attached to a container 2 in which contents (content liquid) are stored. The cap 1 is attached to the mouth portion 3 of the container 2, an upper lid 5 that can be attached to and detached from the inner stopper 4 by rotating, and is covered with the upper lid 5 in a fitted state to rotate in a circumferential direction. And an overcap 6 which is engaged with the upper lid 5 and is integrally rotatable when the above operation is performed. The inner plug 4, the upper lid 5, and the overcap 6 are manufactured by, for example, injection molding with synthetic resin, and have elastically deformable properties.

  As shown in FIGS. 2 and 3, the inner stopper 4 is provided so as to be detachable from the inner stopper main body 10 via the weakening portion 11 and the inner stopper main body 10 attached to the mouth 3 of the container 2. It has a detachment part 12. The inner plug body portion 10 includes a nozzle portion 16 protruding upward from the center (outer periphery of the weakened portion 11), a cylindrical outer cylinder portion 13 whose lower portion is fitted into the mouth portion 3 of the container 2 from the outside, and an outer cylinder. A cylindrical inner cylindrical portion 14 that is provided with a gap on the inner periphery of the portion 13 and has its lower portion fitted into the mouth portion 3 of the container 2 from the inside, and the upper end portions of the outer cylindrical portion 13 and the inner cylindrical portion 14, respectively. An upper surface portion 15 that extends radially inward at a location to connect the outer tubular portion 13 and the inner tubular portion 14 and the like, and protrudes in a stepped tubular shape above the inner peripheral end of the upper surface portion 15 and has a nozzle at the inner peripheral portion A step portion 17 and the like that are connected over the entire circumference are formed at a substantially central portion in the height direction of the portion 16.

  Below the outer cylindrical portion 13, a collar-shaped portion 18 that extends downward through the thin-walled portion 19A and that also protrudes radially outward and on the inner peripheral side is formed all around, and after use of the container 2 or the like, the collar-shaped portion 18 is formed. By cutting the brim-shaped portion 18 from the vertical thin-walled groove portion 19B and the thin-walled portion 19A formed at one place of the shaped portion 18, it is possible to easily remove the inner plug 4 and the like from the container 2. Further, on the outer periphery of the step portion 17 of the inner plug body portion 10, a screw portion 20 that is screwed into a screw portion 31 (see FIG. 1, FIG. 6 and the like) formed on the upper lid 5 to be described later is formed. Further, the stopper 15 that gradually rises up on the upper surface portion 15 of the inner plug body 10 and can come into contact with the regulating rib 44 (see FIG. 6) formed on the upper lid 5 to recognize the rotationally closed position of the upper lid 5. When the upper lid 5 is rotated up to a state immediately before closing, it is possible to make a sound and a sound is generated by being capable of contacting the portion 27 and the sound-repellent protrusion 47 (see FIGS. 5 and 6) formed on the upper lid 5 and protruding. The sound-repellent protrusions 28 are provided at a plurality of locations (two locations in this embodiment).

  The detaching part 12 of the inside plug 4 is a bottom wall part 21 that closes the inside of the weakening part 11 with the central part slightly recessed downward, and a part near the outer circumference of the bottom wall part 21 (a little inside the weakening part 11). (A location), and a detachable tubular portion 22 that extends in a tubular shape upward.

  The detachable tubular portion 22 includes a detachable inner protruding rib 25 extending vertically in a state of protruding radially inward and a detachable outer protruding rib 24 extending vertically in a state of protruding radially outward, respectively. A plurality is formed at each predetermined angle. In addition, in this embodiment, the disengagement inner side ribs 25 and the disengagement outer side ribs 24 are formed at every 60 degrees in the circumferential direction. The detached outer side ribs 24 may be formed at different angles. The inner release ribs 25 are formed on the outer circumference of the inner tubular portion 32 of the upper lid 5 at predetermined circumferential angles (every 60 degrees in the circumferential direction). As shown in FIGS. 5 and 6, the upper lid 5 can be engaged with the inner plug 4 when the upper lid 5 is rotated in a predetermined circumferential direction (eg, clockwise in plan view). Further, the detachment outer protrusion ribs 24 are formed on the inner periphery of the detachment outer tubular portion 34 of the upper lid 5 at predetermined circumferential angles (every 60 degrees in the circumferential direction in the present embodiment). The upper rib 5 can be engaged with the rib 35 (see FIGS. 5 and 6) when the upper lid 5 is rotated with respect to the inner plug 4 in a predetermined circumferential direction (clockwise in plan view).

  Further, as shown in FIG. 3, a concave portion 26 that is recessed radially inward is formed on the outer periphery of the distal end portion of the detaching tubular portion 22 of the inner plug 4, and correspondingly, shown in FIG. As described above, the convex portion 36 protruding inward in the radial direction is formed on the inner circumference of the base of the detaching outer cylindrical portion 34 of the upper lid 5, and when the upper lid 5 is screwed into the inner stopper 4 to a predetermined position, the inner stopper The concave portion 26 of No. 4 is configured to fit the convex portion 36 of the upper lid 5.

  As shown in FIG. 4 to FIG. 6 and the like, the upper lid 5 is provided with a substantially disc-shaped top plate portion 37 and a first inclined surface 38 a inclined obliquely downward from the outer peripheral edge of the top plate portion 37. The upper wall surface portion 38 that hangs down from the outer peripheral edge of the first inclined surface portion 38a, the step portion 39 that is recessed stepwise from the upper side surface portion 38 and expands radially outward, and the first inclined surface portion 38a that is inclined obliquely downward from the outer peripheral edge of the step portion 39. The second inclined surface portion 40, the cylindrical lower side wall surface portion 41 that hangs from the outer peripheral edge of the second inclined surface portion 40, and the recessed portion of the step portion 39 (that is, a portion inside the lower side wall surface portion 41) hang downward. A cylindrical upper lid cylindrical portion 42, and a nozzle seal formed on the inner peripheral side of the upper lid cylindrical portion 42 and hanging from the top plate portion 37 to come into contact with the inner periphery of the tip end portion of the nozzle portion 16 of the inner plug 4 for sealing. And the top plate portion 37 of the nozzle sealing cylinder portion 43. And detaching outer cylindrical portion 34 depending from the periphery portion, with a like leaving in-cylinder unit 32 for further depending from the inner peripheral side portion of the top plate portion 37 than the detaching outer tubular portion 34.

  The lower end of the upper lid cylindrical portion 42 can come into contact with the upper surface portion 15 of the inner stopper 4 from above when the upper lid 5 is covered with the inner stopper 4, and the screw of the inner stopper 4 is provided on the inner periphery of the upper lid cylindrical portion 42. A screw portion 31 that is screwed into the portion 20 is formed. When the upper lid 5 is put on the inner stopper 4, the nozzle sealing cylinder portion 43 comes into close contact with the nozzle portion 16 of the inner stopper 4 from the inner peripheral side, and when the upper lid 5 is attached, the contents in the container 5 leak. Seal it so that it does not come out.

  As described above, the outer cylinder portion 34 for disengagement of the upper lid 5 is disengaged as a rotary engaging portion on the inner circumference at every predetermined angle in the circumferential direction (as described above, at every 60 degrees in the circumferential direction in this embodiment). A plurality of outer cylinder protruding ribs 35 for use are formed, and a convex portion 36 protruding to the inner peripheral side is formed at the base of the outer cylinder protruding rib 35 for removal of the upper lid 5. Further, as described above, the detachable inner cylinder portion 32 of the upper lid 5 serves as a rotary engagement portion at a predetermined circumferential angle on the inner circumference (as described above, at every 60 degrees in the circumferential direction in this embodiment). A plurality of inner cylinder protruding ribs 33 for detachment are formed. When the upper lid 5 is put on the inner plug 4, the detaching tubular portion ribs 35 of the upper lid 5 are fitted into the detaching tubular portion 22 of the detaching portion 12 of the inner stopper 4 from the outside in the radial direction. 5 is fitted in from the inner side in the radial direction, and is formed in the concave portion 26 formed in the detaching portion 12 of the inner plug 4 at the base of the outer tubular rib 35 for detaching in the upper lid 5. The formed convex portion 36 is fitted.

  Further, on the inner circumference of the lower side wall surface portion 41 of the upper lid 5, there are provided a plurality of regulation ribs 44 in the circumferential direction that can come into contact with the stopper portion 27 of the inner stopper 4 when the upper lid 5 is completely closed with respect to the inner stopper 4. It is provided at two places (two places in this embodiment). Further, on the outer periphery of the upper lid cylindrical portion 42 of the upper lid 5, when the upper lid 5 is completely closed with respect to the inner plug 4, the sound-repellent protrusion that comes into contact with the sound-repellent protrusion 28 of the inner plug 4 to be deformed and emit a sound. 47 are provided at a plurality of locations in the circumferential direction (two locations in this embodiment).

  As shown in FIGS. 4 and 5, the lower side wall surface portion 41 of the upper lid 5 projects radially outward (in this embodiment, it projects radially outward so as to have a saw blade shape in plan view). A plurality of outer peripheral ridge-and-groove portions (so-called knurls) 45 as the fitted portion are continuously formed in the circumferential direction, and a flange portion that spreads outward in a flange shape at the lower end portion of the lower side wall surface portion 41. 46 is formed. In addition, in this embodiment, an inclined surface 46a is formed on the upper portion of the flange portion 46 so as to gradually expand radially outward (radially outward) from the lower side wall surface portion 41.

  Here, the outer peripheral concave-convex ridge portion 45 as the fitted portion formed on the lower side wall surface portion 41 of the upper lid 5 is formed so as to be concave and convex at a constant angle in the circumferential direction. The concavo-convex portions are continuously formed in a concavo-convex shape (valleys and peaks) at a predetermined angle in the circumferential direction, for example, at an angle of 8 degrees (so-called pitch of 8 degrees). Further, the outer peripheral concave-convex strip portion 45 is fitted (fitted) into a fitting portion 54, which will be described later, provided on the overcap 6.

  As shown in FIG. 1, FIG. 7, FIG. 8 and the like, the overcap 6 includes a cover portion 51 that covers the upper lid 5, an intermediate tubular portion 52 that extends downward from the inside of the upper portion of the cover portion 51 in a tubular shape. A plurality of holding legs 53 that can further hold the upper lid 5 by further extending downward from the middle tubular portion 52 (that is, extending downward from the cover portion 51 via the middle tubular portion 52), and the middle barrel. A plurality of fitting portions 54 that protrude radially inward from the portion 52 and fit into the outer protruding ridge portion 41 of the upper lid 5, and downward from a position on the inner side of the middle tubular portion 52 inside the upper portion of the cover portion 51. When the overcap 6 extends in a tubular shape and is covered by the upper lid 5, an inner tubular portion 55 and the like are formed which are fitted to the upper wall surface portion 38 of the upper lid 5 from the outer periphery and contact the step 39 from above. . In addition, in this embodiment, the cover portion 51 is composed of a flat disk-shaped top surface portion 51A and an outer peripheral surface portion 51B extending downward from the outer peripheral edge of the top surface portion 51A in a cylindrical shape. Although the diameter is larger than the diameters of the upper lid 5 and the inner plug 4, the cover portion 51 is not limited to such a shape, and the top surface portion 51A and the outer peripheral surface portion 51B are gently curved via the inclined surface or the curved surface. It may be a shape connected to.

  Further, cutout groove portions 55 are provided at appropriate angles in the circumferential direction in a region below the middle tubular portion 52, and a portion between these cutout groove portions 55 serves as a holding foot portion 53. Since the notch groove portion 55 is provided between the adjacent holding foot portions 53, the holding foot portion 53 can be elastically deformed in the radial direction in a plan view. Further, as shown in FIG. 7, FIG. 9, FIG. 11, etc., the lower end portion of the holding foot portion 53 projects radially inward and is deformed radially outward when moved downward with respect to the upper lid 5. Thus, an inner projecting portion 53a is formed which can ride over the flange portion 46 of the upper lid 5 and which, when riding over the flange portion 46, locks the flange portion 46 from below.

  Here, the fitting portion 54 of the overcap 6 is provided such that the separation angle in the circumferential direction adjacent to each other is an integer multiple of the angle at which the outer peripheral concave-convex line portion 45 as the fitted portion is provided. The plurality of guide fitting parts 54A that are present and the separation angle in the circumferential direction with respect to the guide fitting parts 54A are provided at an angle different from an integer multiple of the angle at which the outer peripheral concave-convex line parts 45 are provided. It is composed of a deformable fitting portion 54B which is fitted to the uneven strip portion 45 while elastically deforming in the circumferential direction.

  In this embodiment, as shown in FIG. 8, the guide fitting portions 54A and the deformable fitting portions 54B are alternately provided at intervals of 60 degrees in the circumferential direction when viewed from below (and viewed from above from above). Has been. Therefore, the spacing angle (120 degrees in this embodiment) in the circumferential direction between the guide fitting portions 54A that are adjacent to each other is the angle at which the outer peripheral concave-convex line portions 45 that are adjacent to each other are provided (8 in this embodiment). The angle is an integral multiple of (degrees) (15 times in this embodiment). On the other hand, in the deformable fitting portion 54B, the adjacent guide fitting portions 54A have a circumferential separation angle of 60 degrees, and an integer (8 degrees in this embodiment) at which the outer peripheral concave-convex line portion 45 is provided. It is provided at an angle different from the double angle (in this embodiment, an angle of 7.5 times).

  Further, as shown in FIG. 7, FIG. 9, FIG. 11, FIG. 14 to FIG. 19, etc., with the top surface portion 51A of the overcap 6 arranged so as to face upward, the lower end portion of the guide fitting portion 54A is It is formed at a position lower than the lower end of the deformation fitting portion 54B. In this embodiment, both the guide fitting portion 54A and the deformation fitting portion 54B are formed so as to extend downward in a rib shape from the lower surface of the top surface portion 51A of the overcap 6 along the inner wall surface of the middle tubular portion 52. However, the guide fitting portion 54A is formed so as to extend vertically from the middle tubular portion 52 to the holding foot portion 53, while the deformation fitting portion 54B is not formed in the holding foot portion 53. It is formed so as to extend vertically in the vertical range in which the middle tubular portion 52 is provided. If the lower end portion of the guide fitting portion 54A is formed at a position lower than the lower end portion of the deformation fitting portion 54B, only the guide fitting portion 54A is required to be held from the middle tubular portion 52 to the holding foot portion. It may not be formed in 53. That is, it suffices that the lower end portion of the guide fitting portion 54A is formed at a position lower than the lower end portion of the deformation fitting portion 54B, and not only the guide fitting portion 54A but also the deformation fitting portion 54B is the middle tubular portion. 52 is formed in the holding foot portion 53, or neither the guide fitting portion 54A nor the deformation fitting portion 54B is formed in the holding foot portion 53 but only in the middle tubular portion 52. Good. Further, as shown in FIG. 12, an inclined surface 56B is formed at the tip (lower end) of the deformable fitting portion 54B so that the tip (lower end) becomes thinner in the circumferential direction. Further, in this embodiment, as shown in FIG. 10, the tip end (lower end) of the guide fitting portion 54A is also provided with an inclined surface 56A such that the thickness becomes smaller in the circumferential direction toward the tip (lower end). ing. It should be noted that a connection portion between the inclined surfaces 56A and 56B and the tip portion, a linear portion of the inclined surfaces 56A and 56B and the guide fitting portion 54A and the deformation fitting portion 54B (a linear portion above the inclined surfaces 56A and 56B), and It is preferable that the connecting portion of (1) is formed in a curved shape having a large radius of curvature so as to connect smoothly, but the connecting portion is not limited to this.

  When the overcap 6 is assembled to the upper lid 5, the overcap 6 is capped along the axial direction X (see FIG. 14) orthogonal to the upper lid 5 in the circumferential direction (for example, above the upper lid 5). The guide fitting portion 54A of the over cap 6 is fitted into the outer peripheral concave-convex ridge portion (fitted portion) 45 of the upper lid 5 at the time of this stoppering. After that (see FIG. 15), the deformable fitting portion 54B is configured to fit into the fitted portion (see FIGS. 16 and 17).

Next, an operation including a procedure for assembling the inner plug 4, the upper lid 5, and the overcap 6 in the cap 1 in the above configuration will be described.
First, a procedure for assembling the inner plug 4 and the upper lid 5 in the cap 1 will be described. After the inner stopper 4 and the upper lid 5 are separately manufactured, the upper lid 5 is moved downward with respect to the inner stopper 4 as shown in FIG. 13 in an unused state in which the detaching portion 12 is provided in the inner stopper main body 10. (That is, moving in a direction in which they are combined with each other along the axial direction X of the cap 1) to attach the upper lid 5 to the inner plug 4. At this time, a jig (not shown) is fitted inside the inner plug 4, and the upper lid 5 is tapped (dried) downward from above the inner plug 4.

  As a result, in the lower region of FIG. 14, the nozzle of the upper lid 5 is shown so as to show the state in which the inner stopper 4 and the upper lid 5 are assembled (however, FIG. 14 shows the assembled state of the overcap 6 after this). The sealing cylinder portion 43 is inserted inside the upper portion of the nozzle portion 16 of the inner plug 4, and the top plate portion 37 of the upper lid 5 contacts the upper end surface of the detaching portion 12 (the upper end portion of the detaching tubular portion 22). Further, the threaded portion 31 of the upper lid 5 rides over the threaded portion 20 of the inner plug 4, and the detaching tubular portion 22 enters between the detaching inner tubular portion 32 and the detaching outer tubular portion 34 of the upper lid 5 to come out. 12 is held, and the convex portion 36 provided on the base portion of the detaching outer tubular portion 34 of the upper lid 5 is fitted into the concave portion 26 provided on the distal end portion of the detaching tubular portion 22. Further, the detaching inner cylindrical ribs 33 of the upper lid 5 are inserted between the detaching inner protruding ribs 25 of the inner plug 4, and the detaching outer cylindrical ribs 35 of the upper lid 5 are detached outer protruding ribs of the inner plug 4. It is inserted between the ribs 24, and the upper lid 5 is attached to the inner plug 4 in this state.

  At this time, as shown in the lower region of FIG. 1 and FIG. 14, the top plate portion 36 of the upper lid 5 abuts on the upper end surface of the detaching portion 12, and the lower end portion of the upper lid cylindrical portion 42 has an inner stopper. 4, the inner cylinder ribs 33 for detaching the upper lid 5 are excessively inserted between the inner ribs 25 on the inner side of the inner plug 4, or the outer ribs for detaching the upper lid 5 are separated. 35 is not excessively inserted between the detaching outer side protruding ribs 24 of the inner plug 4, and the tips of the inner releasing ribs 33 and the outer releasing ribs 35 come into contact with the weakened portion 11. Will not break.

  Next, after the inner plug 4 to which the upper lid 5 is attached is stoppered and attached to the mouth portion 3 of the container 2, as shown in FIG. 14, an overcap is applied to the upper lid 5 to which the inner stopper 4 is assembled. 6 is moved downward (that is, in the direction in which the upper lid 5 and the overcap 6 are combined with each other along the axial direction X of the cap 1), and the overcap 6 is attached to the upper lid 5. At this time, the overcap 6 is capped (driven) downward from above the upper lid 5.

  As a result, as shown in FIG. 15, first, the inclined surface 56A formed at the tip end portion of the guide fitting portion 54A of the overcap 6 comes into contact with the outer peripheral concave-convex line portion (fitted portion) 45 of the upper lid 5, etc. Then, while the relative positions of the upper lid 5 and the overcap 6 in the circumferential direction of each other are determined (while being guided), the guide fitting portion 54A of the overcap 6 allows the outer peripheral concave-convex ridge portion (fitted portion) of the upper lid 5 to be fitted. ) Fitting while being inserted between 45. Further, when the overcap 6 is further stoppered (driven) downward from above the upper lid 5, as shown in FIG. 16, the inclined surface 56B formed at the tip of the deformable fitting portion 54B of the overcap 6 becomes the upper lid. 5, the deformation fitting portion 54B of the overcap 6 is inserted between the outer peripheral ridge-ridge portions (fitted portions) 45 of the upper lid 5 while being fitted. To meet. Then, when the overcap 6 is further stoppered (driven) downward from above the upper lid 5, as shown in FIGS. 17 and 18, the inner protruding portion 53a formed on the holding foot portion 53 of the overcap 6 is covered with the upper lid 5. 5, the flange portion 46 is overcome, and the flange portion 46 is locked from below.

  That is, as shown in FIGS. 14 and 15, when the overcap 6 is capped and assembled to the upper lid 5, in the first step, a separation angle in the circumferential direction between the guide fitting portions 54A adjacent to each other (so-called). Only the guide fitting portion 54A having a circumferential pitch that is an integer multiple of the angle at which the outer peripheral concave-convex rib portion 45 that is the fitted portion is provided (the circumferential pitch of the outer peripheral concave-convex rib portion 45). Since it fits into the outer peripheral concave-convex line portion (fitted portion) 45 (see FIG. 20), the frictional force at this time can be minimized and the stopper can be tapped with a relatively small force.

  Further, in the deformable fitting portion 54B of the overcap 6, the angle of separation from the guiding fitting portion 54A is the angle at which the outer peripheral concave-convex rib portion 45 that is the fitted portion is provided (the circumferential direction of the outer peripheral concave-convex rib portion 45). Although it is provided at an angle different from an angle that is an integral multiple of the pitch), when the deformable fitting portion 54B is fitted to the outer peripheral concave-convex strip portion 45 which is the fitted portion of the upper lid 5, the guide fitting is already performed. Since the mating portion 54A is fitted to the outer peripheral ridge-and-groove portion 45 and the overcap 6 and the upper lid 5 are held (positioned) in a mutually immovable manner in the circumferential direction, the increase in the tapping force is minimized. Even in the state of being suppressed to, the deformable fitting portion 54B can be fitted into the outer peripheral uneven line portion (fitted portion) 45 of the upper lid 5 while deforming in the circumferential direction of the cap 1 (FIG. 16, FIG. 17, FIG. 20), it is possible to keep the force required for tapping low. It made. Further, since the deformable fitting portion 54B of the overcap 6 is elastically deformed and fitted into the outer peripheral concave-convex ridge portion (fitted portion) 45 of the upper lid 5, the deformable fitting portion 54B is fitted with a relatively large force. 6, the upper lid 5 can be satisfactorily held without falling off.

  Further, finally, since the inner protruding portion 53a formed on the holding foot portion 53 of the overcap 6 gets over the flange portion 46 of the upper lid 5 and locks the flange portion 46 from below, the holding portion of the overcap 6 is held. Even with the foot portion 53, the upper lid 5 can be held in a good state in which it does not fall off. In addition, in this embodiment, the inclined surface 46a is formed on the flange portion 46 of the upper lid 5, and the inclined surface is formed below the inner protruding portion 53a of the overcap 6, which also allows the overcap to be formed. The inner projecting portion 53a of 6 is designed to be able to satisfactorily get over the flange portion 46 of the upper lid 5.

  Then, in this state, when the overcap 6 is rotated around the axis (in this embodiment, the overcap 6 is rotated counterclockwise with respect to the upper lid 5 in plan view), the overcap 6 is fitted. The guide fitting portion 54A and the deformation fitting portion 54B, which are the joining portion 54, come into contact with the outer peripheral concave-convex ridge portion (fitted portion) 45 of the upper lid 5, and the upper lid 5 is integrally rotated together with the overcap 6, and The detaching inner cylindrical ribs 33 and the detaching outer cylindrical ribs 35 of the upper lid 5 come into contact with the inner detaching ribs 25 and the outer detaching ribs 24 of the inner plug 4, and together with the upper lid 5, The detaching part 12 is also rotated integrally. As a result, the weakened portion 11 of the inner plug 4 can be cut to detach the detaching portion 12 from the inner plug main body portion 10, and the pouring port 29 (see FIG. 19) can be formed in the inner plug 4. At this time, since the overcap 6 having a large diameter is rotated, it is possible to reduce the rotational force required for opening. That is, even if the cutting distance of the weakened portion 11 and thus the opening area of the spout 29 (see FIG. 19) is relatively large, it is possible to perform cutting without applying a large force, which is convenient.

  Further, in the above configuration, since the inclined surface 56B is formed at the tip of the deformation fitting portion 54B such that the circumferential dimension becomes smaller toward the tip, this allows the deformation fitting portion 54B to be compared with each other when tapping. The upper cap 5 can be smoothly inserted into the outer peripheral concave-convex ridges (fitted parts) 45 while being elastically deformed in the circumferential direction (fitting). It is possible to suppress the force required when assembling by plugging it to a lower level.

  Further, in the above configuration, the inclined surface 56A is formed at the tip of the guide fitting portion 54A so that the circumferential dimension becomes smaller toward the tip. Therefore, the guide fitting portion at the time of tapping is formed. 54A can be smoothly inserted (fitted) between the outer peripheral concave-convex ridges (fitted portions) 45 of the upper lid 5, and also when the overcap 6 is assembled by tapping the upper lid 5 or the like. It is possible to reduce the power required for

  In this way, the upper lid 5 can be satisfactorily held even if the force at the time of tapping is suppressed to the minimum, so the reliability in the tapping step can be improved.

  Further, in the above-described embodiment, the holding foot portion 53 that extends downward from the cover portion 51 and is elastically deformed in the radial direction to hold the upper lid 5 is provided. Therefore, by covering the upper lid 5 with the overcap 6, the upper lid 5 can be held by the holding foot portion 53, and the upper lid 5 can be held by the overcap 6 more reliably. The property can be further improved.

  It should be noted that in the above-described embodiment, the outer peripheral concave-convex line portions 45 as fitted portions are provided at every 8 degrees in the circumferential direction, and the guide fitting portion 54A and the deformable fitting portion 54B are circumferentially at 60 degrees. Although the case where it is provided for each of the above is not limited to this, the outer peripheral concave-convex strip portion 45 as the fitted portion is provided at an angle smaller than 8 degrees or a large angle in the circumferential direction. A plurality of guide fitting portions 54A, in which the portions 54 are adjacent to each other in the circumferential direction at an angle that is an integral multiple of the angle at which the fitted portion is provided, and the guide fitting portions. A separation angle in the circumferential direction with respect to 54A is provided at an angle different from an angle that is an integral multiple of the angle at which the fitted portion is provided, and is set in the circumferential direction with respect to the outer peripheral uneven line portion 45 as the fitted portion. It suffices if the configuration includes a deformable fitting portion 54B that fits while elastically deforming.

  Further, in the above-described embodiment, since the cover 51 of the overcap 6 is provided with the top surface portion 51A having a flat upper surface portion, when the cap 1 is opened and the upper lid 5 and the overcap 6 are removed from the container 2. In addition, there is an advantage that the overcap 6 can be stably placed on a table or the like. However, the present invention is not limited to this, and the upper surface portion of the cover 51 may be formed in a hemispherical shape.

  Further, in the above embodiment, the case where the guide fitting portion 54A and the deformation fitting portion 54B are provided at the location where the middle tubular portion 52 and the holding foot portion 53 are provided has been described. The present invention is not limited to this, and the middle tubular portion 52, the holding foot portion 53, the guide fitting portion 54A, and the deformation fitting portion 54B may be separately provided.

  Further, in the above-described embodiment, in the case where the upper lid 5 is provided with the outer peripheral concave-convex ridge portion 45 as the fitted portion, and the overcap 6 is provided with the guide fitting portion 54A or the deformation fitting portion 54B as the fitting portion. However, conversely, the overcap 6 may be provided with the concave-convex strip portion as the fitted portion, and the upper lid 5 may be provided with the guide fitting portion or the deformable fitting portion as the fitting portion. .

DESCRIPTION OF SYMBOLS 1 Cap 2 Container 3 Mouth part 4 Inner plug 5 Upper lid 6 Overcap 10 Inner plug body part 11 Weakened part 12 Detachment part 16 Nozzle part 20, 31 Screw part 33 Inner cylinder rib for release (rotational engagement part)
35 Detachable outer cylinder rib (rotational engagement part)
45 Peripheral uneven ridges (fitted parts)
51 Covering Part 53 Holding Foot Part 54 Fitting Part 54A Guide Fitting Part 54B Deformation Fitting Part 56A, 56B Slope

Claims (5)

An inner stopper attached to the mouth of the container, an upper lid that can be attached to and detached from the inner stopper by rotating, and an overcap that is fitted in the upper lid and is rotatable integrally.
The inner plug has an inner plug body portion and a detaching portion detachably provided from the inner plug body portion via a weakening portion,
A cap, wherein the upper lid is provided with a rotary engaging portion that engages with the detaching portion of the inner stopper when the upper lid is rotated and disengages the detaching portion from the inner stopper main body.
The upper lid and the overcap are provided with a fitted portion and a fitting portion that can be fitted to each other,
The fitted portion is formed in an uneven shape on the outer circumference of the upper lid or the inner circumference of the overcap at predetermined angles with respect to the circumferential direction,
The fitting portion is provided with a plurality of guide fitting portions, which are adjacent to each other in a circumferential direction at an angle that is an integral multiple of the angle at which the fitted portion is provided, and the guide fitting portion. The angle of separation in the circumferential direction with respect to the fitting portion is provided at an angle different from an integer multiple of the angle at which the fitting portion is provided, and the fitting portion is elastically deformed in the circumferential direction to fit the fitting portion. A cap having a deformable fitting portion. The fitted portion is formed on the upper lid,
The fitting portion is formed on the overcap,
The lower end portion of the guide fitting portion is formed at a position lower than the lower end portion of the deformation fitting portion in a state in which the top surface portion of the overcap is arranged to face upward. The cap according to Item 1. The fitting portion and the fitted portion are formed in a shape extending along a linear direction orthogonal to the circumferential direction in the upper lid and the overcap,
The cap according to claim 1 or 2, wherein an inclined surface is formed at a tip portion of the deformable fitting portion such that a circumferential dimension thereof becomes smaller toward the tip.   The overcap is provided with a cover portion to cover the upper lid, and a holding foot portion that extends downward from the cover portion and elastically deforms in the radial direction to hold the upper lid. The cap according to any one of 3 above. A method of assembling a cap according to any one of claims 1 to 4, wherein an overcap is assembled to an upper lid,
Assemble by capping the overcap along the axial direction orthogonal to the circumferential direction with respect to the upper lid,
A method of assembling a cap, characterized in that the guide fitting part is fitted to the fitted part and then the deformable fitting part is fitted to the fitted part at the time of capping.

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