WO2014132800A1 - 中栓と蓋本体とから構成された容器蓋 - Google Patents
中栓と蓋本体とから構成された容器蓋 Download PDFInfo
- Publication number
- WO2014132800A1 WO2014132800A1 PCT/JP2014/053253 JP2014053253W WO2014132800A1 WO 2014132800 A1 WO2014132800 A1 WO 2014132800A1 JP 2014053253 W JP2014053253 W JP 2014053253W WO 2014132800 A1 WO2014132800 A1 WO 2014132800A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wall
- inner plug
- lid
- lid body
- outer peripheral
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/36—Closures with frangible parts adapted to be pierced, torn, or removed, to provide discharge openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
- B65D39/0052—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in more than one piece
- B65D39/0076—Plastic closures other than those covered by groups B65D39/0058 - B65D39/007
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
- B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
- B65D47/0833—Hinges without elastic bias
- B65D47/0838—Hinges without elastic bias located at an edge of the base element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
- B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
- B65D51/22—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure
- B65D51/228—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being removed from the container after the opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0006—Upper closure
- B65D2251/0025—Upper closure of the 47-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0068—Lower closure
- B65D2251/0087—Lower closure of the 47-type
Definitions
- the present invention relates to a container lid composed of a synthetic resin inner stopper attached to the mouth and neck of the container and a synthetic resin lid main body attached to the inner stopper.
- Patent Document 1 discloses a container lid composed of a synthetic resin inner stopper attached to the mouth and neck of the container and a synthetic resin lid main body attached to the inner stopper.
- the inner plug includes a circular obstruction wall and a cylindrical attachment wall connected to the outer peripheral edge of the obstruction wall, and is attached to the mouth and neck of the container by fitting the attachment wall to the outer peripheral surface of the mouth and neck of the container.
- the obstruction wall occludes the mouth and neck of the container.
- the lid body includes a circular cover wall and a fitting wall connected to the outer peripheral surface of the cover wall, and female threads formed on the inner peripheral surface of the fitting wall are formed on the outer peripheral surface of the inner plug mounting wall.
- a breakable thin line that defines a ball-shaped removal area is formed on the closing wall of the inner plug, and a key-like locked piece that extends upward from the removal area is formed.
- a key-like locking piece that is locked to the locking piece of the inner plug is formed on the lower surface of the cover wall of the lid body.
- the lid body When the lid body is attached to the inner plug as required, when the lid body is rotated counterclockwise (in the direction to remove the lid body from the inner plug) when viewed from above, the lid body A force is applied to the removal region of the inner plug through the locking piece and the stoppered piece of the inner plug, the breakable thin line is broken and the removal region is removed from the blocking wall, and thereby a passage opening is formed in the blocking wall. Generated.
- the present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is a new and improved container capable of generating a passage opening in the closed wall of the inner plug without generating so-called scrap pieces. To provide a lid.
- Another technical problem of the present invention is to provide a new and improved container lid capable of sufficiently breaking a breakable thin-wall line as required, in addition to solving the above-mentioned main technical problems. is there.
- the present inventor has found that the main technical problem can be achieved by making the breakable line formed on the closed wall of the inner plug into a unique shape.
- the inner plug includes a circular blocking wall and a cylindrical mounting wall connected to the outer peripheral edge of the blocking wall, and is fitted to the mouth and neck of the container by fitting the mounting wall to the outer peripheral surface of the mouth and neck of the container
- the occlusion wall occludes the mouth and neck of the container
- the lid body includes a circular covering wall and a cylindrical fitting wall connected to the outer peripheral edge of the covering wall, and the inner plug is fitted to the outer peripheral surface of the mounting wall of the inner plug.
- the cover wall is located above the blocking wall of the inner plug, At least one breakable thin line is formed on the closing wall of the inner plug, and the breakable thin line includes an outer arcuate portion extending from the break start end and an inner arcuate portion extending from the break start end.
- Locked means are attached to the deformation region, At least one discharge opening is formed in the cover wall of the lid body, and locking means for cooperating with the locked means is disposed on the lower surface of the cover wall,
- the locking means When the lid main body is mounted on the inner plug, the locking means is positioned upstream of the locked means when viewed in a predetermined direction, and the lid main body is rotated in the predetermined direction with respect to the inner plug.
- the locking means are locked to the locked means, and when the lid body is further rotated in the predetermined direction with respect to the inner plug, the deformation is caused via the locking means and the locked means.
- a force is applied to the region, the breakable thin line of the inner plug is broken and the deformation region is deformed, thereby creating a passage opening in the closure wall of the inner plug;
- a container lid is provided.
- the locked means is composed of a locked piece extending upward from the upstream end of the deformation region when viewed in the predetermined direction and then extending radially inward,
- Each of the locking means is constituted by a locking piece extending downward from the lower surface of the covering wall and then extending in the predetermined direction.
- each of the locked pieces is composed of a column portion extending vertically upward from the upstream end portion of the deformation region and a protruding beam portion extending horizontally inward in the radial direction from the upper end portion of the column portion.
- a common column extending upward from the center of the upper surface is disposed on the blocking wall of the inner plug, and the radially inner end of each of the projecting beam portions of the locked piece is interposed through the common column.
- Each of the locking pieces is preferably composed of a hanging column portion extending downward from the lower surface of the covering wall and a projecting portion extending in an arc shape from the lower end portion of the hanging column portion in the predetermined direction.
- the cover wall of the lid body is formed with two or three discharge openings corresponding to the deformation region, and in the plan view, each of the protrusions is entirely within the discharge opening.
- At least one positioning groove is formed on one of the outer peripheral surface of the mounting wall of the inner plug and the inner peripheral surface of the fitting wall of the lid body, and at least one positioning protrusion is formed on the other. It is advantageous that the relative angular position of the lid body with respect to the inner plug is regulated by inserting the positioning protrusion into the positioning groove and mounting the lid body on the inner plug. .
- the outer arc-shaped portion and the inner arc-shaped portion of the breakable thin-walled line formed in the closing wall of the inner plug extend from the break starting end portion in a counterclockwise direction when viewed from above,
- the predetermined direction is counterclockwise when viewed from above.
- the inner stopper and the lid main body are provided with a rotation preventing means that cooperates with each other to prevent the lid main body from rotating in a direction opposite to the predetermined direction with respect to the inner stopper. It is preferable.
- the locking means is locked to the locked means, and the inner plug, the lid main body,
- the lid body is rotated by an angle ⁇ (0 degree ⁇ ⁇ ⁇ 20 degrees) smaller than the angle ⁇ by 0 to 20 degrees with respect to the inner plug
- return rotation preventing means for preventing the lid body from rotating in the opposite direction to the predetermined direction is provided.
- the inner plug and the lid main body are provided with a rotation limiting means that cooperates to limit the rotation of the lid main body with respect to the inner plug in the predetermined direction to an angle ⁇ of 300 to 320 degrees. Is preferred.
- the lid body when the lid body is rotated by the angle ⁇ in the predetermined direction with respect to the inner plug, the lid body cooperates with the inner plug to the inner plug. It is preferable that reverse rotation prevention means for preventing rotation in a direction opposite to the predetermined direction is provided.
- At least the upstream portion of the deformation region is gradually inclined upward toward the upstream as viewed in the predetermined direction.
- the central main portion of the blocking wall extends horizontally except at least the upstream portion of the deformation region and the vicinity thereof, and the deformation region is the center from the downstream end to the upstream as viewed in the predetermined direction.
- the breakable thin wall that extends horizontally along the horizontally extending portion of the main portion and then extends upwardly to the upstream end, and the central main portion of the blocking wall defines the deformation region.
- a vertically extending raised surface is preferably formed adjacent to the break starting end of the line and the upstream portion of the outer and inner arcuate portions.
- the mounting wall of the inner plug is formed with an annular shoulder surface facing upward, and an outer peripheral surface of the mounting wall located below the annular shoulder surface is the annular shoulder surface.
- the fitting wall of the lid body is fitted to a portion above the annular shoulder surface of the mounting wall, and is located radially outward from the outer peripheral surface located above the wall.
- At least the lower part of the outer peripheral surface of the fitting wall and the outer peripheral surface below the annular shoulder surface of the mounting wall are provided with corresponding shape deforming portions and / or printing, respectively, The relative relationship of the corresponding shape deforming portion or printing in a state where the lid body is mounted as required is changed when the lid body is rotated with respect to the inner plug. It is clearly shown that the lid body has been rotated.
- At least a lower portion of the outer peripheral surface of the fitting wall of the lid main body, and an outer peripheral surface below the annular shoulder surface of the mounting wall of the inner plug Is conveniently substantially flush.
- An outer lid is provided at the upper end of the outer peripheral surface of the mounting wall of the lid body via a hinge means between a closed position that covers the cover wall of the lid body and an open position that exposes the cover wall of the lid body.
- two specified parts having a width of 30 to 100 degrees in the circumferential direction with a portion having an angular interval of 90 degrees from the circumferential center of the hinge means to both sides in the circumferential direction.
- each of the regions it extends in the axial direction continuously over at least the lower part of the outer peripheral surface of the fitting wall and the outer peripheral surface below the annular shoulder surface of the mounting wall, and forms the corresponding shape deforming portion It is preferable that at least one protrusion is disposed.
- the number and / or width of the ridges disposed on one of the two specific areas is different from the number and / or width of the ridges disposed on the other.
- An outer lid is provided at the upper end of the outer peripheral surface of the mounting wall of the lid body via a hinge means between a closed position that covers the cover wall of the lid body and an open position that exposes the cover wall of the lid body.
- two specified parts having a width of 30 to 100 degrees in the circumferential direction with a portion having an angular interval of 90 degrees from the circumferential center of the hinge means to both sides in the circumferential direction.
- it extends continuously in the axial direction over the lower portion of the outer peripheral surface of the fitting wall and the outer peripheral surface below the annular shoulder surface of the mounting wall, and forms at least the corresponding shape deforming portion.
- one flat surface is provided.
- the number and / or width of the flat surfaces arranged in one of the two specific areas is different from the number and / or width of the flat surfaces arranged in the other. It is desirable that an additional flat surface extending radially inward from the upstream edge of the flat surface is attached to the upstream edge of the flat surface when viewed in the predetermined direction.
- the inner plug is closed by simply rotating the lid body in a predetermined direction with respect to the inner plug without causing a sanitary problem by bringing a finger into contact with the closing wall of the inner plug.
- the passage opening of the inner plug is created by deforming the deformation area (without separating it from the closure wall), so that so-called debris is not generated.
- Two or three breakable thin lines are formed at equal intervals in the circumferential direction on the closing wall of the inner plug, and two or three deformation areas are defined at equal intervals in the circumferential direction.
- the locked means is composed of locked pieces that extend upward from the upstream end of the deformation region when viewed in a predetermined direction and then extend radially inward, and each of the locking means is formed from the lower surface of the covering wall.
- FIG. 6 is a bottom view of the lid body shown in FIG. 5.
- FIG. 6 is a cross-sectional view of the lid main body shown in FIG. 5 along the line BB shown in FIG.
- FIG. 6 is a perspective view showing a part of the lid main body shown in FIG. 5.
- FIG. 9 is a cross-sectional view showing a state in which the lid main body shown in FIGS. 5 to 8 is attached to the inner plug shown in FIGS. 1 to 4 as required. From the state shown in FIG. 9, the lid body is rotated counterclockwise by a predetermined angle with respect to the inner plug as viewed from above, and the breakable thin wall line of the inner plug is broken to deform the deformation area to generate a passage opening. Sectional drawing which shows the state which carried out. The top view which shows the modification of the inner stopper in the synthetic resin container lid comprised according to this invention.
- FIG. 12 is a cross-sectional view of the inner plug shown in FIG. 11 along the line AA shown in FIG.
- FIG. 12 is a perspective view of the inner plug shown in FIG. 11.
- FIG. 12 is a cross-sectional view of the inner plug shown in FIG. 11 along the line AA shown in FIG.
- FIG. 14 is a cross-sectional view showing a state in which the lid main body shown in FIGS. 5 to 8 is attached to the inner plug shown in FIGS. 11 to 13 as required. From the state shown in FIG. 14, the lid body is rotated counterclockwise by a predetermined angle with respect to the inner plug when viewed from above, the breakable thin wall line of the inner plug is broken, and the deformation area is deformed to generate a passage opening. Sectional drawing which shows the state which carried out.
- the top view of the inner stopper shown in FIG. The slope view of the inner stopper shown in FIG.
- FIG. 19 is a front view showing a state in which the lid main body shown in FIGS. 19 and 20 is attached to the inner plug shown in FIGS. 16 to 18 as required.
- FIG. 22 is a front view showing a state in which the lid body is rotated by a predetermined angle in the counterclockwise direction when viewed from above with respect to the inner plug from the state illustrated in FIG. 21.
- the front view of the state which attached the cover main body to the inner stopper as needed which shows the modification of a shape deformation part.
- FIG. 24 is a plan view of the inner plug and the lid body shown in FIG. 23.
- the top view which shows the state which attached the cover main body to the inner stopper as needed, which shows the other modification of a shape deformation part.
- a synthetic resin container lid constructed according to the present invention comprises an inner plug 2 shown in FIGS. 1 to 4 and a lid body 4 shown in FIGS.
- the inner plug 2 can be injection-molded from an appropriate synthetic resin such as polyethylene or polypropylene.
- the lid body 4 can also be injection-molded from an appropriate synthetic resin such as polyethylene or polypropylene.
- the inner plug 2 includes a circular blocking wall 6 and a mounting wall 8 having a substantially cylindrical shape connected to the outer peripheral edge of the blocking wall 6.
- the blocking wall 6 includes a central main portion 10 that extends substantially horizontally, an annular ridge portion 12 that bulges upward from the outer peripheral edge of the central main portion 10, and an upper end of the annular ridge portion 12. Having an annular outer peripheral edge 14 extending substantially horizontally radially outward. An annular seal piece 16 that hangs downward is attached to the lower surface of the annular outer peripheral edge portion 14.
- the central main portion 10 of the blocking wall 6 is formed with at least one, preferably two or three breakable thin lines at equal intervals in the circumferential direction, and at least one, preferably two. It is important that one or three deformation regions are defined.
- two breakable thin lines 18 are formed point-symmetrically with respect to the central point of the blocking wall 6, and two deformation regions 20 are defined.
- Each of the breakable thin lines 18 has a substantially semicircular break start end 18a, an outer arcuate portion 18b extending following a radially outer end of the break start end 18a, and a radial direction of the break start end 18a. It has an inner arcuate portion 18c extending following the inner end.
- the outer arc-shaped portion 18b extends in a substantially arc shape at the outer peripheral edge of the central main portion 10.
- the inner arc-shaped portion 18c extends linearly from the radially inner end portion of the fracture start end portion 18a, and then extends in a substantially arc shape at the central portion of the central main portion 10 to form an arc shape as a whole.
- the downstream end of the outer arc-shaped portion 18c and the downstream end of the inner arc-shaped portion 18c are separated from each other in a substantially radial direction.
- the deformation region 20 defined by the breakable thin line 18 is extended in an arc in the counterclockwise direction in FIG. 2 (and thus viewed from above).
- each of the locked means 22 is composed of a locked piece that extends upward from the upstream end of the deformation region 20 and then extends radially inward. Consists of a locked piece having a column portion 22a extending substantially vertically upward from the upper surface of the upstream end portion and a protruding beam portion 22b extending substantially horizontally inward in the radial direction from the upper end portion of the column portion 22a. Has been. A common support 24 that extends substantially vertically upward is disposed at the center of the upper surface of the blocking wall 6, and the radially inner end of each protruding beam portion 22 b of the locked means 22 is connected to the common support 24.
- the radially inner ends of the projecting beam portions 22 b of the locked means 22 are connected to each other via a common column 24.
- the common beam 24 can be omitted and the extended beam portions 22b extending from the two column portions 22a can be directly interconnected.
- annular locking ridge 26 projecting outward in the radial direction is formed at the upper end of the outer peripheral surface of the mounting wall 8.
- a positioning groove 28 is formed at a predetermined circumferential position of the annular locking protrusion 26.
- An annular shoulder surface 30 facing upward is formed on the inner peripheral surface of the mounting wall 8. Then, a region below the annular shoulder surface 30 on the inner peripheral surface of the mounting wall 8 and above the upper surface of the annular outer peripheral edge portion 14 of the blocking wall 6 is clearly shown by referring to FIG. 4 together with FIG.
- one protrusion 32 having a substantially rectangular parallelepiped shape and ratchet claws 34 and 36 are formed so as to be separated from the protrusion 32 on both sides in the circumferential direction by a required distance.
- Each of the ratchet pawls 34 and 36 has a gently inclined surface 34a and 36a extending gradually inward in the counterclockwise direction in FIG. 2 and a steep engaging surface 34b located at the downstream end in the counterclockwise direction. And 36b. Cutouts 34c and 36c extending in the clockwise direction are formed in the locking surfaces 34b and 36b.
- a plurality of locking ridges 38 projecting inward in the radial direction are arranged.
- the locking protrusions 38 are extended in the circumferential direction at a slight interval in the circumferential direction.
- annular ridges extending continuously in the circumferential direction can be formed.
- the outer diameter of the lower half portion of the mounting wall 8 is larger than the outer diameter of the upper half portion, and an annular shoulder surface 39 extending upward substantially extending horizontally is formed at a substantially intermediate portion in the axial direction of the mounting wall 8. ing.
- the wall thickness of the lower half of the mounting wall 8 is made larger than the wall thickness of the upper half, and the mounting wall 8 is located above the lower end of the mounting wall 8 in the vicinity of the upper end of the wall thickness increasing portion.
- An annular gap 40 having a depth up to and extending in the circumferential direction is formed.
- One or several notches (not shown) extending from the annular gap 40 to the outer peripheral surface of the mounting wall 8 are also formed in the lower half of the mounting wall 8 in association with the annular gap 40.
- the annular gap 40 and the notch formed in relation to the annular gap 40 are used for so-called separate collection after the contents of the container are consumed after the inner plug 2 attached to the mouth and neck of the container is consumed as described later. It is a well-known configuration that enables the inner plug 2 to be easily and easily detached from the mouth and neck of the container (for details, see, for example, JP-A-10-59400 and JP-A-2004-83092). See).
- the lid body 4 in the illustrated embodiment includes an outer lid 43 together with the body portion 42.
- the main body 42 includes a circular cover wall 44 extending substantially horizontally and a cylindrical fitting wall 46 connected to the outer peripheral edge of the cover wall 44. It is important that at least one, preferably two or three discharge openings 48 corresponding to the deformation region 20 disposed in the inner plug 2 are formed in the central portion of the cover wall 44. It is. In the illustrated embodiment, two discharge openings 48 are formed corresponding to the two deformation regions 20 provided in the inner plug 2.
- the two discharge openings 48 positioned symmetrically with respect to the center point of the cover wall 44 have a shape that substantially matches the shape of the deformation region 20, and are extended in an arc shape in the counterclockwise direction in FIG.
- a substantially cylindrical discharge guide wall 50 is formed on the upper surface of the cover wall 44 and extends upward outside the discharge opening 48 in the radial direction.
- the portion of the discharge guide wall 50 located on the right side in FIGS. 5 and 7 is slightly inclined to the right side upward.
- the upper end portion of the discharge guide wall 50 is extended in a substantially semicircular shape in FIG.
- an annular locking ridge 52 is also formed that extends from the outer peripheral edge of the cover wall 44 to the upper side in a radially inclined manner.
- a cylindrical seal piece 54 extending downward is formed on the outer peripheral edge of the lower surface of the cover wall 44.
- Locking projections 56 having a rectangular parallelepiped shape projecting downward and radially inward are formed at predetermined positions in the circumferential direction on the inner circumferential surface of the seal piece 54. As will be described later, the locking projection 56 cooperates with the projection 32 and the ratchet pawls 34 and 36 disposed on the inner plug 2.
- each of the locking means 58 is constituted by a locking piece extending downward from the lower surface of the cover wall 44 and then extending in a predetermined direction, and more specifically, the discharge opening 48. It is comprised from the latching piece which has the protrusion part 58b extended in an arc shape counterclockwise in FIG. 5 from the lower end of this hanging pillar part 58a and the lower end of this hanging pillar part 58a.
- each of the two drooping column portions 58a facing each other in the diameter direction is a substantially trapezoid.
- FIG. 5 which is a plan view, it is advantageous from the viewpoint of molding that the substantially entire projections 58 b are located in the discharge opening 48.
- the fitting wall 46 which may be substantially cylindrical, is suspended from the outer peripheral edge of the cover wall 44.
- a plurality of engaging protrusions 62 extending in the circumferential direction are formed on the inner circumferential surface of the fitting wall 46 at intervals in the circumferential direction.
- a positioning protrusion 64 having a substantially rectangular parallelepiped shape is formed at a predetermined position in the circumferential direction at the lower end portion of the inner peripheral surface of the fitting wall 46. As will be further described later, the positioning protrusion 64 cooperates with the positioning groove 28 formed in the inner plug 2.
- a positioning protrusion can be formed at an appropriate portion of the inner plug 2 and a positioning groove cooperating with the positioning protrusion can be formed at an appropriate portion of the lid body 4.
- An immersive portion 60 extending in an arc shape is formed at a specific angle position on the outer peripheral surface of the fitting wall 46.
- the outer lid 43 includes a circular top wall 66 and a cylindrical skirt wall 68 that hangs down from the periphery of the top wall 66.
- the outer lid 43 is pivoted to the main body 42 by connecting a circumferential specific portion at the lower end of the skirt wall 68 to a circumferential specific portion of the fitting wall of the main body 42 via a hinge means 70. It is connected freely.
- the lid body 6 composed of the main body portion 42 and the outer lid 43 is molded in a state illustrated by solid lines in FIGS. 5 to 7, and the outer lid 43 with respect to the main body portion 42 is solid lines in FIGS. 5 to 7. It can turn between the open position shown in the figure and the closed position shown by a two-dot chain line in FIG.
- the hinge means 70 which may be in a known form per se, is located on the diametrically opposite side of the recessed portion 60 formed in the fitting wall 46 of the main body portion 42.
- a cylindrical sealing piece 72 is formed on the inner surface of the top wall 66.
- two convex portions 74 extending in a semicircular shape on the radially outer side of the seal piece 72 in the right half portion in FIGS. 5 and 7 are also formed.
- An annular locking groove 76 is formed in the lower part of the inner peripheral surface of the skirt wall 68.
- two protrusions 78 extending in a semicircular arc shape in the axial direction intermediate portion in the right half portion in FIG. 7 are also formed.
- an arc-shaped ridge 80 positioned on the diametrically opposite side with respect to the hinge means 70 is formed.
- two relatively long arc-shaped ridges 82 and two relatively short arc-shaped ridges 84 are formed on the front end surface, that is, the lower end surface of the skirt wall 68.
- the outer peripheral surface of the seal piece 72 is brought into close contact with the inner peripheral surface of the discharge guide wall 50 in the main body portion 42. Further, the annular locking groove 76 is locked to the annular locking protrusion 52 of the main body 42, and thus the outer lid 43 is locked to the closed position so as to be releasable.
- the arc-shaped ridges 82 and 84 are brought into close contact with the peripheral edge of the upper surface of the cover wall 44 of the main body 42.
- the inner plug 2 and the lid body 4 as described above are combined as shown in FIG. More specifically, the main body portion 42 in the lid main body 4 in which the outer lid 43 is in the closed position is forcibly lowered with respect to the inner plug 2, and the fitting wall 46 of the main body portion 42 is moved to the inner plug 2. It is fitted to the outer peripheral surface of the mounting wall 8. At this time, the positioning groove 64 (FIG. 6) is formed in the upper end portion of the outer peripheral surface of the mounting wall 8 with the circumferential position of the positioning protrusion 64 (FIG. 6) formed on the lower end portion of the inner peripheral surface of the fitting wall 46.
- the positioning protrusion 64 is made to enter the positioning groove 28 so as to coincide with the circumferential position of 1), thereby restricting the relative angular position of the lid body 4 with respect to the inner plug 2.
- the engagement protrusion 62 formed on the inner peripheral surface of the fitting wall 46 is formed on the outer peripheral surface of the mounting wall 8.
- the lid main body 4 is rotatably attached to the inner plug 2 in this manner.
- the seal piece 54 of the lid body 4 is brought into close contact with the upper end portion of the inner peripheral surface of the mounting wall 8 of the inner plug 2.
- the fitting wall 46 of the lid main body 4 is fitted to a portion above the annular shoulder surface 39 of the mounting wall 8 of the inner plug 2, and the lower end of the fitting wall 46 is located slightly above the annular single surface 39.
- the outer peripheral surface of the fitting wall 46 and the outer peripheral surface of the mounting wall 8 below the annular shoulder surface 39 are advantageously substantially flush with each other (the difference between the outer diameters is 1 mm or less).
- the locking projection 56 formed on the seal piece 54 of the lid main body 4 is located adjacent to the downstream side in the counterclockwise direction in FIG.
- the protrusion 32 and the locking protrusion 56 cooperate to constitute a rotation preventing means, and the lid body 4 rotates clockwise in FIG. 2 (clockwise as viewed from above in FIG. 9) with respect to the inner plug 2.
- the protruding portions 58b of the locking means 58 in the lid body 4 are separated from each other below the overhanging beam portions 22b of the locked means 22 in the inner plug 2 and upstream in the counterclockwise direction in FIG. (In the illustrated embodiment, the pair of projecting beam portions 22b are not completely point-symmetrical and are slightly shifted from each other for the convenience of the molding die and the like, and the pair of projecting portions 58b are also completely corresponding to this. Is not point-symmetrical but slightly shifted).
- the mouth and neck portion 86 of the container to which the container lid constructed according to the present invention is applied is also shown by a two-dot chain line.
- the mouth-and-neck portion 86 of the container which can be formed from an appropriate synthetic resin or glass, has a cylindrical shape as a whole, and an annular locking groove 88 is formed on the outer peripheral surface thereof.
- a container lid is attached to 86.
- the locking protrusion 38 formed on the lower end portion of the inner peripheral surface of the mounting wall 8 of the inner plug 2 is locked in the locking groove 88 of the mouth neck portion 86, and the seal piece 16 of the inner plug 2 is the mouth neck portion.
- the inner peripheral surface of 86 is brought into close contact with.
- each of the two locking means 58 disposed on the lid body 4 is disposed on the inner plug 2.
- Each of the two locked means 22 is locked. More specifically, the protruding portion 58b of the locking means 58 enters below the protruding beam portion 22b of the locked means 22, and the suspended column portion 58a of the locking means 58 is the protruding beam portion of the locked means 22. 22b.
- the predetermined angle ⁇ is conveniently about 50 to 60 degrees.
- the lid body 4 has an angle ⁇ (0 degree ⁇ ⁇ ⁇ 20) smaller than the predetermined angle ⁇ by 0 to 20 degrees with respect to the inner plug 2.
- the locking projection 56 disposed on the lid body 4 elastically climbs over the ratchet pawl 34 disposed on the inner plug 2, and the lid body 4 moves against the inner plug 2.
- rotation in the clockwise direction when viewed from above (clockwise in FIG. 2) is prevented by the cooperation of the locking protrusion 56 and the locking surface 34b of the ratchet pawl 34 that stands up. Therefore, the locking projection 56 and the ratchet pawl 34 cooperate to constitute a return rotation preventing means.
- the breakable thin line 18 breaks from the break starting end 18a to the outer arcuate part 18b and the inner arcuate part 18c. Then, when the rotation of the lid main body 4 with respect to the inner plug 2 proceeds to an angle ⁇ (FIG. 2), as shown by the two-dot chain line in FIG. It abuts against the provided protrusion 32 and prevents the lid body 4 from rotating further counterclockwise with respect to the inner plug 2. Therefore, the locking projection 56 and the projection 32 cooperate to constitute a rotation limiting means for limiting the rotation of the lid body 4 to the angle ⁇ .
- the angle ⁇ is conveniently about 300 to 320 degrees.
- each of the breakable thin-wall lines 18 has a substantially downstream end of the respective outer arc-shaped portion 18 a and inner arc-shaped portion 18 b.
- the deformation region 20 disposed on the closing wall 6 of the inner plug 2 is deformed in a roll shape by being deformed upward and counterclockwise in accordance with the progress of the breakage of the breakable thin line 18.
- two passage openings 90 (FIG. 10) are generated.
- the downstream end of the outer arcuate portion 18a and the downstream end of the inner arcuate portion 18b of the breakable thin line 18 are separated from each other, and the deformation region 20 is separated from the blocking wall 6 without being broken between the two. There is no.
- the locking projection 56 provided on the lid body 4 is provided on the inner plug 2.
- the ratchet pawl 36 that is present is overcome elastically. Therefore, the rotation of the lid body 4 in the clockwise direction with respect to the inner plug 2 is prevented by the cooperation of the locking projection 56 and the raised locking surface 36 b of the ratchet pawl 36. Accordingly, the locking projection 56 and the ratchet pawl 36 cooperate to constitute a reverse rotation preventing means.
- the outer lid 43 of the lid body 4 is swung to the position indicated by the two-dot chain line in FIG. 10, and then the container is tilted. Then, the contents of the container flow out through the passage opening 90 generated in the closing wall 6 of the inner plug 2 and the discharge opening 48 disposed in the lid body 4 and are guided to the discharge guide wall 50 of the lid body 4. Discharged.
- each of the deformation regions 120 is centered on the obstruction wall 106 from the downstream end to the upstream, as will be clearly understood with particular reference to FIG.
- the portion 110 extends horizontally along the horizontally extending portion of the portion 110, and then gradually inclines upward toward the upstream end toward the upstream.
- the breakable thin line 118 that defines each of the deformation regions 120 has a semicircular break start end 118a, an outer arcuate portion 118b extending following the radially outer end of the break start end 118a, and a break start.
- An inner arc-shaped portion 118c extending following the radially inner end of the end portion 118a is provided.
- the outer arc-shaped portion 118b extends in a substantially arc shape
- the inner arc-shaped portion 118c extends linearly from the radially inner end portion of the fracture start end portion 118a, and then extends in the substantially arc shape in the central portion of the central main portion 110, It is arcuate as a whole.
- the downstream end of the outer arc-shaped portion 118c and the downstream end of the inner arc-shaped portion 118c are separated from each other in a substantially radial direction.
- the upstream portion of the deformation region 120 extends obliquely upward toward the upstream end toward the upstream side, the break start end portion 118a, the outer arc portion 118b, and the inner arc portion 118c of each of the breakable thin-walled lines 118.
- a raised surface 121 extending vertically is formed in the central main portion 110 of the blocking wall 106 adjacent to the upstream portion.
- the upstream portion of the deformation region 120 is inclined upward to the upstream end toward the upstream, but if desired, substantially the entire deformation region 120 is inclined upward toward the upstream. It can also be used.
- Other than the above-described configuration of the inner plug 102 shown in FIGS. 11 to 13 is substantially the same as the inner plug 2 shown in FIGS. 1 to 4.
- FIG. 14 illustrates a state in which the inner plug 102 illustrated in FIGS. 11 to 13 is combined with the lid body 4 illustrated in FIGS. 5 to 8. 11 to 13 and the lid main body 4 shown in FIGS. 5 to 8 are combined in the same manner as the inner plug 2 shown in FIGS. 1 to 4 and the lid shown in FIGS. This is substantially the same as the combination mode described above with the main body 4.
- the lid body 4 is shown in FIG. 14 with respect to the inner plug 102 as mainly described with reference to FIGS. 2, 9 and 10.
- it is rotated counterclockwise, and the breakable thin line 118 is broken accordingly, and the deformation region 120 is deformed to generate a passage opening 190.
- each of the deformation regions 102 extends obliquely upward toward the upstream, so that each of the deformation regions 120 can be broken.
- the thin line 118 breaks, it is deformed upward and counterclockwise to form a roll, and two passage openings 190 (FIG. 15) are generated in the blocking wall 6. Since the upstream portion of the deformation region 120 is inclined upward toward the upstream, the generated opening area of the passage opening 190 is larger than when the entire deformation region 120 is extended horizontally. .
- the behavior of the inner plug 102 and the lid body 4 other than the above-described behavior when the passage opening 190 is generated is substantially the same as that of the combination of the inner plug 2 and the lid body 4.
- FIGS. 16 to 22 illustrate another preferred embodiment of a container lid constructed in accordance with the present invention.
- a container lid includes an inner stopper 201 shown in FIGS. 16 to 18 and a lid body 204 shown in FIGS.
- the outer peripheral surface 208 a below the annular shoulder surface 239 of the mounting wall 208 is spaced circumferentially at an angular portion positioned below in FIG. 17.
- Two ridges 241a that extend continuously from the lower end to the upper end are formed, and extend continuously from the lower end to the upper end at equal intervals in the circumferential direction at the angular position located in the upper direction in FIG.
- Three protrusions 241b are formed (the positional relationship between the protrusions 241a and 241b will be further described later).
- the configuration of the inner plug 202 other than the above-described configuration is substantially the same as that of the inner plug 2 shown in FIGS.
- the outer peripheral surface of the fitting wall 246 of the main body portion 242 is circumferentially positioned at an angular portion positioned upward in FIG. 19.
- Two ridges 259a extending continuously from the upper end to the lower end are formed at intervals, and three ridges 259a extending continuously from the upper end to the lower end at equal intervals in the circumferential direction at the angular position located in the lower part in FIG. (As will be described in more detail later, the protrusion 259a corresponds to the protrusion 241a, and the protrusion 259b corresponds to the protrusion 241b).
- ridges 281a are formed at intervals in the circumferential direction at a portion positioned at the upper side in FIG.
- the three protrusions 81b are formed at equal intervals in the circumferential direction at the angled portion.
- the upper ends of the ridges 281a and 281b are inclined inward in the radial direction upward.
- the protrusions 281 a and 281 b are respectively fitted to the fitting walls 246 of the main body portion 242.
- the configuration of the lid body 4 other than the above-described configuration is substantially the same as the lid body 4 shown in FIGS.
- the inner plug 202 and the lid body 204 are shown in FIG. 21 in substantially the same manner as the combination mode of the inner plug 2 shown in FIGS. 1 to 4 and the lid body 4 shown in FIGS. In the figure, it is combined with the descending state. Then, when the inner plug 202 and the lid body 204 are combined as required, as clearly understood by referring to FIG. 21 together with FIG. 19, the center in the circumferential direction of the hinge means 270 of the lid body 204 is seen from above.
- the protrusion 241a formed on the outer peripheral surface of the mounting wall 208 and the fitting are fitted in a specific region 286a having a width of approximately 30 to 90 degrees in the circumferential direction with a portion having an angular position of 90 degrees clockwise from the center.
- the protrusions 259a formed on the outer peripheral surface of the joint wall 2462 are positioned, and the two protrusions 241a and the two protrusions 259a are lower than the outer peripheral surface of the fitting wall 246 and the annular shoulder surface 239 of the mounting wall 208. Extending in the axial direction substantially continuously over the outer peripheral surface 208a. In addition, it is mounted on a specific region 286b having a width of approximately 30 to 90 degrees in the circumferential direction with a portion located 90 degrees counterclockwise from the circumferential center of the hinge means 270 as viewed from above.
- the protrusions 241b formed on the outer peripheral surface of the wall 208 and the protrusions 259b formed on the outer peripheral surface of the fitting wall 246 are positioned, and the three protrusions 241b and the three protrusions 359b include the fitting wall 246.
- the outer peripheral surface 208a below the annular shoulder surface 239 of the mounting wall 208 continuously extend in the axial direction.
- the relative shapes of the corresponding deformed portions that is, the protrusion 241a and the protrusion 259a and the protrusion 241b and the protrusion 259b
- the lid body 204 change as it is rotated, thereby demonstrating that the lid body 204 has been rotated relative to the inner plug 202.
- the protrusion 241a and the protrusion 259a in the specific region 286a, and the protrusion 241b and the protrusion 259b in the specific region 286b, respectively are the outer peripheral surfaces of the fitting wall 246.
- the outer peripheral surface 208a below the annular shoulder surface 239 of the mounting wall 208 extends in the axial direction continuously.
- the protrusion 259a is somewhat clockwise when viewed from above the protrusion 241a.
- FIG. 5 it is clearly shown that the protrusions 259a are displaced somewhat in the clockwise direction as viewed from above the protrusions 241b, and thus the lid body 204 is rotated with respect to the inner plug 202 (so-called tamper evidence). Characteristics are guaranteed).
- 23 and 24 show a modification of the shape deforming portion.
- three flat surfaces 341a extending in the axial direction are formed on the outer peripheral surface 308a below the annular shoulder surface 339 of the mounting wall 308 in the specific region 386a, and the fitting wall
- Three flat surfaces 359a extending in the axial direction are formed on the outer peripheral surface of 346, and in the specific region 386b, four flat surfaces extending in the axial direction on the outer peripheral surface 308a below the annular shoulder surface 339 of the mounting wall 308 are formed.
- a flat surface 341 b is formed, and four flat surfaces 359 b extending in the axial direction are formed on the outer peripheral surface of the fitting wall 346.
- the flat surfaces 341a and 359a disposed in the specific region 386a and the flat surfaces 341b and 359b disposed in the specific region 386b are different in number and width.
- the flat surface 341a and the flat surface 359a extend continuously in the specific region 386a
- the flat surface 341b and the flat surface 359b extend continuously in the axial direction in the specific region 386b. .
- FIG. 25 shows still another modified example of the shape deforming portion.
- three flat surfaces 441a extending in the axial direction are formed on the outer peripheral surface below the annular shoulder surface of the mounting wall, and on the outer peripheral surface of the fitting wall.
- three flat surfaces 459a extending in the axial direction are formed, and in the specific region 486b, three flat surfaces 441b extending in the axial direction are formed on the outer peripheral surface below the annular shoulder surface of the mounting wall.
- three flat surfaces 459b extending in the axial direction corresponding to the outer peripheral surface of the fitting wall are formed.
- Each of the flat surfaces 441a, 459a, 441b and 459b is provided with additional flat surfaces 490a and 490b extending radially inward at the upstream edge in the predetermined direction (counterclockwise in FIG. 25).
- the additional flat surfaces 490a and 490b provide a surface for locking a finger when the lid body is rotated in a predetermined direction with respect to the inner plug.
- the shape deforming portion is disposed at a specific portion of the fitting wall (and skirt wall) of the lid body and a specific portion of the mounting wall.
- appropriate characters or patterns can be printed on the specific part of the fitting wall (and the skirt wall) of the lid body and the specific part of the mounting wall.
- Inner plug 4 Lid main body 6: Closure wall 8: Mounting wall 18: Breakable thin line 18a: Break start end of breakable thin line 18b: Outer arcuate portion of breakable thin line 18c: Breakable thin line Inner arc-shaped portion 20: Deformation region 22: Locked means 22a: Strut portion of locked means 22b: Overhanging beam portion of locked means 32: Locking protrusion 34: Ratchet claw 36: Ratchet claw 42: Cover body Body part 43: outer lid of the lid body 44: covering wall 46: fitting wall 48: discharge opening 56: locking projection 58: locking means 58a: drooping column part 58b: projecting part 86: mouth and neck part of container 90 : Passing opening 102: Inner plug 118: Breakable thin line 118a: Breaking start end 118b of the breakable thin line: Outer arcuate part 118c of the breakable thin line 118c: Inner arc of the breakable thin line 120: deformation region 202: inner plug 204: Lid
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Abstract
Description
該中栓は円形閉塞壁及び該閉塞壁の外周縁に接続された筒形装着壁を含み、該装着壁を容器の口頸部の外周面に嵌合せしめることによって容器の口頸部に装着され、該閉塞壁が容器の口頸部を閉塞し、
該蓋本体は円形覆壁及び該覆壁の外周縁に接続された筒形嵌合壁を含み、該嵌合壁を該中栓の該装着壁の外周面に嵌合することによって該中栓に回転自在に装着され、該覆壁が該中栓の該閉塞壁の上方に位置し、
該中栓の該閉塞壁には少なくとも1個の破断可能薄肉ラインが形成されており、該破断可能薄肉ラインは破断開始端部から延びる外側弧状部と該破断開始端部から延びる内側弧状部とを有し、該外側弧状部と該内側弧状部との間に弧状変形領域が規定されており、
該変形領域には被係止手段が付設されており、
該蓋本体の該覆壁には少なくとも1個の排出開口が形成されており、該覆壁の下面には該被係止手段と協働する係止手段が配設されており、
該中栓に該蓋本体を装着した状態において該係止手段は所定方向に見て該被係止手段の上流側に位置し、該中栓に対して該蓋本体を該所定方向に回転せしめると該係止手段が該被係止手段に係止せしめられ、該中栓に対して該蓋本体を該所定方向に更に回転せしめると該係止手段及び該被係止手段を介して該変形領域に力が加えられ、該中栓の該破断可能薄肉ラインが破断されると共に該変形領域が変形され、これによって該中栓の該閉塞壁に通過開口が生成される、
ことを特徴とする容器蓋が提供される。
該被係止手段は該所定方向に見て該変形領域の上流端部から上方に延出し次いで半径方向内方に延びる被係止片から構成されており、
該係止手段の各々は該覆壁の下面から下方に延び次いで該所定方向に延びる係止片から構成されている、ことによって達成される。
4:蓋本体
6:閉塞壁
8:装着壁
18:破断可能薄肉ライン
18a:破断可能薄肉ラインの破断開始端部
18b:破断可能薄肉ラインの外側弧状部
18c:破断可能薄肉ラインの内側弧状部
20:変形領域
22:被係止手段
22a:被係止手段の支柱部
22b:被係止手段の張出梁部
32:係止突起
34:ラチェット爪
36:ラチェット爪
42:蓋本体の本体部
43:蓋本体の外蓋
44:覆壁
46:嵌合壁
48:排出開口
56:係止突起
58:係止手段
58a:垂下柱部
58b:突出部
86:容器の口頸部
90:通過開口
102:中栓
118:破断可能薄肉ライン
118a:破断可能薄肉ラインの破断開始端部
118b:破断可能薄肉ラインの外側弧状部
118c:破断可能薄肉ラインの内側弧状部
120:変形領域
202:中栓
204:蓋本体
302:中栓
304:蓋本体
Claims (21)
- 容器の口頸部に装着される合成樹脂製中栓と該中栓に装着される合成樹脂製蓋本体とから構成され、
該中栓は円形閉塞壁及び該閉塞壁の外周縁に接続された筒形装着壁を含み、該装着壁を容器の口頸部の外周面に嵌合せしめることによって容器の口頸部に装着され、該閉塞壁が容器の口頸部を閉塞し、
該蓋本体は円形覆壁及び該覆壁の外周縁に接続された筒形嵌合壁を含み、該嵌合壁を該中栓の該装着壁の外周面に嵌合することによって該中栓に回転自在に装着され、該覆壁が該中栓の該閉塞壁の上方に位置し、
該中栓の該閉塞壁には少なくとも1個の破断可能薄肉ラインが形成されており、該破断可能薄肉ラインは破断開始端部から延びる外側弧状部と該破断開始端部から延びる内側弧状部とを有し、該外側弧状部と該内側弧状部との間に弧状変形領域が規定されており、
該変形領域には被係止手段が付設されており、
該蓋本体の該覆壁には少なくとも1個の排出開口が形成されており、該覆壁の下面には該被係止手段と協働する係止手段が配設されており、
該中栓に該蓋本体を装着した状態において該係止手段は所定方向に見て該被係止手段の上流側に位置し、該中栓に対して該蓋本体を該所定方向に回転せしめると該係止手段が該被係止手段に係止せしめられ、該中栓に対して該蓋本体を該所定方向に更に回転せしめると該係止手段及び該被係止手段を介して該変形領域に力が加えられ、該中栓の該破断可能薄肉ラインが破断されると共に該変形領域が変形され、これによって該中栓の該閉塞壁に通過開口が生成される、
ことを特徴とする容器蓋。 - 該中栓の該閉塞壁には該破断可能薄肉ラインが周方向に等間隔をおいて2個又は3個形成されていて、該変形領域が周方向に等間隔をおいて2個又は3個規定されており、
該被係止手段は該所定方向に見て該変形領域の上流端部から上方に延出し次いで半径方向内方に延びる被係止片から構成されており、
該係止手段の各々は該覆壁の下面から下方に延び次いで該所定方向に延びる係止片から構成されている、請求項1記載の容器蓋。 - 該被係止片の各々は該変形領域の該所定方向に見て上流端部から上方に鉛直に延出する支柱部及び該支柱部の上端部から半径方向内方に水平に延びる張出梁部から構成されており、該張出梁部の半径方向内側端は相互に接続されている、請求項2記載の容器蓋。
- 該中栓の該閉塞壁には上面中心から上方に延出する共通支柱が配設されており、該被係止片の各々の該張出梁部の半径方向内側端は該共通支柱を介して相互に接続させている、請求項3記載の容器蓋。
- 該係止片の各々は該覆壁の下面から下方に延びる垂下柱部及び該垂下柱部の下端部から該所定方向に弧状に延びる突出部から構成されている、請求項2から4までのいずれかに記載の容器蓋。
- 該蓋本体の該覆壁には該変形領域に対応して2個又は3個の排出開口が形成されており、平面図において該突出部の各々は全体が該排出開口内に位置する、請求項5記載の容器蓋。
- 該中栓の該装着壁の外周面と該蓋本体の該嵌合壁の内周面との一方には、少なくとも1個の位置決め溝が形成され、他方には少なくとも1個の位置決め突起が形成されており、該位置決め溝内に該位置決め突起を進入せしめて該中栓に該蓋本体を装着することによって、該中栓に対する該蓋本体の相対的角度位置が規制される、請求項1から6までのいずれかに記載の容器蓋。
- 該中栓の該閉塞壁に形成されている該破断可能薄肉ラインの該外側弧状部及び該内側弧状部は上方から見て反時計方向に該破断開始端部から延在し、該所定方向は上方から見て反時計方向である、請求項1から7までのいずれかに記載の容器蓋。
- 該中栓と該蓋本体とには、相互に協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する回転阻止手段が配設されている、請求項1から8までのいずれかに記載の容器蓋。
- 該中栓に対して該蓋本体が該所定方向に50乃至60度である角度α回転せしめられると、該係止手段が該被係止手段に係止せしめられ、
該中栓と該蓋本体とには、該中栓に対して該蓋本体が該角度αより0乃至20度小さい角度β(0度≦α-β≦20度)回転せしめられると、協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する戻り回転阻止手段が配設されている、請求項1から9までのいずれかに記載の容器蓋。 - 該中栓と該蓋本体とには、協働して該中栓に対する該蓋本体の該所定方向への回転を300乃至320度である角度γに制限する回転制限手段が配設されている、請求項1から10までのいずれかに記載の容器蓋。
- 該中栓と該蓋本体とには、該中栓に対して該蓋本体が該所定方向に該角度γ回転せしめられると、協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する逆転阻止手段が配設されている、請求項11記載の容器蓋。
- 該変形領域の該所定方向に見て少なくとも上流部は上流に向かって漸次上方に傾斜せしめられている、請求項1から12までのいずれかに記載の容器蓋。
- 該閉塞壁の中央主部は、該変形領域の少なくとも上流部及びその近傍を除いて、水平に延在し、該変形領域は該所定方向に見て下流端から上流に向かって該中央主部の水平に延びる部位に沿って水平に延び、次いで上流に向かって上流端まで上方に傾斜して延び、
該閉塞壁の該中央主部には、該変形領域を規定する該破断可能薄肉ラインの該破断開始端部並びに該外側弧状部及び内側弧状部の上流部に隣接して、鉛直に延びる隆起面が形成されている、請求項13記載の容器蓋。 - 該中栓の該装着壁には上方を向いた環状肩面が形成されていて、該装着壁の、該環状肩面よりも下方に位置する外周面は該環状肩面よりも上方に位置する外周面よりも半径方向外方に位置し、該蓋本体の該嵌合壁は該装着壁の該環状肩面よりも上方の部分に嵌合され、
該蓋本体の該嵌合壁の外周面の少なくとも下部と該装着壁の該環状肩面よりも下方の外周面とには、夫々、対応する形状変形部及び/又は印刷が配設されており、該中栓に該蓋本体を所要とおりに装着した状態における該対応する形状変形部又は印刷の相対的関係は、該中栓に対して該蓋本体が回転せしめられると変化せしめられ、これによって該中栓に対して該蓋本体が回転せしめられたことが明示される、請求項1から14までのいずれかに記載の容器蓋。 - 該中栓に該蓋本体を所要とおりに装着した状態において、該蓋本体の該嵌合壁の外周面の少なくとも下部と該中栓の該装着壁の該環状肩面よりも下方の外周面とは略面一である、請求項15記載の容器蓋。
- 該蓋本体の該装着壁の外周面上端部にはヒンジ手段を介して外蓋が、該蓋本体の該覆壁を覆う閉位置と該蓋本体の該覆壁を露呈せしめる開位置との間を旋回自在に連結されており、
該ヒンジ手段の周方向中心から周方向両側に90度の角度間隔をおいた部位を周方向中心として周方向に30乃至100度の幅を有する2個の特定領域の各々において、該嵌合壁の外周面の少なくとも下部と該装着壁の該環状肩面よりも下方の外周面とに渡って連続して軸線方向に延び、該対応する形状変形部を構成する少なくとも1個の突条が配設されている、請求項15又は16記載の容器蓋。 - 該2個の特定領域の一方に配設されている該突条の数及び/又は幅は他方に配設されている該突条の数及び/又は幅と異なる、請求項17記載の容器蓋。
- 該蓋本体の該装着壁の外周面上端部にはヒンジ手段を介して外蓋が、該蓋本体の該覆壁を覆う閉位置と該蓋本体の該覆壁を露呈せしめる開位置との間を旋回自在に連結されており、
該ヒンジ手段の周方向中心から周方向両側に90度の角度間隔をおいた部位を周方向中心として周方向に30乃至100度の幅を有する2個の特定領域の各々において、該嵌合壁の外周面下部と該装着壁の該環状肩面よりも下方の外周面とに渡って連続して軸線方向に延び、該対応する形状変形部を構成する少なくとも1個の平坦面が配設されている、請求項15又は16記載の容器蓋。 - 該2個の特定領域の一方に配設されている該平坦面の数及び/又は幅は他方に配設されている該平坦面の数及び/又は幅と異なる、請求項19記載の容器蓋。
- 該平坦面の、該所定方向に見て上流側縁には、該平坦面の上流側縁から半径方向内方に延びる付加平坦面が付設されている、請求項19又は20記載の容器蓋。
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