WO2016084307A1 - Sealed packaging container - Google Patents

Sealed packaging container Download PDF

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Publication number
WO2016084307A1
WO2016084307A1 PCT/JP2015/005484 JP2015005484W WO2016084307A1 WO 2016084307 A1 WO2016084307 A1 WO 2016084307A1 JP 2015005484 W JP2015005484 W JP 2015005484W WO 2016084307 A1 WO2016084307 A1 WO 2016084307A1
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WO
WIPO (PCT)
Prior art keywords
lid
container body
inner ring
cylindrical portion
container
Prior art date
Application number
PCT/JP2015/005484
Other languages
French (fr)
Japanese (ja)
Inventor
和田　潔
Original Assignee
凸版印刷株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 凸版印刷株式会社 filed Critical 凸版印刷株式会社
Publication of WO2016084307A1 publication Critical patent/WO2016084307A1/en

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    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation

Definitions

  • the present invention relates to a cup-shaped sealed packaging container used for packaging liquids such as beverages.
  • FIG. 8 is a partial sectional view showing a conventional hermetic packaging container.
  • the hermetic packaging container 61 shown in FIG. 8 is used to wrap liquid contents such as beverages in a hermetically sealed state, and is attached to the container main body 62 so as to be openable and closable with a cup-shaped container main body 62.
  • the lid 63 and the packing 64 are provided.
  • the packing 64 is inserted into the lid 63 and is sandwiched between the inner surface of the top plate 65 and the container body 62.
  • the open end surface of the container main body 61 is formed in a flat shape.
  • Patent Document 1 Also, as other prior art documents related to the present invention, there are those listed in Patent Document 1.
  • the conventional hermetic packaging container shown in FIG. 8 uses a packing to ensure hermeticity.
  • the use of the packing has the following problems.
  • the manufacturing cost for inserting the packing into the inside of the lid is necessary. Therefore, the use of the packing increases the manufacturing cost of the entire sealed packaging container. There is a problem.
  • the sealed packaging container after filling the contents may be exposed to an environmental temperature of about 40 to 50 ° C. during the manufacturing and distribution process. In this case, the cushioning property of the compressed portion of the packing is reduced due to creep deformation.
  • the hermeticity of the hermetic packaging container is deteriorated at the time of resealing after opening and closing the lid. Furthermore, when the container body is molded, the open end surface of the container body may be damaged, but if the open end surface is damaged, the packing is not sufficiently compressed, leading to leakage of the contents.
  • This invention is made in order to solve these subjects, and it aims at providing the airtight packaging container which can ensure airtightness between a cover body and a container main body, without using packing.
  • the present invention relates to a hermetic packaging container that accommodates contents in a hermetically sealed state.
  • the hermetic packaging container includes a cup-shaped container body having an open end and a bottom, and a lid that is detachably attached to the container body by screwing and seals the open end.
  • the container main body includes an open end, a cylindrical first cylindrical portion having a first inner diameter, and a first cylindrical portion located on the bottom side of the first cylindrical portion and having a second inner diameter smaller than the first inner diameter. Two cylindrical portions and a barrel portion connected to the second cylindrical portion and having a bottom portion.
  • the lid includes a top plate, a peripheral wall connected to the outer peripheral edge of the top plate, and an inner ring provided on the inner surface of the top plate and having an outermost diameter larger than the second inner diameter.
  • the inner ring is brought into close contact with the inner peripheral surface of the second cylindrical portion along with the screwing when the lid is attached to the container body, and seals the container body.
  • the present invention it is possible to provide a hermetic packaging container that can ensure hermeticity between the lid and the container body without using packing.
  • FIG. 1 is a perspective view of the hermetic packaging container according to the embodiment.
  • FIG. 2 is a partial cross-sectional view taken along the line II-II shown in FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG.
  • Drawing 4A is a figure explaining the attachment process of the lid in the airtight packaging container concerning an embodiment.
  • FIG. 4B is a diagram for explaining the lid attachment process following FIG. 4A.
  • FIG. 4C is a diagram illustrating a process of attaching the lid body following FIG. 4B.
  • FIG. 4D is a diagram illustrating a process of attaching the lid body following FIG. 4C.
  • FIG. 5 is a diagram for explaining the details of the lid attachment process shown in FIGS. 4B to 4C.
  • FIG. 6 is a partial cross-sectional view showing a packaging container according to Comparative Example 1.
  • FIG. 7 is a partial cross-sectional view showing a packaging container according to Comparative Example 2.
  • FIG. 8 is a partial cross-sectional view showing a conventional hermetic packaging container.
  • Structure of sealed packaging container> 1 is a perspective view of a hermetic packaging container according to the embodiment, FIG. 2 is a partial cross-sectional view taken along line II-II shown in FIG. 1, and FIG. 3 is taken along line III-III shown in FIG. It is sectional drawing which follows.
  • the hermetic packaging container 1 is for containing the contents in a hermetically sealed state, and includes a container body 2 and a lid 3 that is detachably attached to the container body 2 by screwing.
  • the container body 2 is a cup-shaped molded product made of a resin material such as polyethylene terephthalate, and has an open end and a bottom portion 5. More specifically, the container body 2 includes a cylindrical first cylindrical portion 18 including an open end, a cylindrical second cylindrical portion 19 connected to the bottom 5 side of the first cylindrical portion 18, and The body 22 is connected to the second cylindrical portion 19 and has the bottom portion 5. In the present embodiment, the first cylindrical portion 18 and the second cylindrical portion 19 are connected via a step, and the inner diameter of the second cylindrical portion 19 is smaller than the inner diameter of the first cylindrical portion 18. Is set. On the outer surface of the first cylindrical portion 18, a ridge 10 is provided along the entire circumference of the open end. The body 22 is provided with ribs 4a to 4b for improving the rigidity of the container body 2.
  • a resin material such as polyethylene terephthalate
  • the lid 3 is a molded product made of a resin material such as polyethylene or polypropylene, and includes a top plate 11, a cylindrical peripheral wall 12 connected to the outer peripheral edge of the top plate 11, an inner ring 14, and a contact ring 15.
  • a resin material such as polyethylene or polypropylene
  • the inner ring 14 is a substantially cylindrical member connected to the inner surface of the top plate 11. As shown in FIG. 2, the outer peripheral surface of the inner ring 14 has a curved shape in which the outline of the longitudinal section is an arc shape or an elliptical arc shape.
  • the maximum value of the outer diameter of the inner ring 14 (hereinafter referred to as “outermost diameter”) is smaller than the inner diameter of the first cylindrical portion 18 of the container body 2 and larger than the inner diameter of the second cylindrical portion 19. Designed to. Therefore, in a state where the lid 3 is screwed to the container main body 2, the inner ring 14 is compressed by the second cylindrical portion 19 of the container main body 2 as shown in FIG. It is in close contact with the inner peripheral surface, and the space between the container body 2 and the lid 3 is sealed.
  • the contact ring 15 protrudes from the inner surface of the top plate 11 of the lid 3 and is formed so as to surround the inner ring 14 with a predetermined interval.
  • the contact ring 15 abuts on the open end surface of the first cylindrical portion 18 when the lid 3 is screwed into the container body 2, and defines the rotation end position when the lid 2 is tightened. Is provided.
  • a thick portion 23 is provided in the vicinity of the connection portion with the top plate 11.
  • the distance between the inner ring 14 and the inner peripheral surface of the peripheral wall 12 becomes narrower as it approaches the inner surface of the top plate 11.
  • a knurling is provided on the outer surface of the peripheral wall as a clue when the lid 3 is opened and closed.
  • This knurl has a substantially triangular cross section so that the resistance force applied to the finger when the lid 3 is rotated in the opening direction is greater than the resistance force applied to the finger when the lid 3 is rotated in the closing direction. Is formed.
  • a male screw 7 is provided on the outer peripheral surface of the second cylindrical portion 19 of the container body 2, and a female screw 13 that is threadedly engaged with the male screw 7 on the inner peripheral surface of the peripheral wall 12 of the lid 3. Is provided.
  • the male screw 7 and the female screw 13 are double threads.
  • a pair of first convex portions 8 a and 8 b and a pair of convex strips 9 a and 9 b are provided on the outer peripheral surface of the second cylindrical portion 19 of the container body 2.
  • a pair of second convex portions 16 a and 16 b are provided on the inner peripheral surface of the peripheral wall 12 of the lid 3.
  • the first convex portions 8a and 8b are respectively arranged on a part on the outer peripheral surface of the second cylindrical part 19 and another part facing the part, and the first convex parts 8a and 8b are arranged with the central axis AX of the container body 2 interposed therebetween.
  • the two cylindrical portions 19 are aligned in the diameter direction.
  • the 1st convex parts 8a and 8b contact
  • the second convex portions 16a and 16b are respectively arranged on a part on the inner peripheral surface of the peripheral wall 12 and on another part facing the part, and the second convex parts 16a and 16b are arranged with the center axis AX of the container body 2 interposed therebetween.
  • the cylindrical portions 19 are aligned in the diameter direction.
  • the first convex portions 8a and 8b constitute a lock mechanism together with the second convex portions 16a and 16b. More specifically, inclined surfaces 20a and 20b are provided in the opening direction side portions of the first protrusions 8a and 8b, respectively, and flat portions are provided in the closing direction side portions of the first protrusions 8a and 8b. Surfaces 21a and 21b are respectively provided.
  • the inclined surfaces 20a and 20b are surfaces inclined with respect to a plane including the central axis AX, and the height from the outer surface of the second cylindrical portion 19 (second cylindrical portion as it goes in the opening direction). 19 is a surface on which the height in the diametrical direction 19 decreases.
  • the flat surfaces 21a and 21b are surfaces substantially parallel to a plane including the central axis AX.
  • the second convex portions 16 a and 16 b provided on the lid 3 are deformed with the peripheral wall 12 of the lid 3, and the first convex portion 8 a and Get over 8b.
  • the lid 3 is closed by providing the inclined surfaces 20a and 20b on the closing direction side portions of the first convex portions 8a and 8b, the second convex portions 16a and 16b become the first convex portion 8a. And it becomes easy to get over 8b.
  • the ridges 9a and 9b are respectively arranged on a part on the outer peripheral surface of the second cylindrical part 19 and on another part facing the part, and the second cylinder sandwiching the central axis AX of the container body 2
  • the portions 19 are aligned in the diameter direction.
  • the protrusions 9a and 9b are formed at substantially the same level as the first protrusions 8a and 8b (the height from the bottom 5 of the container body 2 is approximately the same level). As shown in FIG. 3, the protrusions 9 a and 9 b abut on the inner peripheral surface of the peripheral wall 12 of the lid body 3 in a state where the lid body 3 is completely fastened to the container body 2.
  • the protrusions 9a and 9b and the first protrusions 8a and 8b described above are in contact with the inner peripheral surface of the peripheral wall 12 of the lid 3, whereby the inclination of the lid 3 with respect to the container body 2, that is, the container body The displacement of the lid 3 such that the central axis of the lid 3 is inclined with respect to the second central axis AX is suppressed.
  • FIG. 4A to FIG. 4D are views for explaining the process of attaching the lid in the hermetic packaging container according to the embodiment.
  • the open end portion of the container body 2 is inserted into the peripheral wall 12 of the lid 3.
  • a part of the distal end side of the inner ring 14 of the lid 3 is inserted into the container body 2 as shown in FIG. 4B.
  • a portion of the inner ring 14 having the largest outer diameter (hereinafter referred to as “outermost diameter portion”) is the second portion of the container body 2. It contacts the inner peripheral surface of the cylindrical portion 19.
  • the inner ring 14 is brought into close contact with the inner peripheral surface of the second cylindrical portion 19 as the lid 3 is screwed as shown in FIG. 4D.
  • FIG. 5 is a diagram for explaining the details of the process of attaching the lid shown in FIGS. 4B to 4C. More specifically, FIGS. 5A to 5D are views showing the positional relationship between the first protrusion and the second protrusion, and are cross-sectional views corresponding to FIG. FIGS. 5E to 5H are enlarged sectional views near the open end of the container body. Further, the states shown in FIGS. 5A to 5D and the states shown in FIGS. 5E to 5H correspond to each other.
  • FIGS. 5A and 5B are views showing a state where the first protrusions 8a and 8b do not get over the second protrusions 16a and 16b, that is, a state where the lock mechanism is not locked. It is.
  • the outermost diameter portion of the inner ring 14 is located inside the first cylindrical portion 18, and at least a part of the inner ring 14, Since a gap is formed between the first cylindrical portion 18, the container body 2 is not sealed by the lid 3. Since the gap between the inner ring 14 and the first cylindrical portion 18 serves as a gas discharge path from the container body 2 when the lid 3 is tightened, the compression of the gas existing inside the container body 2 is prevented.
  • lid 3 It is relieved and it can control that the tightening torque of lid 3 becomes large.
  • the compression ratio of the gas remaining in the container body 2 increases when the lid 3 is tightened, and the tightening torque of the lid 3 increases.
  • an increase in tightening torque can be effectively suppressed.
  • the increase in internal pressure is alleviated, so that even when liquid is attached near the open end of the inner surface of the container body 2, the attached liquid remains in the inner ring 14 and the first cylinder. It can suppress ejecting from between the parts 18.
  • FIG. 5C is a diagram showing a state immediately after the first convex portions 8a and 8b get over the second convex portions 16a and 16b, that is, a state in which the lock mechanism is locked.
  • the outermost diameter portion of the inner ring 14 is inserted into the second cylindrical portion 19 and is in close contact with the inner peripheral surface. It will be in the state sealed by.
  • the vicinity of the open end of the container body 2 is inserted between the thick portion 23 of the peripheral wall 12 of the lid 3 and the inner ring 14.
  • FIG. 5 (d) shows a state in which the lid 3 is further rotated by a predetermined rotation angle after the first convex portions 8a and 8b get over the second convex portions 16a and 16b, that is, the lid It is a figure which shows the state by which the body 3 was tightened completely.
  • the outermost diameter portion of the inner ring 14 and the vicinity thereof are compressed by the inner peripheral surface of the second cylindrical portion 19 in FIG. It contacts the inner peripheral surface of the second cylindrical portion 19.
  • the vicinity of the open end of the container body 2 is expanded by the repulsive force of the compressed inner ring 14, and the ridges 10 provided on the outer periphery of the open end of the container body 2 are formed on the peripheral wall 12 of the lid 3.
  • the thick part In the state shown in FIG. 5 (h), in addition to the close contact between the inner ring 14 and the second cylindrical portion 19, the outer peripheral surface near the open end of the first cylindrical portion 18 and the peripheral wall 12 of the lid 3 are provided. The tightness is also secured by the close contact with the thick portion 23 formed.
  • the contact ring 15 is in contact with the open end surface of the container body 2, so that further rotation of the lid 3 in the closing direction is restricted.
  • the outermost diameter of the inner ring 14 is smaller than the inner diameter of the first cylindrical portion 18 of the container body 2 and the second cylindrical portion 19 Since it is designed to be larger than the inner diameter, in the process of tightening the lid 3, the compression of the gas in the container body 2 can be relaxed to prevent an increase in tightening torque, and when the lid 3 is tightened, the inner The outermost diameter portion of the ring 14 can be in close contact with the inner peripheral surface of the second cylindrical portion 19 to seal the container body 2. Therefore, according to this embodiment, without using packing, the hermetic packaging container 1 having a high sealing property between the lid body 3 and the container body 2 and having a small resistance when the lid body 3 is tightened is easily realized. it can.
  • the second convex portions 16a and 16b provided on the lid body 3 are replaced with the first convex portions 8a and 16b provided on the container body 2.
  • the positional relationship between the first convex portions 8a and 8b and the second convex portions 16a and 16b is defined so that the lid 3 can further rotate by a predetermined rotation angle.
  • the first convex portion at the rotational position of the second convex portions 16a and 16b where the tightening of the lid 3 stops the rotational position on the opening direction side (FIG. 5C) from FIG. 5D).
  • the second protrusions 16a and 16b are configured to get over the first protrusions 8a and 8b, making it easier for the user to feel a click when resealing, and whether or not it is in a sealed state.
  • the lid 3 is tightened by a predetermined rotation angle, so that the inner ring 14 can be Since the amount of insertion of the outer diameter portion into the container body 2 and the close contact area with the inner peripheral surface of the second cylindrical portion 19 can be increased, the airtightness of the airtight packaging container 1 can be improved.
  • the outermost outer ring of the inner ring 14 is in a state in which the second convex portions 16a and 16b provided on the lid body 3 get over the first convex portions 8a and 8b provided on the container body 2.
  • the rotation amount (tightening amount) of the lid body 3 with respect to the container body 2 is associated with the insertion amount of the inner ring 14 with respect to the container body 2 so that the diameter portion is in close contact with the inner peripheral surface of the second cylindrical portion 19. It has been. Therefore, when the lid 3 is resealed, the user tightens the lid 3 with the click feeling generated when the second convex portions 16a and 16b get over the first convex portions 8a and 8b as a guide.
  • the hermetic packaging container 1 can be sealed.
  • a thick portion 23 is provided in the vicinity.
  • the outer peripheral surface of the inner ring 14 is formed in a curved surface shape in which the outline of the longitudinal section is an arc shape or an elliptical arc shape.
  • the packaging container 51 according to Comparative Example 1 includes the same container body 2 as that described in the above embodiment, and a lid 53 provided with an inner ring 54 having a circumferential outer surface shape. Is a combination.
  • the packaging container 56 according to the comparative example 2 has the same container body 2 as that described in the above embodiment, and a curved surface shape in which the outer shape of the longitudinal section is a polygonal line shape protruding outward. This is a combination with a lid 57 provided with an inner ring 58 having.
  • the hermetic packaging container 1 described in the present embodiment is filled with liquid contents such as liquor.
  • the hermetic packaging container 1 after filling is about 40 to 50 ° C. when stored in a warehouse or transported. May be exposed to ambient temperatures. Under such an environmental temperature, there is a problem that the resin member to which the continuous stress is applied like the inner ring is likely to be creep-deformed.
  • the outer peripheral surface of the inner ring 54 is cylindrical, so that the amount of biding of the inner ring 54, that is, the difference between the outer diameter of the inner ring 54 and the inner diameter of the container body 2 is calculated. It cannot be taken large, and there is a limit to improving the sealing performance.
  • the outermost diameter part of the inner ring 58 and the container body 2 are almost in line contact with each other. Are susceptible to wear and damage, and if worn, the sealing performance is reduced. Moreover, in the packaging container 56 which concerns on the comparative example 2, since the contact area of the inner ring 58 and the container main body 2 will fall if the inner ring 58 bends inward by creep deformation, airtightness will fall. Further, in the packaging container 56 according to the comparative example 2, the contact area between the inner ring 59 and the container body 2 is reduced and sealed even when the center axis of the lid 57 is inclined with respect to the center axis of the container body 2. Sex is reduced.
  • the outer peripheral surface of the inner ring 14 is formed so as to have a curved surface shape in which the outline of the longitudinal section is an arc shape or an elliptical arc shape. If comprised in this way, since the repulsive force of the inner ring 14 will become large with respect to the compressive force applied to the diameter direction of the inner ring 14 from the 2nd cylindrical part 19 of the container main body 2, the tolerance with respect to a creep deformation
  • the difference between the outermost diameter of 14 and the inner diameter of the second cylindrical portion 19 can be made larger than in Comparative Examples 1 and 2, and the sealing performance can be improved without impairing the ease of opening and closing. Furthermore, when the outline of the longitudinal section of the outer peripheral surface of the inner ring 14 is an arc or an elliptical arc (that is, when the outer peripheral surface of the inner ring 14 is a spherical shape or a spheroid), the container is caused by vibration or the like. Even when the center axis of the lid 3 is rotationally moved in a direction in which the center axis AX of the main body 2 is inclined, any part of the outer peripheral surface of the inner ring 14 is kept in contact with the inner surface of the second cylindrical portion 19. , It is possible to suppress a decrease in hermeticity.
  • the first cylindrical portion 18 and the second cylindrical portion 19 are connected via a step, but the first cylindrical portion is not necessarily connected via a step. What is necessary is just to form so that the internal diameter of the 2nd cylindrical part 19 may become smaller than the internal diameter of 18.
  • the first cylindrical portion 18 is formed in a tapered shape having an inner diameter that widens from the bottom 5 side toward the open end side, or the first cylindrical portion of the first cylindrical portion 18 and the second cylindrical portion 19.
  • the first cylindrical portion 18 and the second cylinder are formed without a step by forming at least a portion connected to the portion 18 in a tapered shape in which the inner diameter increases from the bottom 5 side toward the open end side.
  • the unit 19 can be connected.
  • the shape of the 1st convex parts 8a and 8b which comprise a locking mechanism, and the shape of the 2nd convex parts 16a and 16b were specified, at the time of the rotation to the opening direction of the cover body 3 As long as the resistance force generated by the locking mechanism is configured to be larger than the resistance force generated by the locking mechanism when the lid 3 rotates in the closing direction, the shape of the first protrusions 8a and 8b, and the second The shapes of the convex portions 16a and 16b may be arbitrary.
  • the flat surfaces 21a and 21b are provided on the first projections 8a and 8b on the closing direction side, but the first projections 8a and 8b are inclined on the closing direction side.
  • An inclined surface having a larger inclination than 20a and 20b may be provided.
  • an inclined surface may be provided on the second convex portions 16a and 16b.
  • the lock mechanism may not be provided.
  • the screwed structure between the container body 2 and the lid 3 may be three or more screws.
  • the inner diameter of the first cylindrical portion 18 is larger than the outermost diameter of the inner ring 14 has been described.
  • the inner diameter of the first cylindrical portion 18 is less than or equal to the outermost diameter of the inner ring 14. And it is good also as a dimension smaller than the outer diameter of the front-end
  • FIG. Even in this case, in the process of fitting the inner ring 14 to the first cylindrical portion 18, a gap is generated between the tip portion of the inner ring 14 and the first cylindrical portion 18, so that it remains in the container body 2. Thus, the increase in internal pressure and the increase in tightening torque due to this can be suppressed.
  • the outermost diameter of the inner ring 14 when the lock mechanism is locked, that is, in a state where the first convex portions 8a and 8b get over the second convex portions 16a and 16b, the outermost diameter of the inner ring 14
  • the outer ring of the inner ring 14 is at the same time that the locking by the locking mechanism is applied, that is, at the same time that the first protrusions 8a and 8b get over the second protrusions 16a and 16b.
  • the diameter portion may be in close contact with the second cylindrical portion 19, or before the locking by the locking mechanism, that is, the first convex portions 8a and 8b are connected to the second convex portions 16a and 16b.
  • the outermost diameter portion of the inner ring 14 may be in close contact with the second cylindrical portion 19 before getting over.
  • the outer peripheral surface of the inner ring 14 is the first in the process of fitting the inner ring 14 to the first cylindrical portion 18.
  • the cylindrical portion 18 may be in close contact with a part of the cylindrical portion 18 so as to produce a hermetic seal.
  • the present invention can be used in a packaging container for hermetically packaging liquids such as shochu, sake, wine and the like.

Abstract

Provided is a sealed packaging container capable of ensuring tight sealing between the lid and the container body without using packing. The sealed packaging container (1) is provided with a cup-shaped container body (2) with an open end and a bottom, and a lid (3) that is detachably attached by being screwed onto the container body and is for sealing the open end. The container body (2) comprises: a cylindrically shaped first cylindrical section (18) that comprises the open end and has a first internal diameter; a second cylindrical section (19) located on the bottom end of the first cylindrical section and having a second internal diameter that is smaller than the first internal diameter; and a barrel section (22) that is connected to the second cylindrical section and comprises the bottom. The lid (3) comprises a top plate (11), a circumferential wall (12) connected to the circumferential edge of the top plate, and an inner ring (14) provided on the inner surface of the top plate (11) and the outermost diameter of which is greater than the second internal diameter. As a result of screwing when attaching the lid on the container body, the inner ring (14) is made to adhere closely to the inner circumferential surface of the second cylindrical section (19) and seals the container body (2).

Description

密閉包装容器Sealed packaging container
　本発明は、飲料等の液体の包装に用いられるカップ状の密閉包装容器に関する。 The present invention relates to a cup-shaped sealed packaging container used for packaging liquids such as beverages.
　図８は、従来の密閉包装容器を示す部分断面図である。 FIG. 8 is a partial sectional view showing a conventional hermetic packaging container.
　図８に示す密閉包装容器６１は、飲料等の液体の内容物を密閉状態に包装するために用いられるものであり、カップ状の容器本体６２と、螺合によって容器本体６２に開閉自在に取り付けられる蓋体６３と、パッキン６４とを備える。パッキン６４は、蓋体６３の内部に挿入され、天板６５の内面と容器本体６２との間に挟まれている。また、容器本体６１の開放端面は、平坦状に形成されている。容器本体６２に対して蓋体６３を締め込むと、蓋体６３の天板６５の内面と、容器本体６１の開放端面との間でパッキン６４が圧縮され、容器本体６２と蓋体６３との間が密閉される。 The hermetic packaging container 61 shown in FIG. 8 is used to wrap liquid contents such as beverages in a hermetically sealed state, and is attached to the container main body 62 so as to be openable and closable with a cup-shaped container main body 62. The lid 63 and the packing 64 are provided. The packing 64 is inserted into the lid 63 and is sandwiched between the inner surface of the top plate 65 and the container body 62. Moreover, the open end surface of the container main body 61 is formed in a flat shape. When the lid 63 is tightened with respect to the container main body 62, the packing 64 is compressed between the inner surface of the top plate 65 of the lid 63 and the open end surface of the container main body 61. The space is sealed.
　また、本発明と関連のある他の先行技術文献として、特許文献１に挙げたものがある。 Also, as other prior art documents related to the present invention, there are those listed in Patent Document 1.
特表２００４－５２６６４２号公報JP-T-2004-526642
　図８に示した従来の密閉包装容器は、パッキンを用いて密閉性を確保しているが、パッキンを用いることには、次のような問題がある。 The conventional hermetic packaging container shown in FIG. 8 uses a packing to ensure hermeticity. However, the use of the packing has the following problems.
　まず、パッキン自体の材料コストが必要であることに加え、蓋体の内部にパッキンを挿入するための製造コストが必要であるので、パッキンを用いることにより、密閉包装容器全体の製造コストが高くなるという問題がある。また、高い密閉性を得るためには、容器本体に対する蓋体の締め込みトルクを高く維持する必要があり、蓋体が振動等で緩んだ場合には、液体の内容物が漏れ出しやすいという問題がある。また、内容物を充填後の密閉包装容器は、製造や流通の過程で４０～５０℃程度の環境温度に晒される場合があるが、この場合、クリープ変形によりパッキンの圧縮箇所のクッション性が低下し、蓋体の開閉後の再封時に密閉包装容器の密閉性が悪くなるという問題がある。更に、容器本体の成型時には、容器本体の開放端面に傷が入る場合があるが、開放端面に傷が入るとパッキンの圧縮が不十分となり、内容物の漏れに繋がる。 First, in addition to the material cost of the packing itself, the manufacturing cost for inserting the packing into the inside of the lid is necessary. Therefore, the use of the packing increases the manufacturing cost of the entire sealed packaging container. There is a problem. In addition, in order to obtain a high hermeticity, it is necessary to maintain a high tightening torque of the lid with respect to the container body, and when the lid is loosened due to vibration or the like, the liquid content is likely to leak. There is. In addition, the sealed packaging container after filling the contents may be exposed to an environmental temperature of about 40 to 50 ° C. during the manufacturing and distribution process. In this case, the cushioning property of the compressed portion of the packing is reduced due to creep deformation. However, there is a problem that the hermeticity of the hermetic packaging container is deteriorated at the time of resealing after opening and closing the lid. Furthermore, when the container body is molded, the open end surface of the container body may be damaged, but if the open end surface is damaged, the packing is not sufficiently compressed, leading to leakage of the contents.
　本発明は、これらの課題を解決するためになされたものであり、パッキンを用いることなく蓋体と容器本体との間で密閉性を確保できる密閉包装容器を提供することを目的とする。 This invention is made in order to solve these subjects, and it aims at providing the airtight packaging container which can ensure airtightness between a cover body and a container main body, without using packing.
　本発明は、内容物を密閉状態に収容する密閉包装容器に関するものである。当該密閉包装容器は、開放端及び底部を有するカップ状の容器本体と、容器本体に螺合によって着脱自在に取り付けられ、開放端を封止する蓋体とを備える。容器本体は、開放端を含み、第１の内径を有する円筒形状の第１の円筒部と、第１の円筒部より底部側に位置し、第１の内径より小さな第２の内径を有する第２の円筒部と、第２の円筒部に接続され、底部を有する胴部とを含む。蓋体は、天板と、天板の外周縁に接続される周壁と、天板の内面に設けられ、最外径が第２の内径より大きいインナーリングとを含む。インナーリングは、蓋体を容器本体に取り付ける際の螺合に伴って第２の円筒部の内周面に密着されて、容器本体を密閉する。 The present invention relates to a hermetic packaging container that accommodates contents in a hermetically sealed state. The hermetic packaging container includes a cup-shaped container body having an open end and a bottom, and a lid that is detachably attached to the container body by screwing and seals the open end. The container main body includes an open end, a cylindrical first cylindrical portion having a first inner diameter, and a first cylindrical portion located on the bottom side of the first cylindrical portion and having a second inner diameter smaller than the first inner diameter. Two cylindrical portions and a barrel portion connected to the second cylindrical portion and having a bottom portion. The lid includes a top plate, a peripheral wall connected to the outer peripheral edge of the top plate, and an inner ring provided on the inner surface of the top plate and having an outermost diameter larger than the second inner diameter. The inner ring is brought into close contact with the inner peripheral surface of the second cylindrical portion along with the screwing when the lid is attached to the container body, and seals the container body.
　本発明によれば、パッキンを用いることなく蓋体と容器本体との間で密閉性を確保できる密閉包装容器を提供できる。 According to the present invention, it is possible to provide a hermetic packaging container that can ensure hermeticity between the lid and the container body without using packing.
図１は、実施形態に係る密閉包装容器の斜視図である。FIG. 1 is a perspective view of the hermetic packaging container according to the embodiment. 図２は、図１に示すＩＩ－ＩＩラインに沿う部分断面図である。FIG. 2 is a partial cross-sectional view taken along the line II-II shown in FIG. 図３は、図３に示すＩＩＩ－ＩＩＩラインに沿う断面図である。3 is a cross-sectional view taken along the line III-III shown in FIG. 図４Ａは、実施形態に係る密閉包装容器における蓋体の取り付け過程を説明する図である。Drawing 4A is a figure explaining the attachment process of the lid in the airtight packaging container concerning an embodiment. 図４Ｂは、図４Ａに続く蓋体の取り付け過程を説明する図である。FIG. 4B is a diagram for explaining the lid attachment process following FIG. 4A. 図４Ｃは、図４Ｂに続く蓋体の取り付け過程を説明する図である。FIG. 4C is a diagram illustrating a process of attaching the lid body following FIG. 4B. 図４Ｄは、図４Ｃに続く蓋体の取り付け過程を説明する図である。FIG. 4D is a diagram illustrating a process of attaching the lid body following FIG. 4C. 図５は、図４Ｂ～図４Ｃに示した蓋体の取り付け過程の詳細を説明する図である。FIG. 5 is a diagram for explaining the details of the lid attachment process shown in FIGS. 4B to 4C. 図６は、比較例１に係る包装容器を示す部分断面図である。6 is a partial cross-sectional view showing a packaging container according to Comparative Example 1. FIG. 図７は、比較例２に係る包装容器を示す部分断面図である。FIG. 7 is a partial cross-sectional view showing a packaging container according to Comparative Example 2. 図８は、従来の密閉包装容器を示す部分断面図である。FIG. 8 is a partial cross-sectional view showing a conventional hermetic packaging container.
　＜１．密閉包装容器の構成＞
　図１は、実施形態に係る密閉包装容器の斜視図であり、図２は、図１に示すＩＩ－ＩＩラインに沿う部分断面図であり、図３は、図３に示すＩＩＩ－ＩＩＩラインに沿う断面図である。 <1. Structure of sealed packaging container>
1 is a perspective view of a hermetic packaging container according to the embodiment, FIG. 2 is a partial cross-sectional view taken along line II-II shown in FIG. 1, and FIG. 3 is taken along line III-III shown in FIG. It is sectional drawing which follows.
　密閉包装容器１は、内容物を密閉状態に収容するためのものであり、容器本体２と、螺合により容器本体２に着脱自在に取り付けられる蓋体３とを備える。 The hermetic packaging container 1 is for containing the contents in a hermetically sealed state, and includes a container body 2 and a lid 3 that is detachably attached to the container body 2 by screwing.
　容器本体２は、ポリエチレンテレフタレート等の樹脂材料よりなるカップ状の成形品であり、開放端と底部５とを有する。より詳細には、容器本体２は、開放端を含む円筒形状の第１の円筒部１８と、第１の円筒部１８の底部５側に接続される円筒形状の第２の円筒部１９と、第２の円筒部１９に接続され、底部５を有する胴部２２とを有する。本実施形態では、第１の円筒部１８と第２の円筒部１９とは、段差を介して接続されており、第２の円筒部１９の内径は、第１の円筒部１８の内径より小さく設定されている。第１の円筒部１８の外面には、開放端の全周に沿って凸条１０が設けられている。尚、胴部２２には、容器本体２の剛性を向上させるためのリブ４ａ～４ｂが設けられている。 The container body 2 is a cup-shaped molded product made of a resin material such as polyethylene terephthalate, and has an open end and a bottom portion 5. More specifically, the container body 2 includes a cylindrical first cylindrical portion 18 including an open end, a cylindrical second cylindrical portion 19 connected to the bottom 5 side of the first cylindrical portion 18, and The body 22 is connected to the second cylindrical portion 19 and has the bottom portion 5. In the present embodiment, the first cylindrical portion 18 and the second cylindrical portion 19 are connected via a step, and the inner diameter of the second cylindrical portion 19 is smaller than the inner diameter of the first cylindrical portion 18. Is set. On the outer surface of the first cylindrical portion 18, a ridge 10 is provided along the entire circumference of the open end. The body 22 is provided with ribs 4a to 4b for improving the rigidity of the container body 2.
　蓋体３は、ポリエチレンやポリプロピレン等の樹脂材料よりなる成形品であり、天板１１と、天板１１の外周縁に接続される円筒形状の周壁１２と、インナーリング１４と、コンタクトリング１５とを有する。 The lid 3 is a molded product made of a resin material such as polyethylene or polypropylene, and includes a top plate 11, a cylindrical peripheral wall 12 connected to the outer peripheral edge of the top plate 11, an inner ring 14, and a contact ring 15. Have
　インナーリング１４は、天板１１の内面に接続されるほぼ円筒形状の部材である。インナーリング１４の外周面は、図２に示すように、縦断面の外郭線が円弧状または楕円弧状の曲面形状を有する。インナーリング１４の外径の最大値（以下、「最外径」という）は、容器本体２の第１の円筒部１８の内径より小さく、かつ、第２の円筒部１９の内径より大きくなるように設計されている。したがって、容器本体２に蓋体３を螺合させた状態では、図２に示すように、インナーリング１４が、容器本体２の第２の円筒部１９によって圧縮されて第２の円筒部１９の内周面に密着し、容器本体２と蓋体３との間を密閉する。 The inner ring 14 is a substantially cylindrical member connected to the inner surface of the top plate 11. As shown in FIG. 2, the outer peripheral surface of the inner ring 14 has a curved shape in which the outline of the longitudinal section is an arc shape or an elliptical arc shape. The maximum value of the outer diameter of the inner ring 14 (hereinafter referred to as “outermost diameter”) is smaller than the inner diameter of the first cylindrical portion 18 of the container body 2 and larger than the inner diameter of the second cylindrical portion 19. Designed to. Therefore, in a state where the lid 3 is screwed to the container main body 2, the inner ring 14 is compressed by the second cylindrical portion 19 of the container main body 2 as shown in FIG. It is in close contact with the inner peripheral surface, and the space between the container body 2 and the lid 3 is sealed.
　コンタクトリング１５は、蓋体３の天板１１の内面から突出すると共に、所定間隔を空けてインナーリング１４を取り囲むように形成されている。コンタクトリング１５は、容器本体２に蓋体３を螺合させた際に、第１の円筒部１８の開放端面に当接して、蓋体２の締め込み時の回転終了位置を規定するために設けられている。 The contact ring 15 protrudes from the inner surface of the top plate 11 of the lid 3 and is formed so as to surround the inner ring 14 with a predetermined interval. The contact ring 15 abuts on the open end surface of the first cylindrical portion 18 when the lid 3 is screwed into the container body 2, and defines the rotation end position when the lid 2 is tightened. Is provided.
　周壁１２のうち、天板１１との接続箇所近傍には、肉厚部２３が設けられている。肉厚部２３を設けることによって、インナーリング１４と周壁１２の内周面との間隔が天板１１の内面に近づくにつれて狭まっている。また、周壁の外面には、図１に示すように、蓋体３の開閉時の手掛かりとなるローレットが設けられている。このローレットは、蓋体３を開方向に回転させるときに指に加わる抵抗力が、蓋体３を閉方向に回転させるときに指に加わる抵抗力より大きくなるように、断面形状がほぼ三角形状に形成されている。このようなローレットを設けることにより、蓋体３を開く際には力が掛かりやすくなるので、後述する第２の凸条９ａ及び９ｂが第１の凸部８ａ及び８ｂを乗り越えやすくすることができ、蓋体３を閉じる際には力が掛かりすぎないので、再封時に必要以上に蓋体３が締め込まれて容器本体２と蓋体３との螺合構造が破壊されることを防止できる。 In the peripheral wall 12, a thick portion 23 is provided in the vicinity of the connection portion with the top plate 11. By providing the thick portion 23, the distance between the inner ring 14 and the inner peripheral surface of the peripheral wall 12 becomes narrower as it approaches the inner surface of the top plate 11. Further, as shown in FIG. 1, a knurling is provided on the outer surface of the peripheral wall as a clue when the lid 3 is opened and closed. This knurl has a substantially triangular cross section so that the resistance force applied to the finger when the lid 3 is rotated in the opening direction is greater than the resistance force applied to the finger when the lid 3 is rotated in the closing direction. Is formed. By providing such a knurl, a force is easily applied when the lid 3 is opened, so that second ridges 9a and 9b to be described later can easily get over the first protrusions 8a and 8b. When the lid 3 is closed, too much force is not applied, so that it is possible to prevent the lid 3 from being tightened more than necessary at the time of resealing and the screwed structure between the container body 2 and the lid 3 being destroyed. .
　図２に示すように、容器本体２の第２の円筒部１９の外周面には、雄ねじ７が設けられ、蓋体３の周壁１２の内周面には、雄ねじ７と螺合する雌ねじ１３が設けられている。本実施形態では、雄ねじ７及び雌ねじ１３は、２条ねじである。 As shown in FIG. 2, a male screw 7 is provided on the outer peripheral surface of the second cylindrical portion 19 of the container body 2, and a female screw 13 that is threadedly engaged with the male screw 7 on the inner peripheral surface of the peripheral wall 12 of the lid 3. Is provided. In the present embodiment, the male screw 7 and the female screw 13 are double threads.
　図３に示すように、容器本体２の第２の円筒部１９の外周面には、一対の第１の凸部８ａ及び８ｂと、一対の凸条９ａ及び９ｂとが設けられている。また、蓋体３の周壁１２の内周面には、一対の第２の凸部１６ａ及び１６ｂが設けられている。 As shown in FIG. 3, a pair of first convex portions 8 a and 8 b and a pair of convex strips 9 a and 9 b are provided on the outer peripheral surface of the second cylindrical portion 19 of the container body 2. A pair of second convex portions 16 a and 16 b are provided on the inner peripheral surface of the peripheral wall 12 of the lid 3.
　第１の凸部８ａ及び８ｂは、第２の円筒部１９の外周面上の一部及び当該一部と対向する他の一部にそれぞれ配置され、容器本体２の中心軸ＡＸを挟んで第２の円筒部１９の直径方向に整列している。また、第１の凸部８ａ及び８ｂは、容器本体２に蓋体３を完全に締め込んだ状態において、図３に示すように、蓋体３の周壁１２の内周面に当接する。第２の凸部１６ａ及び１６ｂも同様に、周壁１２の内周面上の一部及び当該一部と対向する他の一部にそれぞれ配置され、容器本体２の中心軸ＡＸを挟んで第２の円筒部１９の直径方向に整列している。 The first convex portions 8a and 8b are respectively arranged on a part on the outer peripheral surface of the second cylindrical part 19 and another part facing the part, and the first convex parts 8a and 8b are arranged with the central axis AX of the container body 2 interposed therebetween. The two cylindrical portions 19 are aligned in the diameter direction. Moreover, the 1st convex parts 8a and 8b contact | abut on the internal peripheral surface of the surrounding wall 12 of the cover body 3 in the state which fastened the cover body 3 to the container main body 2, as shown in FIG. Similarly, the second convex portions 16a and 16b are respectively arranged on a part on the inner peripheral surface of the peripheral wall 12 and on another part facing the part, and the second convex parts 16a and 16b are arranged with the center axis AX of the container body 2 interposed therebetween. The cylindrical portions 19 are aligned in the diameter direction.
　第１の凸部８ａ及び８ｂは、第２の凸部１６ａ及び１６ｂと共にロック機構を構成する。より詳細には、第１の凸部８ａ及び８ｂの開方向側の部分には、傾斜面２０ａ及び２０ｂがそれぞれ設けられ、第１の凸部８ａ及び８ｂの閉方向側の部分には、平坦面２１ａ及び２１ｂがそれぞれ設けられている。ここで、傾斜面２０ａ及び２０ｂは、中心軸ＡＸを含む平面に対して傾斜した面であって、開方向に向かうにつれて、第２の円筒部１９の外面からの高さ（第２の円筒部１９の直径方向の高さ）が減少する面である。一方、平坦面２１ａ及び２１ｂは、中心軸ＡＸを含む平面とほぼ平行な面である。 The first convex portions 8a and 8b constitute a lock mechanism together with the second convex portions 16a and 16b. More specifically, inclined surfaces 20a and 20b are provided in the opening direction side portions of the first protrusions 8a and 8b, respectively, and flat portions are provided in the closing direction side portions of the first protrusions 8a and 8b. Surfaces 21a and 21b are respectively provided. Here, the inclined surfaces 20a and 20b are surfaces inclined with respect to a plane including the central axis AX, and the height from the outer surface of the second cylindrical portion 19 (second cylindrical portion as it goes in the opening direction). 19 is a surface on which the height in the diametrical direction 19 decreases. On the other hand, the flat surfaces 21a and 21b are surfaces substantially parallel to a plane including the central axis AX.
　蓋体３を容器本体２に対して回転させると、蓋体３に設けられた第２の凸部１６ａ及び１６ｂは、蓋体３の周壁１２の変形を伴いながら、第１の凸部８ａ及び８ｂを乗り越える。第１の凸部８ａ及び８ｂの閉方向側の部分に、傾斜面２０ａ及び２０ｂを設けることによって、蓋体３を閉める際には、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越えやすくなる。一方、第１の凸部８ａ及び８ｂの開方向側の部分には、平坦面２１ａ及び２１ｂを設けているので、蓋体３を開方向に回転させる際には、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂの開方向へと移動するのに対して抵抗力を生じるため、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越えにくくなる。したがって、蓋体３を閉めて第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを一旦乗り越えた後は、蓋体３が開いてしまうことを抑制できる。尚、第１の凸部８ａ及び８ｂと第２の凸部１６ａ及び１６ｂとで構成されるロック機構と、蓋体３の密閉状態との関係の詳細については後述する。 When the lid 3 is rotated with respect to the container body 2, the second convex portions 16 a and 16 b provided on the lid 3 are deformed with the peripheral wall 12 of the lid 3, and the first convex portion 8 a and Get over 8b. When the lid 3 is closed by providing the inclined surfaces 20a and 20b on the closing direction side portions of the first convex portions 8a and 8b, the second convex portions 16a and 16b become the first convex portion 8a. And it becomes easy to get over 8b. On the other hand, since flat surfaces 21a and 21b are provided in the opening direction side portions of the first protrusions 8a and 8b, when the lid 3 is rotated in the opening direction, the first protrusions 8a and 8b Since 8b moves in the opening direction of the second convex portions 16a and 16b, a resistance force is generated, so that the second convex portions 16a and 16b are difficult to get over the first convex portions 8a and 8b. Therefore, after the lid 3 is closed and the second convex portions 16a and 16b once get over the first convex portions 8a and 8b, the lid 3 can be prevented from opening. In addition, the detail of the relationship between the lock mechanism comprised by the 1st convex parts 8a and 8b and the 2nd convex parts 16a and 16b, and the sealing state of the cover body 3 is mentioned later.
　凸条９ａ及び９ｂは、第２の円筒部１９の外周面上の一部及び当該一部と対向する他の一部にそれぞれ配置され、容器本体２の中心軸ＡＸを挟んで第２の円筒部１９の直径方向に整列している。凸条９ａ及び９ｂは、第１の凸部８ａ及び８ｂとほぼ同じレベル（容器本体２の底部５からの高さがほぼ同じレベル）に形成されている。凸条９ａ及び９ｂは、容器本体２に蓋体３を完全に締め込んだ状態において、図３に示すように、蓋体３の周壁１２の内周面に当接する。凸条９ａ及び９ｂと、上述した第１の凸部８ａ及び８ｂとが、蓋体３の周壁１２の内周面に当接することによって、容器本体２に対する蓋体３の傾き、すなわち、容器本体２の中心軸ＡＸに対して蓋体３の中心軸が傾斜するような蓋体３の変位が抑制される。蓋体３の周壁１２に当接する凸条９ａ及び９ｂと凸部８ａ及び８ｂとがない場合、密閉包装容器１が落下するなどして蓋体３に衝撃が加わると、容器本体２に対して蓋体３が瞬間的に傾いて、密閉包装容器１の密閉性が損なわれ、液体の内容物が漏れ出す可能性がある。これに対して、本実施形態のように、凸条９ａ及び９ｂと凸部８ａ及び８ｂとを蓋体の周壁１２の内面に当接させることによって、蓋体３に瞬間的な衝撃が加わった場合でも、液体の内容物の漏れ出しを抑制することができる。 The ridges 9a and 9b are respectively arranged on a part on the outer peripheral surface of the second cylindrical part 19 and on another part facing the part, and the second cylinder sandwiching the central axis AX of the container body 2 The portions 19 are aligned in the diameter direction. The protrusions 9a and 9b are formed at substantially the same level as the first protrusions 8a and 8b (the height from the bottom 5 of the container body 2 is approximately the same level). As shown in FIG. 3, the protrusions 9 a and 9 b abut on the inner peripheral surface of the peripheral wall 12 of the lid body 3 in a state where the lid body 3 is completely fastened to the container body 2. The protrusions 9a and 9b and the first protrusions 8a and 8b described above are in contact with the inner peripheral surface of the peripheral wall 12 of the lid 3, whereby the inclination of the lid 3 with respect to the container body 2, that is, the container body The displacement of the lid 3 such that the central axis of the lid 3 is inclined with respect to the second central axis AX is suppressed. If there is no ridges 9a and 9b and projections 8a and 8b that contact the peripheral wall 12 of the lid 3 and the lid 3 is subjected to an impact, such as when the hermetic packaging container 1 is dropped, There is a possibility that the lid 3 is tilted momentarily, the hermeticity of the hermetic packaging container 1 is impaired, and the liquid contents leak out. On the other hand, instantaneous impact was applied to the lid 3 by bringing the ridges 9a and 9b and the projections 8a and 8b into contact with the inner surface of the peripheral wall 12 of the lid as in this embodiment. Even in this case, leakage of the liquid contents can be suppressed.
　＜２．密閉包装容器の締め込み過程の説明＞
　以下、図４Ａ～図４Ｄ及び図５を参照しながら、ここで、容器本体２に対する蓋体３の締め込み過程と、密閉包装容器１の密閉状態とについて説明する。 <2. Explanation of tightening process of sealed packaging container>
Hereinafter, the process of tightening the lid 3 with respect to the container body 2 and the sealed state of the sealed packaging container 1 will be described with reference to FIGS. 4A to 4D and FIG.
　図４Ａ～図４Ｄは、実施形態に係る密閉包装容器における蓋体の取り付け過程を説明する図である。 FIG. 4A to FIG. 4D are views for explaining the process of attaching the lid in the hermetic packaging container according to the embodiment.
　容器本体２を蓋体３で密閉するには、まず、図４Ａに示すように、蓋体３の周壁１２の内部に容器本体２の開放端部分を挿入する。容器本体２に対して蓋体３を閉方向に回転させると、図４Ｂに示すように、蓋体３のインナーリング１４の先端側の一部が容器本体２の内部に挿入される。更に蓋体３を閉方向に回転させると、図４Ｃに示すように、インナーリング１４のうち、外径が最も大きい部分（以下、「最外径部分」という）が容器本体２の第２の円筒部１９の内周面に接触する。更に蓋体３を閉方向に回転させると、図４Ｄに示すように、蓋体３の螺合に伴ってインナーリング１４が第２の円筒部１９の内周面に密着される。 In order to seal the container body 2 with the lid 3, first, as shown in FIG. 4A, the open end portion of the container body 2 is inserted into the peripheral wall 12 of the lid 3. When the lid 3 is rotated in the closing direction with respect to the container body 2, a part of the distal end side of the inner ring 14 of the lid 3 is inserted into the container body 2 as shown in FIG. 4B. When the lid 3 is further rotated in the closing direction, as shown in FIG. 4C, a portion of the inner ring 14 having the largest outer diameter (hereinafter referred to as “outermost diameter portion”) is the second portion of the container body 2. It contacts the inner peripheral surface of the cylindrical portion 19. When the lid 3 is further rotated in the closing direction, the inner ring 14 is brought into close contact with the inner peripheral surface of the second cylindrical portion 19 as the lid 3 is screwed as shown in FIG. 4D.
　図５は、図４Ｂ～図４Ｃに示した蓋体の取り付け過程の詳細を説明する図である。より詳細には、図５（ａ）～（ｄ）は、第１の凸部及び第２の凸部の位置関係を示した図であって、図３に対応する断面図である。また、図５（ｅ）～（ｈ）は、容器本体の開放端近傍の拡大断面図である。また、図５（ａ）～（ｄ）に示す状態と、図５（ｅ）～（ｈ）に示す状態とがそれぞれ対応する関係となっている。 FIG. 5 is a diagram for explaining the details of the process of attaching the lid shown in FIGS. 4B to 4C. More specifically, FIGS. 5A to 5D are views showing the positional relationship between the first protrusion and the second protrusion, and are cross-sectional views corresponding to FIG. FIGS. 5E to 5H are enlarged sectional views near the open end of the container body. Further, the states shown in FIGS. 5A to 5D and the states shown in FIGS. 5E to 5H correspond to each other.
　まず、図５（ａ）及び（ｂ）は、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂを乗り越えていない状態、すなわち、ロック機構によるロックが掛かっていない状態を示す図である。この状態では、図５（ｅ）及び（ｆ）に示すように、インナーリング１４の最外径部分が第１の円筒部１８の内部に位置しており、インナーリング１４の少なくとも一部と、第１の円筒部１８との間に隙間が形成されるため、容器本体２は蓋体３によって密閉されていない。インナーリング１４と第１の円筒部１８との間の隙間が、蓋体３の締め込み時には、容器本体２からの気体の排出路となるため、容器本体２の内部に存在する気体の圧縮が緩和され、蓋体３の締め込みトルクが大きくなることを抑制できる。特に、容器本体２に充填された液体の液面が高い場合には、蓋体３の締め込み時に、容器本体２に残存する気体の圧縮比が大きくなり、蓋体３の締め込みトルクが増加するが、蓋体の締め込み途中までインナーリング１４と第１の円筒部１８との間に隙間を確保することによって、締め込みトルクの増大を効果的に抑制できる。また、蓋体３の締め込み時に内圧増加が緩和されることによって、容器本体２の内面の開放端近傍に液体が付着している場合でも、当該付着した液体がインナーリング１４と第１の円筒部１８との間から噴き出してしまうことを抑制できる。 First, FIGS. 5A and 5B are views showing a state where the first protrusions 8a and 8b do not get over the second protrusions 16a and 16b, that is, a state where the lock mechanism is not locked. It is. In this state, as shown in FIGS. 5E and 5F, the outermost diameter portion of the inner ring 14 is located inside the first cylindrical portion 18, and at least a part of the inner ring 14, Since a gap is formed between the first cylindrical portion 18, the container body 2 is not sealed by the lid 3. Since the gap between the inner ring 14 and the first cylindrical portion 18 serves as a gas discharge path from the container body 2 when the lid 3 is tightened, the compression of the gas existing inside the container body 2 is prevented. It is relieved and it can control that the tightening torque of lid 3 becomes large. In particular, when the liquid level of the liquid filled in the container body 2 is high, the compression ratio of the gas remaining in the container body 2 increases when the lid 3 is tightened, and the tightening torque of the lid 3 increases. However, by securing a gap between the inner ring 14 and the first cylindrical portion 18 until the lid is tightened, an increase in tightening torque can be effectively suppressed. Further, when the lid 3 is tightened, the increase in internal pressure is alleviated, so that even when liquid is attached near the open end of the inner surface of the container body 2, the attached liquid remains in the inner ring 14 and the first cylinder. It can suppress ejecting from between the parts 18.
　次に、図５（ｃ）は、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂを乗り越えた直後の状態、すなわち、ロック機構によるロックが掛かった状態を示す図である。この状態では、図５（ｇ）に示すように、インナーリング１４の最外径部分が第２の円筒部１９の内部に挿入されて内周面に密着するため、容器本体２は蓋体３によって密閉された状態となる。尚、図５（ｂ）から図５（ｃ）に至る過程では、容器本体２の開放端近傍が蓋体３の周壁１２の肉厚部２３とインナーリング１４との間へと挿入される。 Next, FIG. 5C is a diagram showing a state immediately after the first convex portions 8a and 8b get over the second convex portions 16a and 16b, that is, a state in which the lock mechanism is locked. In this state, as shown in FIG. 5 (g), the outermost diameter portion of the inner ring 14 is inserted into the second cylindrical portion 19 and is in close contact with the inner peripheral surface. It will be in the state sealed by. In the process from FIG. 5B to FIG. 5C, the vicinity of the open end of the container body 2 is inserted between the thick portion 23 of the peripheral wall 12 of the lid 3 and the inner ring 14.
　次に、図５（ｄ）は、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂを乗り越えた後、蓋体３を更に所定の回転角度だけ回転させた状態、すなわち、蓋体３が完全に締め込まれた状態を示す図である。図５（ｃ）から図５（ｄ）に至る過程では、図５（ｈ）インナーリング１４の最外径部分とその近傍部分とが、第２の円筒部１９の内周面によって圧縮されながら第２の円筒部１９の内周面に接触する。また、圧縮を受けたインナーリング１４の反発力によって、容器本体２の開放端近傍が押し広げられ、容器本体２の開放端の外周に設けられた凸条１０が、蓋体３の周壁１２の肉厚部に当接する。図５（ｈ）に示す状態では、インナーリング１４と第２の円筒部１９との密着に加えて、第１の円筒部１８の開放端近傍の外周面と、蓋体３の周壁１２に設けられた肉厚部２３との密着によっても密閉性が確保される。尚、図５（ｈ）に示す状態では、コンタクトリング１５が容器本体２の開放端面に当接することによって、蓋体３の閉方向への更なる回転が規制されている。 Next, FIG. 5 (d) shows a state in which the lid 3 is further rotated by a predetermined rotation angle after the first convex portions 8a and 8b get over the second convex portions 16a and 16b, that is, the lid It is a figure which shows the state by which the body 3 was tightened completely. In the process from FIG. 5C to FIG. 5D, the outermost diameter portion of the inner ring 14 and the vicinity thereof are compressed by the inner peripheral surface of the second cylindrical portion 19 in FIG. It contacts the inner peripheral surface of the second cylindrical portion 19. Further, the vicinity of the open end of the container body 2 is expanded by the repulsive force of the compressed inner ring 14, and the ridges 10 provided on the outer periphery of the open end of the container body 2 are formed on the peripheral wall 12 of the lid 3. Contact the thick part. In the state shown in FIG. 5 (h), in addition to the close contact between the inner ring 14 and the second cylindrical portion 19, the outer peripheral surface near the open end of the first cylindrical portion 18 and the peripheral wall 12 of the lid 3 are provided. The tightness is also secured by the close contact with the thick portion 23 formed. In the state shown in FIG. 5 (h), the contact ring 15 is in contact with the open end surface of the container body 2, so that further rotation of the lid 3 in the closing direction is restricted.
　＜３．効果等＞
　以上説明したように、本実施形態に係る密閉包装容器１では、インナーリング１４の最外径を、容器本体２の第１の円筒部１８の内径より小さく、かつ、第２の円筒部１９の内径より大きく設計しているので、蓋体３を締め込む過程では、容器本体２内の気体の圧縮を緩和して締め込みトルクの増加を抑制でき、蓋体３を締め込んだ状態では、インナーリング１４の最外径部分が第２の円筒部１９の内周面に密着して容器本体２を密閉することができる。したがって、本実施形態によれば、パッキンを用いることなく、蓋体３と容器本体２とで密閉性が高く、かつ、蓋体３の締め込み時の抵抗が小さな閉めやすい密閉包装容器１を実現できる。 <3. Effect>
As described above, in the sealed packaging container 1 according to the present embodiment, the outermost diameter of the inner ring 14 is smaller than the inner diameter of the first cylindrical portion 18 of the container body 2 and the second cylindrical portion 19 Since it is designed to be larger than the inner diameter, in the process of tightening the lid 3, the compression of the gas in the container body 2 can be relaxed to prevent an increase in tightening torque, and when the lid 3 is tightened, the inner The outermost diameter portion of the ring 14 can be in close contact with the inner peripheral surface of the second cylindrical portion 19 to seal the container body 2. Therefore, according to this embodiment, without using packing, the hermetic packaging container 1 having a high sealing property between the lid body 3 and the container body 2 and having a small resistance when the lid body 3 is tightened is easily realized. it can.
　また、本実施形態では、蓋体３の閉方向への回転に伴って、蓋体３に設けられた第２の凸部１６ａ及び１６ｂが容器本体２に設けられた第１の凸部８ａ及び８ｂを乗り越えた後、更に所定の回転角度だけ蓋体３が回転可能となるように、第１の凸部８ａ及び８ｂと第２の凸部１６ａ及び１６ｂとの位置関係が規定されている。言い換えれば、蓋体３の締め込みが停止する第２の凸部１６ａ及び１６ｂの回転位置（図５（ｄ）よりも開方向側の回転位置（図５（ｃ））で第１の凸部８ａ及び８ｂを乗り越えるように構成されている。蓋体３の締め込みが停止する回転位置及びその直前では蓋体３の締め込みトルクが大きくなっている。したがって、仮に、蓋体３の締め込みが停止する回転位置またはその直前で、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越えるように構成した場合、大きくなった蓋体３の締め込みトルクの影響により、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越える際のクリック感が使用者の手に伝わりにくくなることが考えられる。この場合、使用者は、蓋体３によって容器本体２が密閉されたか否かを把握しづらいため、結果的に蓋体３の締め込みが十分でなく、再封後に液体の漏れに繋がる場合がある。これに対して、本実施形態では、蓋体３の締め込みトルクが大きくなる前に、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越えるように構成することで、再封時に使用者にとってクリック感を感じやすくし、密閉状態となったか否かを把握しやすくすることができる。また、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越えた後に所定の回転角度だけ蓋体３を締め込むことによって、インナーリング１４の最外径部分の容器本体２への挿入量と、第２の円筒部１９の内周面に対する密着面積を大きくすることができるので、密閉包装容器１の密閉性を向上させることができる。 In the present embodiment, as the lid body 3 rotates in the closing direction, the second convex portions 16a and 16b provided on the lid body 3 are replaced with the first convex portions 8a and 16b provided on the container body 2. After overcoming 8b, the positional relationship between the first convex portions 8a and 8b and the second convex portions 16a and 16b is defined so that the lid 3 can further rotate by a predetermined rotation angle. In other words, the first convex portion at the rotational position of the second convex portions 16a and 16b where the tightening of the lid 3 stops (the rotational position on the opening direction side (FIG. 5C) from FIG. 5D). 8a and 8b are arranged so that the tightening torque of the lid body 3 is increased immediately before and at the rotational position where the tightening of the lid body 3 stops. When the second convex portions 16a and 16b are arranged to get over the first convex portions 8a and 8b at or just before the rotation position where the rotation stops, due to the influence of the tightening torque of the lid 3 that has increased, It is conceivable that the click feeling when the two convex portions 16a and 16b get over the first convex portions 8a and 8b is difficult to be transmitted to the user's hand. Whether or not is sealed As a result, it is difficult to tighten the lid 3 as a result, which may lead to liquid leakage after resealing, whereas in this embodiment, the tightening torque of the lid 3 is increased. Before, the second protrusions 16a and 16b are configured to get over the first protrusions 8a and 8b, making it easier for the user to feel a click when resealing, and whether or not it is in a sealed state. In addition, after the second protrusions 16a and 16b have passed over the first protrusions 8a and 8b, the lid 3 is tightened by a predetermined rotation angle, so that the inner ring 14 can be Since the amount of insertion of the outer diameter portion into the container body 2 and the close contact area with the inner peripheral surface of the second cylindrical portion 19 can be increased, the airtightness of the airtight packaging container 1 can be improved.
　また、本実施形態では、蓋体３に設けられた第２の凸部１６ａ及び１６ｂが容器本体２に設けられた第１の凸部８ａ及び８ｂを乗り越えた状態で、インナーリング１４の最外径部分が第２の円筒部１９の内周面に密着するように、容器本体２に対する蓋体３の回転量（締め込み量）と、容器本体２に対するインナーリング１４の挿入量とが対応付けられている。したがって、蓋体３の再封時には、使用者は、第２の凸部１６ａ及び１６ｂが第１の凸部８ａ及び８ｂを乗り越えた際に生じるクリック感を目安として蓋体３を締め込むことにより、密閉包装容器１を密閉状態とすることができる。 Further, in the present embodiment, the outermost outer ring of the inner ring 14 is in a state in which the second convex portions 16a and 16b provided on the lid body 3 get over the first convex portions 8a and 8b provided on the container body 2. The rotation amount (tightening amount) of the lid body 3 with respect to the container body 2 is associated with the insertion amount of the inner ring 14 with respect to the container body 2 so that the diameter portion is in close contact with the inner peripheral surface of the second cylindrical portion 19. It has been. Therefore, when the lid 3 is resealed, the user tightens the lid 3 with the click feeling generated when the second convex portions 16a and 16b get over the first convex portions 8a and 8b as a guide. The hermetic packaging container 1 can be sealed.
　また、本実施形態では、蓋体３の周壁１２の内周面とインナーリング１４の外周面との間隔が天板１１側に向かって小さくなるように、周壁１２の天板１１との接続箇所近傍に肉厚部２３を設けている。このように構成することで、蓋体３の締め込み時に容器本体２の開放端部分を周壁１２の肉厚部とインナーリング１４との間で拘束して蓋体３の傾きを抑制できるので、蓋体３の中心軸が容器本体２の中心軸ＡＸに対して傾いた状態で蓋体が締め込まれること（いわゆる、斜め締め）を抑制することができる。したがって、キャッピング装置を用いてキャッピングする際のキャッピング適性が向上する。 Moreover, in this embodiment, the connection location with the top plate 11 of the peripheral wall 12 so that the space | interval of the internal peripheral surface of the peripheral wall 12 of the cover body 3 and the outer peripheral surface of the inner ring 14 may become small toward the top plate 11 side. A thick portion 23 is provided in the vicinity. By configuring in this way, when the lid 3 is tightened, the open end portion of the container body 2 can be restrained between the thick portion of the peripheral wall 12 and the inner ring 14, and the inclination of the lid 3 can be suppressed. It is possible to prevent the lid body from being tightened (so-called oblique tightening) in a state where the central axis of the lid body 3 is inclined with respect to the central axis AX of the container body 2. Therefore, the capping suitability when capping using the capping device is improved.
　更に、本実施形態では、インナーリング１４の外周面が、縦断面の外郭線が円弧状または楕円弧状である曲面形状に形成されている。この利点を図６及び７を用いて説明する。 Furthermore, in this embodiment, the outer peripheral surface of the inner ring 14 is formed in a curved surface shape in which the outline of the longitudinal section is an arc shape or an elliptical arc shape. This advantage will be described with reference to FIGS.
　図６は、比較例１に係る包装容器を示す部分断面図であり、図７は、比較例２に係る包装容器を示す部分断面図である。 FIG. 6 is a partial cross-sectional view showing a packaging container according to Comparative Example 1, and FIG. 7 is a partial cross-sectional view showing a packaging container according to Comparative Example 2.
　比較例１に係る包装容器５１は、図６に示すように、上記の実施形態で説明したものと同じ容器本体２と、円周状の外面形状を有するインナーリング５４を設けた蓋体５３とを組み合わせたものである。また、比較例２に係る包装容器５６は、図７に示すように、上記の実施形態で説明したものと同じ容器本体２と、縦断面の外郭形状が外側に凸の折れ線状である曲面形状を有するインナーリング５８を設けた蓋体５７とを組み合わせたものである。 As shown in FIG. 6, the packaging container 51 according to Comparative Example 1 includes the same container body 2 as that described in the above embodiment, and a lid 53 provided with an inner ring 54 having a circumferential outer surface shape. Is a combination. Further, as shown in FIG. 7, the packaging container 56 according to the comparative example 2 has the same container body 2 as that described in the above embodiment, and a curved surface shape in which the outer shape of the longitudinal section is a polygonal line shape protruding outward. This is a combination with a lid 57 provided with an inner ring 58 having.
　本実施形態で説明した密閉包装容器１には、酒類等の液体の内容物が充填されるが、充填後の密閉包装容器１は、倉庫での保管や輸送の際に、４０～５０℃程度の環境温度に晒される場合がある。このような環境温度下では、インナーリングのように持続応力が加わっている樹脂部材は、クリープ変形しやすいという問題がある。 The hermetic packaging container 1 described in the present embodiment is filled with liquid contents such as liquor. The hermetic packaging container 1 after filling is about 40 to 50 ° C. when stored in a warehouse or transported. May be exposed to ambient temperatures. Under such an environmental temperature, there is a problem that the resin member to which the continuous stress is applied like the inner ring is likely to be creep-deformed.
　図６に示す比較例１の包装容器５１では、蓋体５３を最初に閉めた際には、インナーリング５４と容器本体２との接触面積を大きく取ることができる。しかしながら、クリープ変形によりインナーリング５４が内側に曲がると、インナーリング５４と容器本体２との接触箇所が容器本体２の開放端近傍のみとなってしまい、密閉性が低下する。また、比較例１に係る包装容器５１では、インナーリング５４と容器本体２との接触面積が大きいために、蓋体５３の開閉トルクが大きくなり、蓋体５３の開閉がしにくくなるという問題もある。更に、比較例１に係る包装容器５１では、インナーリング５４の外周面が円柱状であるため、インナーリング５４の競り量、すなわち、インナーリング５４の外径と容器本体２の内径との差を大きく取ることができず、密閉性の向上には限界がある。 In the packaging container 51 of Comparative Example 1 shown in FIG. 6, when the lid 53 is first closed, the contact area between the inner ring 54 and the container body 2 can be increased. However, when the inner ring 54 bends inward due to creep deformation, the contact portion between the inner ring 54 and the container main body 2 becomes only in the vicinity of the open end of the container main body 2, and the sealing performance is deteriorated. Moreover, in the packaging container 51 which concerns on the comparative example 1, since the contact area of the inner ring 54 and the container main body 2 is large, the problem that the opening / closing torque of the cover body 53 becomes large and it becomes difficult to open and close the cover body 53. is there. Furthermore, in the packaging container 51 according to the comparative example 1, the outer peripheral surface of the inner ring 54 is cylindrical, so that the amount of biding of the inner ring 54, that is, the difference between the outer diameter of the inner ring 54 and the inner diameter of the container body 2 is calculated. It cannot be taken large, and there is a limit to improving the sealing performance.
　また、図７に対する比較例２の包装容器５６では、インナーリング５８の最外径部分と容器本体２とがほぼ線接触しているため、蓋体５７の開閉時にインナーリング５８の最外径部分が摩耗や損傷を受けやすく、摩耗した場合には密閉性が低下してしまう。また、比較例２に係る包装容器５６では、クリープ変形によりインナーリング５８が内側へ曲がると、インナーリング５８と容器本体２との接触面積が低下するため、密閉性が低下する。また、比較例２に係る包装容器５６では、容器本体２の中心軸に対して蓋体５７の中心軸が傾いた場合にも、インナーリング５９と容器本体２との接触面積が低下して密閉性が低下する。 Moreover, in the packaging container 56 of the comparative example 2 with respect to FIG. 7, the outermost diameter part of the inner ring 58 and the container body 2 are almost in line contact with each other. Are susceptible to wear and damage, and if worn, the sealing performance is reduced. Moreover, in the packaging container 56 which concerns on the comparative example 2, since the contact area of the inner ring 58 and the container main body 2 will fall if the inner ring 58 bends inward by creep deformation, airtightness will fall. Further, in the packaging container 56 according to the comparative example 2, the contact area between the inner ring 59 and the container body 2 is reduced and sealed even when the center axis of the lid 57 is inclined with respect to the center axis of the container body 2. Sex is reduced.
　これに対して、本実施形態では、インナーリング１４の外周面が、縦断面の外郭線が円弧状または楕円弧状である曲面形状を有するように形成されている。このように構成すれば、容器本体２の第２の円筒部１９からインナーリング１４の直径方向に加わる圧縮力に対して、インナーリング１４の反発力が大きくなるので、クリープ変形に対する耐性が向上し、密閉性の低下を抑制できる。また、インナーリング１４の外周面を上述したような曲面形状とした場合、蓋体３の開閉トルクは蓋体の開閉に伴って徐々に増減するので、インナーリング１４の競り量、すなわち、インナーリング１４の最外径と第２の円筒部１９の内径との差を比較例１及び２と比べて大きく取ることができ、開閉のしやすさを損なうことなく、密閉性を向上できる。更に、インナーリング１４の外周面の縦断面の外郭線を円弧状または楕円弧状とした場合（つまり、インナーリング１４の外周面を球面状または回転楕円体状とした場合）、振動等によって、容器本体２の中心軸ＡＸに対して蓋体３の中心軸が傾く方向に回転移動した場合でも、インナーリング１４の外周面のいずれかの箇所が第２の円筒部１９の内面に接触し続けるため、密閉性の低下を抑制することができる。 In contrast, in the present embodiment, the outer peripheral surface of the inner ring 14 is formed so as to have a curved surface shape in which the outline of the longitudinal section is an arc shape or an elliptical arc shape. If comprised in this way, since the repulsive force of the inner ring 14 will become large with respect to the compressive force applied to the diameter direction of the inner ring 14 from the 2nd cylindrical part 19 of the container main body 2, the tolerance with respect to a creep deformation | transformation will improve. , The deterioration of hermeticity can be suppressed. Further, when the outer peripheral surface of the inner ring 14 has a curved shape as described above, the opening / closing torque of the lid 3 gradually increases / decreases as the lid opens / closes. The difference between the outermost diameter of 14 and the inner diameter of the second cylindrical portion 19 can be made larger than in Comparative Examples 1 and 2, and the sealing performance can be improved without impairing the ease of opening and closing. Furthermore, when the outline of the longitudinal section of the outer peripheral surface of the inner ring 14 is an arc or an elliptical arc (that is, when the outer peripheral surface of the inner ring 14 is a spherical shape or a spheroid), the container is caused by vibration or the like. Even when the center axis of the lid 3 is rotationally moved in a direction in which the center axis AX of the main body 2 is inclined, any part of the outer peripheral surface of the inner ring 14 is kept in contact with the inner surface of the second cylindrical portion 19. , It is possible to suppress a decrease in hermeticity.
　＜４．その他の変形例＞
　尚、本実施形態では、第１の円筒部１８と第２の円筒部１９とが段差を介して接続されているが、必ずしも段差を介して接続されている必要はなく、第１の円筒部１８の内径より、第２の円筒部１９の内径が小さくなるように形成されていれば良い。例えば、第１の円筒部１８を底部５側から開放端側に向かって内径が広がるテーパー状に形成したり、第１の円筒部１８と、第２の円筒部１９のうち第１の円筒部１８に接続される少なくとも一部とを底部５側から開放端側に向かって内径が広がるテーパー状に形成したりすることによって、段差を介さずに、第１の円筒部１８と第２の円筒部１９とを接続することができる。 <4. Other variations>
In the present embodiment, the first cylindrical portion 18 and the second cylindrical portion 19 are connected via a step, but the first cylindrical portion is not necessarily connected via a step. What is necessary is just to form so that the internal diameter of the 2nd cylindrical part 19 may become smaller than the internal diameter of 18. FIG. For example, the first cylindrical portion 18 is formed in a tapered shape having an inner diameter that widens from the bottom 5 side toward the open end side, or the first cylindrical portion of the first cylindrical portion 18 and the second cylindrical portion 19. The first cylindrical portion 18 and the second cylinder are formed without a step by forming at least a portion connected to the portion 18 in a tapered shape in which the inner diameter increases from the bottom 5 side toward the open end side. The unit 19 can be connected.
　また、本実施形態では、ロック機構を構成する第１の凸部８ａ及び８ｂの形状と、第２の凸部１６ａ及び１６ｂの形状とを特定したが、蓋体３の開方向への回転時にロック機構によって生じる抵抗力が、蓋体３の閉方向への回転時にロック機構によって生じる抵抗力より大きくなるように構成されている限り、第１の凸部８ａ及び８ｂの形状、並びに、第２の凸部１６ａ及び１６ｂの形状は任意で良い。また、本実施形態においては、第１の凸部８ａ及び８ｂの閉方向側の部分に平坦面２１ａ及び２１ｂを設けたが、第１の凸部８ａ及び８ｂの閉方向側の部分に傾斜面２０ａ及び２０ｂより傾斜の大きな傾斜面を設けても良い。あるいは、第１の凸部８ａ及び８ｂに傾斜面を設ける代わりに、第２の凸部１６ａ及び１６ｂに傾斜面を設けても良い。 Moreover, in this embodiment, although the shape of the 1st convex parts 8a and 8b which comprise a locking mechanism, and the shape of the 2nd convex parts 16a and 16b were specified, at the time of the rotation to the opening direction of the cover body 3 As long as the resistance force generated by the locking mechanism is configured to be larger than the resistance force generated by the locking mechanism when the lid 3 rotates in the closing direction, the shape of the first protrusions 8a and 8b, and the second The shapes of the convex portions 16a and 16b may be arbitrary. In the present embodiment, the flat surfaces 21a and 21b are provided on the first projections 8a and 8b on the closing direction side, but the first projections 8a and 8b are inclined on the closing direction side. An inclined surface having a larger inclination than 20a and 20b may be provided. Alternatively, instead of providing an inclined surface on the first convex portions 8a and 8b, an inclined surface may be provided on the second convex portions 16a and 16b.
　また、本実施形態では、ロック機構を設けた例を説明したが、ロック機構はなくても良い。この場合、容器本体２及び蓋体３との螺合構造は、３条以上のねじとしても良い。 In this embodiment, the example in which the lock mechanism is provided has been described, but the lock mechanism may not be provided. In this case, the screwed structure between the container body 2 and the lid 3 may be three or more screws.
　また、本実施形態では、第１の円筒部１８の内径をインナーリング１４の最外径より大きくした例を説明したが、第１の円筒部１８の内径はインナーリング１４の最外径以下であって、インナーリング１４の先端部分（図２における下端部分）の外径より小さな寸法としても良い。この場合でも、第１の円筒部１８にインナーリング１４を嵌合させる過程において、インナーリング１４の先端部分と第１の円筒部１８との間に隙間が生じるため、容器本体２の内部に残存する空気を排出して、内圧増加及びこれに起因する締め込みトルクの増大を抑制できる。 In the present embodiment, the example in which the inner diameter of the first cylindrical portion 18 is larger than the outermost diameter of the inner ring 14 has been described. However, the inner diameter of the first cylindrical portion 18 is less than or equal to the outermost diameter of the inner ring 14. And it is good also as a dimension smaller than the outer diameter of the front-end | tip part (lower end part in FIG. 2) of the inner ring 14. FIG. Even in this case, in the process of fitting the inner ring 14 to the first cylindrical portion 18, a gap is generated between the tip portion of the inner ring 14 and the first cylindrical portion 18, so that it remains in the container body 2. Thus, the increase in internal pressure and the increase in tightening torque due to this can be suppressed.
　また、本実施形態では、ロック機構によるロックが掛かっているとき、すなわち、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂを乗り越えている状態において、インナーリング１４の最外径部分が第２の円筒部１９の内周面に密着している例を説明した。このように構成するためには、ロック機構によるロックが掛かるのと同時に、すなわち、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂを乗り越えるのと同時に、インナーリング１４の最外径部分が第２の円筒部１９に密着するようにしても良いし、あるいは、ロック機構によるロックが掛かる前に、すなわち、第１の凸部８ａ及び８ｂが第２の凸部１６ａ及び１６ｂを乗り越える前に、インナーリング１４の最外径部分が第２の円筒部１９に密着するようにしても良い。 Further, in the present embodiment, when the lock mechanism is locked, that is, in a state where the first convex portions 8a and 8b get over the second convex portions 16a and 16b, the outermost diameter of the inner ring 14 The example in which the portion is in close contact with the inner peripheral surface of the second cylindrical portion 19 has been described. In order to configure in this way, the outer ring of the inner ring 14 is at the same time that the locking by the locking mechanism is applied, that is, at the same time that the first protrusions 8a and 8b get over the second protrusions 16a and 16b. The diameter portion may be in close contact with the second cylindrical portion 19, or before the locking by the locking mechanism, that is, the first convex portions 8a and 8b are connected to the second convex portions 16a and 16b. The outermost diameter portion of the inner ring 14 may be in close contact with the second cylindrical portion 19 before getting over.
　また、第１の円筒部１８の内径をインナーリング１４の最外径以下とする場合は、第１の円筒部１８にインナーリング１４を嵌合させる過程において、インナーリング１４の外周面が第１の円筒部１８の一部とも密着することで密閉性を生じるように構成しても良い。 Further, when the inner diameter of the first cylindrical portion 18 is set to be equal to or smaller than the outermost diameter of the inner ring 14, the outer peripheral surface of the inner ring 14 is the first in the process of fitting the inner ring 14 to the first cylindrical portion 18. The cylindrical portion 18 may be in close contact with a part of the cylindrical portion 18 so as to produce a hermetic seal.
　本発明は、焼酎、日本酒、ワイン等の液体を密閉包装するための包装容器に利用できる。 The present invention can be used in a packaging container for hermetically packaging liquids such as shochu, sake, wine and the like.
１　密閉包装容器
２　容器本体
３　蓋体
５　底部
８ａ、８ｂ　第１の凸部
１１　天板
１２　周壁
１４　インナーリング
１６ａ、１６ｂ　第２の凸部
１８　第１の円筒部
１９　第２の円筒部
２３　肉厚部 DESCRIPTION OF SYMBOLS 1 Sealed packaging container 2 Container main body 3 Cover body 5 Bottom part 8a, 8b 1st convex part 11 Top plate 12 Perimeter wall 14 Inner ring 16a, 16b 2nd convex part 18 1st cylindrical part 19 2nd cylindrical part 23 Meat Thick part

Claims (4)

  1. 　内容物を密閉状態に収容する密閉包装容器であって、
    　開放端及び底部を有するカップ状の容器本体と、
    　前記容器本体に螺合によって着脱自在に取り付けられ、前記開放端を封止する蓋体とを備え、
    　前記容器本体は、
    　　前記開放端を含み、第１の内径を有する円筒形状の第１の円筒部と、
    　　前記第１の円筒部より前記底部側に位置し、前記第１の内径より小さな第２の内径を有する第２の円筒部と、
    　　前記第２の円筒部に接続され、前記底部を有する胴部とを含み、
    　前記蓋体は、
    　　天板と、
    　　前記天板の外周縁に接続される周壁と、
    　　前記天板の内面に設けられ、最外径が前記第２の内径より大きいインナーリングとを含み、
    　前記インナーリングは、前記蓋体を前記容器本体に取り付ける際の螺合に伴って前記第２の円筒部の内周面に密着されて、前記容器本体を密閉する、密閉包装容器。     A hermetically sealed container for containing the contents in a sealed state,
    A cup-shaped container body having an open end and a bottom;
    A detachably attached to the container body by screwing, and a lid for sealing the open end,
    The container body is
    A cylindrical first cylindrical portion including the open end and having a first inner diameter;
    A second cylindrical portion located on the bottom side of the first cylindrical portion and having a second inner diameter smaller than the first inner diameter;
    Including a body portion connected to the second cylindrical portion and having the bottom portion;
    The lid is
    With the top plate,
    A peripheral wall connected to the outer peripheral edge of the top plate;
    An inner ring provided on the inner surface of the top plate, the outermost diameter being larger than the second inner diameter;
    The inner ring is a hermetically sealed container that seals the container body by being in close contact with the inner peripheral surface of the second cylindrical portion as the lid is screwed to the container body.
  2. 　前記容器本体は、前記第２の円筒部の外周面に設けられる少なくとも１つの第１の凸部を更に含み、
    　前記蓋体は、前記周壁の内周面に設けられ、前記蓋体の開方向または閉方向への回転に伴って、前記第１の凸部を乗り越える少なくとも１つの第２の凸部を更に含み、
    　前記蓋体の前記閉方向への回転に伴って前記第２の凸部が前記第１の凸部を乗り越えた状態では、前記インナーリングの最も外径の大きな部分が前記第２の円筒部に挿入されており、前記第２の凸部が前記第１の凸部を乗り越えた後、更に、前記蓋体が所定の回転角だけ前記閉方向に回転可能である、請求項１に記載の密閉包装容器。     The container body further includes at least one first convex portion provided on an outer peripheral surface of the second cylindrical portion,
    The lid further includes at least one second convex portion provided on an inner peripheral surface of the peripheral wall and overcoming the first convex portion as the lid rotates in an opening direction or a closing direction. ,
    In a state where the second convex portion has overcome the first convex portion as the lid body rotates in the closing direction, a portion having the largest outer diameter of the inner ring is formed on the second cylindrical portion. 2. The hermetically sealed structure according to claim 1, wherein the lid is further rotatable in the closing direction by a predetermined rotation angle after being inserted and after the second convex portion gets over the first convex portion. Packaging container.
  3. 　前記インナーリングの外面は、縦断面の外郭線が円弧である曲面状に形成される、請求項１または２に記載の密閉包装容器。 The hermetic packaging container according to claim 1 or 2, wherein an outer surface of the inner ring is formed in a curved shape in which a contour line of a longitudinal section is an arc.
  4. 　前記蓋体の前記周壁のうち、前記天板との接続箇所近傍には、前記周壁の内周面と前記インナーリングの外周面との間隔が前記天板の内面側に向かって狭まるように形成された肉厚部が設けられる、請求項１～３のいずれかに記載の密閉包装容器。 Of the peripheral wall of the lid, in the vicinity of the connection point with the top plate, the distance between the inner peripheral surface of the peripheral wall and the outer peripheral surface of the inner ring is formed to narrow toward the inner surface side of the top plate. The hermetic packaging container according to any one of claims 1 to 3, wherein the thickened portion is provided.
PCT/JP2015/005484 2014-11-28 2015-10-30 Sealed packaging container WO2016084307A1 (en)

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JP2014-242133 2014-11-28
JP2014242133A JP6044622B2 (en) 2014-11-28 2014-11-28 Sealed packaging container

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