EP0232856A2 - Récipient - Google Patents

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Publication number
EP0232856A2
EP0232856A2 EP87101544A EP87101544A EP0232856A2 EP 0232856 A2 EP0232856 A2 EP 0232856A2 EP 87101544 A EP87101544 A EP 87101544A EP 87101544 A EP87101544 A EP 87101544A EP 0232856 A2 EP0232856 A2 EP 0232856A2
Authority
EP
European Patent Office
Prior art keywords
screw
container
main body
cap member
container main
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP87101544A
Other languages
German (de)
English (en)
Other versions
EP0232856A3 (en
EP0232856B1 (fr
Inventor
Fumihiko Yoshiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Publication of EP0232856A2 publication Critical patent/EP0232856A2/fr
Publication of EP0232856A3 publication Critical patent/EP0232856A3/en
Application granted granted Critical
Publication of EP0232856B1 publication Critical patent/EP0232856B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • B65D41/0471—Threaded or like caps or cap-like covers secured by rotation with means for positioning the cap on the container, or for limiting the movement of the cap, or for preventing accidental loosening of the cap

Definitions

  • This invention relates to a container of the type in that a neck portion of a container main body is threadedly engaged with a cap member, and more particularly to a container, in which the threaded engagement between the container main body and the cap member is prevented from becoming loose.
  • Japanese utility model publication No.56-42187 discloses a loosening prevention device in which a number of projections for pressing the terminal end portion of a female screw are vertically spacedly arranged on a lower edge of the terminal end portion of a male screw.
  • Japanese utility model publication No. 56-48057 discloses a loosening prevention device in which a male screw is built up at its terminal end portion along its upper edge and spaces between adjacent screw threads are formed gradually narrower.
  • Japanese utility model publication No. 57-9239 descloses a loosening prevention device in which a screw thread having a lead angle 0° at the terminal end portion of a male screw, and this screw thread is made higher than other screw threads.
  • Japanese utility model publication No. 59-42342 discloses a loosening prevention device in which a step portion is provided at the terminal end portion of a screw thread, which continuously extends in such a manner as to fill root threads between screw threads.
  • Japanese utility model early laid-open publication No.55-145459 discloses a loosening prevention device in which the width of a screw thread is formed large at a terminal end portion of a male screw, a screw groove between adjacent screw threads is formed narrow.
  • Japanese utility model early laid-open publication No. 57-88750 discloses a manual-operated spray containerin which a check knob is formed on a thread line of a male screw.
  • the projections are readily worn or broken due to a number of repeated opening and closing operations and a loosening is readily taken place due to shock.
  • a container having a container main body and a cap member threadedly engagable with a neck portion of the container main body characterized in that at least one of male and female screws (internal and external threads) threadedly encaged with each other is formed as such that the width of a screw groove becomes gradually smaller as it goes toward the terminal end direction of the screw, and a pressure flank and a clearance flank of the male and female screws are contacted each other under pressure at a portion where the width of the screw groove is small at the end of a screwing operation.
  • Fig. 1 through 5 illustrate one embodiment of the present invention.
  • 1 denotes a container main body and 2 denotes a cap member.
  • the container main body 1 is formed around a neck portion 3 with a male screw 4.
  • the cap member 2 is formed at its inner surface with a female screw 5 for threadedly engaging with the male screw 4.
  • Both the male and female screws 4 and 5 are of buttless threads.
  • the female screw 5, like common female screws, is formed as such that the width of thread ridge, the width of the screw groove and the pitch of the screws are constant.
  • the male screw 4 is formed as such that the widths A 1 , A 2 of the screw grooves become gradually smaller as it goes toward the terminal end direction of the screw (A 1 > A 2 ) and not only pressure flanks 6, 7 of the male and female screws 4, 5 but also clearance flanks 8, 9 are contacted under pressure at a portion where the width of the screw groove is small when the threading engagement between the male and female screws is almost finished. Since the male screw 4 is formed as such that the configuration of the thread ridge is constant but, as described in the foregoing, the width of the screw groove becomes gradually smaller as it goes toward the terminal end direction of the screw, the pitch of the thread becomes gradually smaller as it goes toward the terminal end direction of the screw.
  • 10 denotes a neck ring (rachet structure for preventing a loosening to occur) provided at the outer peripheral portion of a basic portion (lower end portion) of the neck portion 3 of the container main body 1.
  • 11 denotes an inner ring (rachet structure for preventing a loosening to occur) provided at the inner peripheral portion of a lower end portion of the cap member 2 in such a manner as to correspond to the neck ring 10.
  • 12 denotes a contact ring provided on the ceiling portion of the cap member 2 in such a manner as to be vertically hung down from the ceiling portion and adapted to ensure a sealing between the cap member 2 and the container main body 1.
  • 13 denotes a projection vertically formed on the outer peripheral portion of the cap member 2 and adapted to serve for threadedly engaging the cap member 2 with the container main body 1.
  • the screwing operation can be easily started just as same as the case with the conventional one since the starting end portion of the male screw 4 on the container main body 1 and the starting end portion of the female screw 5 are formed same as the conventional male and female screws.
  • the width of the screw groove of the male screw 4 of the container main body 1 is formed in such a manner as to become gradually smaller as it goes toward the terminal end portion, while the female screw 5 of the cap member 2 is not formed as such as mentioned but formed same as that of a usual female screw.
  • the space between the clearance flank 9 at the starting end portion of the female screw 5 and the clearance flank 8 of the male screw 4 becomes gradually narrower, and the clearance flanks 8, 9 of the male and female screws 4, 5 are also caused to be contacted under pressure at the end of the screwing operation as the pressure flanks 6, 7 are. Finally, these are completely contacted under pressure as shown in Fig. 5, thereby to prevent an occurrence of a loosening of the cap member 2 from the container main body 1 with sure. And, simultaneously with the contact under pressure, the contact ring 12 of the cap member 2 is surely contacted under pressure with the top portion of the neck portion of the container main body 1, and the neck ring 10 of the container main body 1 is brought to be engagement with the inner ring 11 of the cap member 2. Accordingly, the sealing between the container main body 1 and the cap member 2 can be further ensured and a occurrence of the loosening of the cap member 2 from the container main body 1 can be more surely prevented.
  • the container main body 1 and the cap member 2 are preferably molded of a thermoplastic synthetic resin material having somewhat elasticity such as polypropylene, polyethylene, etc.
  • the materials of the container main body 1 and the cap member 2 are not limited to the above.
  • the container main body 1 and the cap member 2 are molded of such thermoplastic synthetic resin material because the width of the screw groove at the terminal end portion of the male screw 4 is made smaller than the width of the thread ridge at the terminal end portion of the female screw 5 (the space between the clearance flanks 8, 9 is set minus at the terminal end portions of the male and female screws 4, 5) and the fastening can be achieved in the wider range than the prior art, thereby to more effectively prevent at occurrence of the loosening of the cap member caused by shock.
  • Figs. 6 and 7 illustrate another embodiment of the present invention.
  • the container of this embodiment has the same sturucture as that of the container shown in Figs. 1 through 5 except that the configuration of the male screw 4 of the container main body 1 is modified and that the neck ring 10 and inner ring 11 are not provided. More specifically, the male screw 4 of this embodiment is formed as such that, as with the embodiment of Figs. 1 through 5, the widths A 1 , A 2 of the screw grooves are formed in such a manner as to become gradually smaller (A 1 > A 2 ) as it goes toward the terminal end portions of the screws. In order to obtain such screw grooves as mentioned, contrary to the embodiment of Figs.
  • the pitch B 1 of the clearance flank is made smaller than the pitch B 2 of the pressure flank (B 2 > B1 ) and the widths C 1 , C 2 , C 3 of the thread ridges are formed in such a manner as to become gradually larger (C 1 ⁇ C 2 ⁇ C 3 ) as it goes toward the terminal end portion of the screws.
  • the dotted line of Fig. 6 shows the conventional, commonly-used male screw 4.
  • Fig. 8 illustrates a further embodiment of the present invention.
  • the container of this embodiment is formed as such that the terminal end portion of the thread ridge of the male screw 4 of the container main body 1 of the embodiment shown in Figs. 1 through 5 is provided with step portions 14, 14 which are disposed in symmetric relation with respect to the central axis os the male screw 4 and continuously extending by partly filling the space between the screw threads (making the screw groove portion thick in wall), and at the end of the screwing operation, the thread ridge of a female screw (not shown) of the cap member is brought to be contacted under pressure with the step portions 14, 14, thereby to more effectively prevent an occurrence of the loosening of the cap member from the container main body 1.
  • Fig. 9 illustrates a still further embodiment of the present invention.
  • the container of this embodiment is formed as such that the terminal end portion of the thread ridge of the male screw 4 of the container main body 1 according to the embodiment of Figs. 6 and 7 are vertically spacedly provided at its lower and upper edges with a number of projections 15, 15... and at the end of the screwing operation, the thread ridge of a female screw (not shown) of the cap member is brought to be in point-contact with the projections 15, 15..., thereby to more effectively prevent an occurrence of the loosening of the cap member from the container main body 1.
  • Fig. 10 illustrates a yet further embodiment of the present invention.
  • the container according to this embodiment is formed as such that a trigger type sprayer 16 is detachably threadedly engaged with the container main body 1 through the cap member 2.
  • a trigger type sprayer 16 is detachably threadedly engaged with the container main body 1 through the cap member 2.
  • vibrations are readily taken place when the trigger type sprayer is operated and the cap member 2 is tended to be loosened.
  • the width of the screw groove is formed in such a manner as to become gradually smaller as it goes toward the terminal end portion of the screw in this embodiment same as the case with the afore-mentioned embodiments, the cap member 2 is not loosened.
  • the male screw 4 of the container main body 1 may be formed of a commonly-used male screw, and the width of the screw groove of the female screw 5 may be formed in such a manner as to become gradually smaller as it goes toward the terminal end portion of the screw, or otherwise the widths of the screw grooves of both the male and female screws may be formed in such a manner as to become gradually smaller as it goes toward the terminal end portions of the screws.
  • the screw around the neck portion 3 of the container main body 1 may be formed of a female screw, and the screw around the cap member 2 may be formed of a male screw.
  • the embodiment of Figs. 1 through 5 may be provided with the projections 15, 15, 15 of Fig. 9, or otherwise the embodiment of Figs. 6 and 7 may be provided with the step portions 14, 14 of Fig. 8.
  • male and female screws 4, 5 may be formed of multiple thread screws.
  • the container according to the present invention is constructed as such that the screws as a whole are gradually brought to be contacted under pressure according to advancement of the screwing operation. Accordingly, the container main body and cap member can be surely sealed.
  • the container main body and cap member are formed of a thermoplastic synthetic resin material having somewhat elasticity. Accordingly, the fastening can be achieved in the wider range than the prior art utilizing elastic deformation of screw, thereby to prevent an occurrence of the loosening of the cap member caused by shock.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
EP19870101544 1986-02-06 1987-02-05 Récipient Expired - Lifetime EP0232856B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16231/86U 1986-02-06
JP1986016231U JPH0426342Y2 (fr) 1986-02-06 1986-02-06

Publications (3)

Publication Number Publication Date
EP0232856A2 true EP0232856A2 (fr) 1987-08-19
EP0232856A3 EP0232856A3 (en) 1988-05-04
EP0232856B1 EP0232856B1 (fr) 1992-05-06

Family

ID=11910775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870101544 Expired - Lifetime EP0232856B1 (fr) 1986-02-06 1987-02-05 Récipient

Country Status (6)

Country Link
EP (1) EP0232856B1 (fr)
JP (1) JPH0426342Y2 (fr)
DE (1) DE3778722D1 (fr)
ES (1) ES2031078T3 (fr)
HK (1) HK75995A (fr)
PH (1) PH25709A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350415A1 (fr) * 1988-07-08 1990-01-10 Societe Nouvelle De Bouchons Plastiques S.N.B.P. Système d'obturation combinant une capsule à vis et le goulot fileté d'un récipient
EP0440480A2 (fr) * 1990-02-01 1991-08-07 Owens-Illinois Closure Inc., Emballage résistant aux enfants
US6854614B2 (en) 1999-11-05 2005-02-15 Rexam Medical Packaging, Inc. Closure having an improved thread design
CN102795393A (zh) * 2012-09-06 2012-11-28 湖南乐福地医药包材科技有限公司 瓶盖及具有该瓶盖的饮料包装

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2819071B2 (ja) * 1990-12-17 1998-10-30 オーエンス−イリノイ・クロージヤ・インコーポレーテツド 包装具
JP2005289499A (ja) * 2004-04-05 2005-10-20 Toyo Seikan Kaisha Ltd 容器の封鎖構造
JP5315098B2 (ja) * 2009-03-11 2013-10-16 株式会社フレッシュ ボトルセット
CN102815447B (zh) * 2012-09-06 2016-01-20 湖南乐福地医药包材科技有限公司 饮料包装

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399727A (fr) * 1964-04-09 1965-05-21 J P Grussen Ets Nouvelle capsule à double filetage
US4434917A (en) * 1981-05-26 1984-03-06 Yoshino Kogyosho Co., Ltd. Trigger-actuated atomizer
GB2171087A (en) * 1985-02-15 1986-08-20 Bridgeport Metal Goods Mfg Co Container and cap assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681050U (fr) * 1979-11-20 1981-07-01
JPS58113633U (ja) * 1982-01-23 1983-08-03 興亜硝子株式会社 瓶体首部の構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399727A (fr) * 1964-04-09 1965-05-21 J P Grussen Ets Nouvelle capsule à double filetage
US4434917A (en) * 1981-05-26 1984-03-06 Yoshino Kogyosho Co., Ltd. Trigger-actuated atomizer
GB2171087A (en) * 1985-02-15 1986-08-20 Bridgeport Metal Goods Mfg Co Container and cap assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350415A1 (fr) * 1988-07-08 1990-01-10 Societe Nouvelle De Bouchons Plastiques S.N.B.P. Système d'obturation combinant une capsule à vis et le goulot fileté d'un récipient
FR2633903A1 (fr) * 1988-07-08 1990-01-12 Bouchons Plastiques Systeme d'obturation combinant une capsule a vis et le goulot filete d'un recipient
EP0440480A2 (fr) * 1990-02-01 1991-08-07 Owens-Illinois Closure Inc., Emballage résistant aux enfants
EP0440480A3 (en) * 1990-02-01 1991-11-06 Owens-Illinois Closure Inc., Child resistant closure and package
US6854614B2 (en) 1999-11-05 2005-02-15 Rexam Medical Packaging, Inc. Closure having an improved thread design
CN102795393A (zh) * 2012-09-06 2012-11-28 湖南乐福地医药包材科技有限公司 瓶盖及具有该瓶盖的饮料包装
CN102795393B (zh) * 2012-09-06 2015-10-21 湖南乐福地医药包材科技有限公司 瓶盖及具有该瓶盖的饮料包装

Also Published As

Publication number Publication date
ES2031078T3 (es) 1992-12-01
JPS62127948U (fr) 1987-08-13
DE3778722D1 (de) 1992-06-11
HK75995A (en) 1995-05-26
EP0232856A3 (en) 1988-05-04
EP0232856B1 (fr) 1992-05-06
JPH0426342Y2 (fr) 1992-06-24
PH25709A (en) 1991-09-18

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