EP1897816A1 - Dispositif de verrouillage pour fermer un conténeur avec un couvercle - Google Patents

Dispositif de verrouillage pour fermer un conténeur avec un couvercle Download PDF

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Publication number
EP1897816A1
EP1897816A1 EP06120450A EP06120450A EP1897816A1 EP 1897816 A1 EP1897816 A1 EP 1897816A1 EP 06120450 A EP06120450 A EP 06120450A EP 06120450 A EP06120450 A EP 06120450A EP 1897816 A1 EP1897816 A1 EP 1897816A1
Authority
EP
European Patent Office
Prior art keywords
container
cap
locking
skirt
keys
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.)
Withdrawn
Application number
EP06120450A
Other languages
German (de)
English (en)
Inventor
Claus Schmidt Møller
Dennis Broberg
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.)
Nolato Cerbo AB
Original Assignee
Nolato Cerbo AB
Cerbo AB
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 Nolato Cerbo AB, Cerbo AB filed Critical Nolato Cerbo AB
Priority to EP06120450A priority Critical patent/EP1897816A1/fr
Publication of EP1897816A1 publication Critical patent/EP1897816A1/fr
Withdrawn legal-status Critical Current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
    • B65D41/06—Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating
    • 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
    • B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
    • B65D50/04—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one

Definitions

  • the present invention relates to a locking arrangement for detachably locking a cap on a container, the cap having a skirt and the container having an enclosure opening into an opening.
  • the locking arrangement comprises a number of keys provided on the outside of said enclosure, a number of slots provided on the inside of the skirt, and cooperative contact faces on the inside of the skirt and on the outside of the enclosure, respectively, said keys and slots being provided in an area having a substantially circular cross section and defining a central axis.
  • Each slot has an inlet at the free edge of the skirt for receiving a key and a locking section for detachably locking said key.
  • the present invention relates to a cap and a container comprising said locking arrangement.
  • Detachable caps are especially used for containers having a content which is not to be used at one time. Therefore, the cap must be capable of being put on the container and removed repeatedly. For this purpose threaded joints are typically used, which in some cases only are fragmentary to allow a cap to be screwed off and on quicker and more easily.
  • the content in a container can be dangerous.
  • Such containers must therefore be childproof to prevent children from getting hurt though contact with or eating some of the dangerous content.
  • An arrangement which is often used for bottles and containers having a dangerous content is a threaded joint with the internal thread located on a separate insert in the cap in an arrangement which requires that the cap is pressed towards the bottle. Thereby the insert is coupled to the cap and thus brought along when the cap is rotated to allow it to be screwed off.
  • a container made of an elastic material comprising a detachable cap with a skirt for closing an opening of an enclosure of the container.
  • On the inside of said skirt are a number of keys for engaging slots provided in a number of projections on the outside of the enclosure in the closed state.
  • a sealing ring in the cap cooperates with a taper on the enclosure of the container upon fastening and removal of the cap.
  • the sealing ring In the closed state in which the keys are in their slots, the sealing ring is kept in an elastically expanded state by the taper. Tensile stresses are therefore created in the sealing ring that, due to the angle the ring forms with the taper, will affect the cap with an axial spring power that keeps the keys in the slots.
  • the contact faces of the cap are made on the inside of the skirt and the contact faces of the container are provided on the projections at a greater distance from the central axis than the contact faces of the cap.
  • the design requires that the cap and container and thereby their respective contact faces are pressed against each other to thereby allow the keys to be rotated into engagement with locking recesses the slots when the cap is rotated in relation to the container.
  • the skirt and enclosure are deformed elastically during this, whereby they are loaded by stresses of a component of force that acts on the cap and container in each their direction.
  • the keys are provided on the inside of the skirt, and said keys are arranged to engage with the recesses provided on projections arranged on the outside of the enclosure, for detachably locking the cap.
  • US 3,739,933 discloses a safety closure cap/container combination, where the inside of the skirt of the cap is provided with slots for receiving and locking keys provided on the outside of the container.
  • Resiliently deformable biasing means are provided on the inside of the cap and comprise a plurality of fingers. The biasing means are arranged to bias the cap axially away from the container and by means of the resulting force, each key is locked in a notch provided in each slot, whereby a childproof locking of the cap on the container is achieved.
  • US 5,529,202 discloses a closure for containers and the like, comprising a lid having a number of latches on the outside of the skirt of the lid, which latches are arranged to engage with a number of lugs provided on the interior wall of the container.
  • An upward basing force to the lid locks each lug in a latch, the basing force being created by the interaction of the upper lateral surface of the container with the lid, where a annular flange extends from the outermost periphery of the lid to overlap a portion of the skirt, and the outer upper periphery of the container is tapered outwardly to force the flange to flex when the lid is placed on the container, whereby an upward force to the lid is created.
  • AU 438,899 discloses a container and closure arrangement comprising a skirted cap, where the neck of the container comprises keys arranged to engage with slots provided on the inside of the skirt of the cap. Within the cap is a compressible resilient pad or spring arranged to bias the cap axially away from the container, whereby the key is locked in a slot.
  • the object of the invention is to provide a locking arrangement, which is childproof and inexpensive and easy to manufacture, and to provide a cap and container comprising said locking arrangement.
  • the contact faces provide the spring force to keep the key and locking section in a locked position.
  • the contact surfaces of the skirt and the container, respectively, are pressed against each other, thereby allowing the keys to be rotated into the inlet of the slots, when the cap is rotated in relation to the container, and into locking engagement with the locking section.
  • the skirt is deformed elastically during this, whereby it is loaded by stresses of a component of force that acts on the cap and container in each their direction.
  • the locking section comprises a receiving notch for receiving a key, into which the key is locked by the force created by said cooperative contact faces.
  • the locking section comprises a stop surface positioned towards the inlet, for preventing the key from moving laterally towards the inlet, when received in the receiving notch, and advantageously the locking section comprises a guiding surface opposing said stop surface, for guiding the key into the notch.
  • the skirt of the cap is deformable.
  • the skirt is conical and the keys act as the contact faces of the container.
  • said protrusions are provided adjacent to the keys in a plane between the keys and the base of the container.
  • the contact faces of the container are disposed on a portion of the container with the form of a truncated cone having the larger basis towards the base of the container, and advantageously the enclosure of the container is also deformable.
  • the present invention provides a cap for locking engagement with a container, comprising a skirt, where the cap comprises a locking arrangement according to any of the claims 1 to 9, and a container for locking engagement with a cap, comprising an enclosure opening into an opening, where the container comprises a locking arrangement according to any of the claims 1 to 9.
  • the cap When the cap is moulded, it can be stripped of the core forming the inner surfaces of the cap and the diameter of the skirt will temporary increase or change shape to be ejected. As the surfaces forming the slots for the keys are very robust compared to a key protruding from a surface, they will not be destroyed during ejection, and the use of collapsing or flexible cores are not necessary.
  • the cap according to the present invention can be made of plastic, for example High Density Polyethylene (HDPE), or any other suitable material.
  • HDPE High Density Polyethylene
  • the cap can also be moulded from two different materials, but moulded in one piece, by way of two-component injection moulding.
  • above-mentioned sealing ring is moulded from a softer material than HDPE, for example thermoplastic elastomer (TPE), whereas the remaining part of the cap is moulded from HDPE.
  • TPE thermoplastic elastomer
  • a sealing ring made from TPE further improves the sealing effect between the cap and the opening of the container, and as a sealing ring made from TPE has a resilient character, it also provides a certain biasing force away from the container.
  • the container according to the present invention can be made of plastic, for example High Density Polyethylene (HDPE), or any other suitable material.
  • HDPE High Density Polyethylene
  • Figs. 1 to 3 show a first embodiment of the locking arrangement, the container 1 and the detachable cap 2, respectively, according to the present invention.
  • both parts are made of plastic, but they can be made of any other suitable material.
  • the container 1 and the cap 2 have a circular cross section defining a central axis.
  • the container 1 has a base 3 and an enclosure 4 with an opening 5.
  • the cap 2 has a base 6 and a skirt 7 with a free edge 8.
  • a tamper evidence ring 23 is provided along the free edge 8 of the skirt, to indicate if the container 1 previously has been opened.
  • each slot 9 has an inlet 20 at the free edge 8 of the skirt 7 for receiving a key 18 provided on the outside of said enclosure 4.
  • a locking section 10 is formed having a receiving notch 11 near the free edge 8 of the skirt 7 and an opening 12 facing in opposite direction.
  • the inlet 20 can be rounded but can also have a more rectangular configuration.
  • the inlet 20 is angled in relation to the free edge 8 of the skirt 7, forming an angle less than about 60° to said free edge 8, or advantageously less than 45°.
  • the locking section 10 further comprises a stop surface 15 positioned towards the inlet 20, for preventing the key 18 from moving laterally towards the inlet 20, when received in the receiving notch 11, and a guiding surface 14 opposing said stop surface 15, for guiding the key 18 into the receiving notch 11.
  • a lower surface 17 of the slot 9 has a lateral edge extending obliquely outwards from the opening 12 of the locking section 10 in direction towards the free edge 8 of the skirt 7. This lateral edge is straight, but it can also be arc-shaped with a tangent forming an increasing angle with the adjacent side of the locking section 10 in the direction from the free edge 8 of the skirt 7 to the opening 12 of the locking section 10.
  • each locking section 10 On the outside of the enclosure 4 of the container 1 four keys 18 are made fitting into each locking section 10.
  • Four protrusions 16 positioned adjacent to the keys 18 towards the base 3 of the container 1 have a contact surface declining in direction towards the opening 5 of the enclosure 4.
  • a sealing ring 19 located on the inside of the base 6 of the cap 2 is extending towards the base 6 of the cap 2 at a distance from its skirt 7.
  • Fig. 2 shows the beginning of the closing operation.
  • the keys 18 are now engaging the part of the straight lateral lower surface 17 nearest the free edge 8 of the skirt 7.
  • Fig. 3 the keys 18 are rotated free of the lower surface 17 with the lateral edge, after which the keys 18 of the container 1 have been guided into each their receiving notch 11 via the opening 12, by the axial force of the contact faces which moves the cap 2 away from the container 1, as indicated by the arrow in Fig. 3.
  • the guiding surface 14 functions as a stop to the keys 18 in this connection and thereby against further rotation of the cap 2.
  • the cooperative contact faces are arranged to form an angle with each other, the contact faces on the inside of the skirt 7 being at a shorter distance from the central axis than the oblique contact surfaces of the protrusions 16 of the container 1. This means that the skirt 7 of the cap 2 and the enclosure 4 of the container 1 necessarily have to be deformed to be able to allow the cap 2 to be fastened on the container 1 as described above.
  • the skirt 7 and enclosure 4 are elastically deformed whereby they are loaded by internal stresses with a component of force which tries to press the cap 2 and the container 1 in opposite directions whereby every key 18 is automatically pushed into a receiving notch 11 in the state shown in fig. 3, when the oblique contact surfaces of the protrusions 16 form a not self-locking angle with the central axis.
  • the stresses are mainly generated by bending of the skirt 7 and enclosure 4 and therefore only reach a value which the plastic can withstand for a very long time without thereby being inflicted with significant permanent deformations.
  • Removal of the cap 2 is achieved by performing the operations performed at fastening the cap 2 in a reverse order.
  • this requires that the cap 2 is first pressed towards the container 1, whereby above mentioned component of force is overcome, and thus the keys are disengaged from their receiving notches 11, and the cap 2 can be rotated anticlockwise. This operation is too difficult to perform for a child.
  • the locking arrangement according to the invention is therefore childproof.
  • Fig. 4 shows a second embodiment of a locking arrangement according to the present invention.
  • This embodiment corresponds to the embodiment described above with reference to figs. 1 to 3.
  • the same reference numerals are therefore used for like parts.
  • the keys 18 are cooperating with a conical skirt 21 on the cap 22 and located at a greater distance from the central axis than said free end of said keys.
  • this second embodiment functions in the same way as the first embodiment and the same advantages are also obtained, and this second embodiment will therefore not be described in detail.
  • the cap 22 is fastened and removed in the opposite directions of the first embodiment.
  • the conical shape is considered to be advantageous in the moulding as it can be even easier to strip of the core.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP06120450A 2006-09-11 2006-09-11 Dispositif de verrouillage pour fermer un conténeur avec un couvercle Withdrawn EP1897816A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06120450A EP1897816A1 (fr) 2006-09-11 2006-09-11 Dispositif de verrouillage pour fermer un conténeur avec un couvercle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06120450A EP1897816A1 (fr) 2006-09-11 2006-09-11 Dispositif de verrouillage pour fermer un conténeur avec un couvercle

Publications (1)

Publication Number Publication Date
EP1897816A1 true EP1897816A1 (fr) 2008-03-12

Family

ID=37719374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06120450A Withdrawn EP1897816A1 (fr) 2006-09-11 2006-09-11 Dispositif de verrouillage pour fermer un conténeur avec un couvercle

Country Status (1)

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EP (1) EP1897816A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739933A (en) * 1971-03-22 1973-06-19 B Degaetano Liquid-proof safety closure
GB2155985A (en) * 1984-02-16 1985-10-02 Malcolm Gordon Victory Bayonet fastening
WO2004065243A1 (fr) * 2003-01-22 2004-08-05 MØLLER, Claus, Schmidt Systeme de verrouillage pour un recipient muni d'un capuchon

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739933A (en) * 1971-03-22 1973-06-19 B Degaetano Liquid-proof safety closure
GB2155985A (en) * 1984-02-16 1985-10-02 Malcolm Gordon Victory Bayonet fastening
WO2004065243A1 (fr) * 2003-01-22 2004-08-05 MØLLER, Claus, Schmidt Systeme de verrouillage pour un recipient muni d'un capuchon

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