EP0052260B1 - Bouchon de sécurité - Google Patents

Bouchon de sécurité Download PDF

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Publication number
EP0052260B1
EP0052260B1 EP19810108868 EP81108868A EP0052260B1 EP 0052260 B1 EP0052260 B1 EP 0052260B1 EP 19810108868 EP19810108868 EP 19810108868 EP 81108868 A EP81108868 A EP 81108868A EP 0052260 B1 EP0052260 B1 EP 0052260B1
Authority
EP
European Patent Office
Prior art keywords
inner cap
container
ring
locking teeth
lock
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.)
Expired
Application number
EP19810108868
Other languages
German (de)
English (en)
Other versions
EP0052260A1 (fr
Inventor
Werner Emich
Hans Zeig
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.)
Friedrich Sanner & Co KG Spritzgusswerk GmbH
Original Assignee
Friedrich Sanner & Co KG Spritzgusswerk GmbH
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 Friedrich Sanner & Co KG Spritzgusswerk GmbH filed Critical Friedrich Sanner & Co KG Spritzgusswerk GmbH
Publication of EP0052260A1 publication Critical patent/EP0052260A1/fr
Application granted granted Critical
Publication of EP0052260B1 publication Critical patent/EP0052260B1/fr
Expired 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
    • 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
    • B65D50/041—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 the closure comprising nested inner and outer caps or an inner cap and an outer coaxial annular member, which can be brought into engagement to enable removal by rotation

Definitions

  • the invention relates to a child-resistant closure for containers, in particular pharmaceutical and / or chemical bottles, with an inner cap which can be fastened on the mouth of the container by turning and can be released by turning in the opposite direction and has a substantially cylindrical peripheral surface on which it overlaps relative to it rotatable and axially displaceable axially displaceable outer closure member is arranged with a substantially complementary cylindrical inner circumferential surface, on the inner cap and the outer closure member complementary engaging coupling projections are provided, which by axial displacement of the outer closure member on the inner cap in the direction of the inside of the container in coupling engagement with one another, by means of opposite axial displacement, on the other hand, can be disengaged, the outer closure part being a substantially cylindrical ring wall surrounding the peripheral surface of the inner cap and at its end facing away from the container has an elastically deformable annular flange directed obliquely backwards to the container, the free inner boundary edge of which is supported on a radial surface of the inner cap.
  • a closure of this type is known (DE-AS 2 303 020), in which the outer closure part consists of an outer cap which completely overlaps the inner cap and is formed by an annular wall which is closed by an end wall, the outer surface being essentially flat and having the inside cap Free edges of the elastic ring flange, which are divided into three mutually resilient tongues by incisions, are supported, which are integrally molded on the inner end face of the outer cap.
  • the tongues hold the caps axially apart by the predetermined amount and thereby ensure that engagement of the coupling projections when the closure is opened is only possible by exerting an additional axial pressure which compresses the tongues while turning.
  • the invention is based on the object to provide a child-resistant closure, the production of plastic in the injection molding process is possible in a material-saving manner and without complicated tools with sliders, which are otherwise required for the demolding of closure parts with molded resilient tongues.
  • this object is achieved according to the invention in that the elastically deformable ring flange is applied radially inward, directly to the upper edge of the cylindrical ring wall facing away from the container, and revolves continuously that the inner cap is connected to its upper end remote from the container Circumferential surface has a radially inwardly directed annular end surface, the inner diameter of which is dimensioned slightly smaller than the diameter of the free boundary edge of the resilient ring flange of the outer ring wall, and that the free passage of the elastic ring flange from an adjoining the annular end face of the inner cap with a cylindrical outer peripheral surface and closed front wall is penetrated.
  • the closure according to the invention thus only has an annular wall encompassing the inner cap, while the end wall is omitted or is formed into a thin elastic annular flange, which takes over the function of the resilient tongues of the known closures, but without requiring complicated injection tools if the ring wall is molded in one piece with the elastic ring flange made of plastic.
  • the omission of the end wall also saves plastic material.
  • the height of the cylindrical peripheral surface of the extension of the inner cap is preferably dimensioned such that the outer end face of its essentially flat end wall is aligned approximately flush with the upper boundary edge of the ring wall when the ring flange is not deformed.
  • the cylindrical extension does not protrude above the upper boundary edge of the ring wall and therefore cannot be grasped by a child to bypass the safety function of the ring wall.
  • the end face should not be lower than the upper boundary edge of the ring wall either, in order to avoid pre-deformation of the elastic ring flange, for example in stacked packs.
  • the fit between the inner cap and the mouth of the associated container is preferably dimensioned tighter than the fit of the ring edge on the inner cap. This ensures that the securing function is retained even when the inner cap has already been rotated slightly on the container mouth in the opening direction, that is to say the axial pressing in of the ring wall for unscrewing the container closure is applied not only during the breakaway of the firmly tightened closure, but throughout Unscrewing must be kept up.
  • Ge Compared to closures, in which the axial force is only required during the breakaway, the security against unintentional opening by children is increased, since the securing function is provided even if the closure has not been closed with great force.
  • the coupling projections can on the one hand and in the radially outer region of the annular end face of the inner cap between locking recesses formed at regular intervals provided on the one hand and on the end remote from the container of the inner peripheral surface of the ring wall on the other hand arranged locking teeth, each with an essentially axial direction and a ramp-like oblique be inclined to the axial direction engaging surface, the arrangement being made such that the axially extending engaging surfaces of the locking teeth of the inner cap and the ring wall in the direction of closure-twist and the inclined engaging surfaces in the direction of closure-unscrewing which are exerted on the closure for closure or opening Torque transmitted.
  • Low projections can then be provided on the upper side of the area of the inner cap end face located radially within the locking teeth, which cooperate with at least one knob projection on the underside of the elastically deformable ring flange and when the ring wall rotates relative to the inner cap, i. H. if the ring wall is out of clutch engagement with the inner cap, make a ratchet sound and so acoustically draw attention to the fact that it is a safety lock that requires special manipulation to open.
  • the coupling projections are in the radially inner region of the annular end face of the inner cap between latching teeth formed at regular intervals and latching teeth arranged on the underside of the elastically deformable ring flange facing the inner cap, each with one approximately in the axial direction and one ramp-like, obliquely inclined to the axial direction of the engaging surface, the arrangement is again made such that the approximately axially extending engaging surfaces of the locking teeth of the inner cap and on the ring flange in the closure-twisting direction and the ramp-like inclined engagement surfaces in the closure-unscrewing direction for closing or opening transferred from the container to the closure applied torque.
  • the mutually facing front ends of the locking teeth of the inner cap and on the ring flange can be formed and arranged so that they already overlap somewhat in the undeformed starting position of the ring flange in the axial direction.
  • the ring wall takes the inner cap with it in any case without exerting any axial pressure, while when rotating in the direction of rotation the ramp-like oblique engagement surfaces slide onto one another and the locking teeth jump over if no axial pressure is exerted. This also creates the desired ratchet sound.
  • Separate projections on the inner cap and knob projections on the ring element are therefore not necessary in this embodiment.
  • the engagement surfaces of the locking teeth of the inner cap and on the ring flange, which interact in the direction of rotation, are expediently arranged slightly inclined in the same direction as the engagement surfaces assigned to the opening direction in this case, so as to produce a force component holding the engagement surface in clutch engagement when the engagement is closed.
  • the inner cap and the ring wall are preferably injection-molded in one piece with their locking teeth made of plastic, and the ring wall has at its mouth, which is open on the container side, a radially inwardly projecting molded-on ring projection which engages under the container-side end edge of the peripheral wall of the inner cap.
  • a circumferential or interrupted projection could also be provided on the circumferential surface of the inner cap, which engages in an assigned annular groove in the inner surface of the ring wall.
  • FIGS. 1 to 6 The first exemplary embodiment, designated in its entirety by 10, shown in FIGS. 1 to 6, of a child-resistant closure designed in the manner according to the invention is shown in FIGS. 1 and 4, screwed onto the neck 14 of a medication bottle 16 provided with a screw thread 12.
  • the closure 10 is thus a screw closure, but this is not essential to the invention, since it could also be designed as a bayonet closure or the like. It is only essential that it is a fastener which can be fastened to the container by turning and can be removed and removed again by turning in opposite directions.
  • the closure 10 consists of two parts, namely an inner cap 18 which can be screwed onto the screw thread 12 and has a cylindrical outer circumferential surface 20 and an essentially likewise cylindrical outer closure part which surrounds the circumferential surface 20 of the inner cap 18 in the form of an essentially cylindrical ring wall 22 which is used for Increasing the grip on its outer cylindrical peripheral surface is provided in the usual way with longitudinally extending low ribs 24.
  • the inner cap 18 has at its upper end in connection with the peripheral surface 20 a radially inwardly directed annular end face 26, in the outer area directly adjoining the peripheral surface 20, at regular intervals, locking recesses 28 are provided, the locking teeth in the material remaining between them 30 form.
  • the ring wall 22 has, at its end facing away from the medication bottle 16, an elastically deformable ring flange 32, which is attached in one piece and directed radially inwards and obliquely backwards to the bottle, the free inner boundary edge of which is supported radially within the locking teeth 30 on the annular end face 26.
  • the free passage of the annular wall 22 formed within the annular flange 32 is penetrated by a cylindrical extension 34 adjoining the annular end surface 26 of the inner cap 18 with a substantially flat closed end wall 36, the extension 34 having such a height that the outer surface of its end wall 36 is aligned approximately flush with the upper boundary edge of the ring wall 22.
  • the locking teeth 30 and 38 each have a substantially axially extending and a ramp-like obliquely inclined to the axial engagement surface, the arrangement being such that the axially extending engagement surfaces of the locking teeth of the inner cap of the ring wall in the closure-twist direction and the inclined Engaging surfaces in the direction of screw-open transfer the torque exerted on the seal to close or open the container.
  • the relatively small axial force required to deform the ring flange 32 is sufficient to couple and hold the axially extending engagement surfaces.
  • the inclined engagement surfaces of the locking teeth 30, 38 interact.
  • the fit between the inner cap and the neck 14 of the medication vial 16 is chosen to be sufficiently tight, the desired securing function is achieved not only at the moment the closure is released, but during the entire unscrewing process.
  • low projections 40 are additionally provided, which cooperate with knob projections 42 on the underside of the elastically deformable ring flange 32 and, when the ring wall rotates relative to the inner cap, also produce a ratchet noise when no axial pressure is exerted on the ring wall.
  • FIGS. 1 and 2 the inner cap and in FIGS. 9 and 10 the ring wall of a modified embodiment of a child-resistant closure according to the invention is shown, which corresponds to the previously described closure 10 in its assembled state, so that FIGS. 1 and 2 can be used simultaneously to illustrate this second embodiment.
  • the structure of the second exemplary embodiment partially corresponds to the child-resistant closure 10 already described, only the differences in design and function of the second exemplary embodiment are shown below in order to avoid unnecessary repetitions, while reference can be made to the preceding description with regard to the corresponding features.
  • the same or functionally corresponding parts of the second exemplary embodiment are numbered with the same reference numbers as in the exemplary embodiment according to FIGS. 1 to 6, but with the prefix 1.
  • the locking teeth 130 of the inner cap 118 in the annular end face 126 are arranged offset radially inward, specifically in the area in which the elastically deformable ring flange 132 is supported on the end face 126.
  • the locking teeth 138 assigned to the ring wall 122 are accordingly provided on the underside of the ring flange 132 and project in the axial direction so far from its lower boundary edge that the mutually facing front ends of the locking teeth 130, 138 already overlap somewhat in the undeformed normal position of the ring flange 122.
  • the locking teeth 130, 132 have mutually associated engagement surfaces, of which the engagement surfaces which come into contact with one another when the ring wall is rotated in the direction of rotation run inclined in a ramp-like manner.
  • these engagement surfaces slide onto one another and, because the ring flange 132 allows axial displacement due to its elasticity, pass over one another, the desired ratchet noise also being generated at the same time, and without additional projections and knob projections as in the case of previously described embodiment.
  • the engagement surfaces of the locking teeth 130, 138 can in turn be inclined in the axial direction or also slightly in the same sense as the engagement surfaces assigned to the opening direction, in order to ensure that these engagement surfaces when the ring wall 122 is rotated in the direction of rotation even without additional application of axial pressure are kept in engagement with each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (9)

1. Fermeture de sécurité envers les enfants (10) pour des récipients (16), en particulier des flacons de médicament et/ou de produits chimiques, comprenant un capuchon interne (18; 118) qui peut être fixé par rotation sur l'embouchure du récipient et détaché par rotation dans le sens opposé et présente une surface périphérique sensiblement cylindrique et sur lequel est agencée une pièce de fermenture externe (22) qui le recouvre, est capable de pivoter par rapport à lui, peut être déplacée axialement par rapport à lui d'une mesure prédéterminée et présente une surface périphérique interne cylindrique sensiblement complémentaire, des saillies d'accouplement (30; 38; 130; 138), capables d'entrer en prise de manière complémentaire, étant prévues sur le capuchon interne (18; 118) et la pièce de fermeture externe et pouvant être amenées mutuellement en prise par un déplacement axial de la pièce de fermeture externe sur le capuchon de fermeture (18; 118) dans le sens de l'intérieur du récipient et par contre hors de prise par un déplacement axial opposé, la pièce de fermeture externe présentant une paroi annulaire (22; 122) sensiblement cylindrique qui entoure la surface périphérique du capuchon interne, et, à son extrémité opposée au récipient, une bride annulaire (32; 132) élastiquement déformable qui est dirigée de manière inclinée vers l'arrière en direction du récipient, l'arête limite interne libre de cette bride annulaire étant en appui sur une surface radiale (26; 126) du capuchon interne (18; 118), caractérisée en ce que la bride annulaire élastiquement déformable (32; 132) est montée, en étant dirigée radialement vers l'intérieur, directement sur le bord supérieur opposé au récipient de la paroi annulaire cylindrique (22; 122) et effectue un tour ininterrompu, en ce que le capuchon interne (18; 118) présente, à son extrémité surpérieure opposée au récipient, raccordée à sa surface périphérique (20; 120), une surface frontale annulaire (26; 126) qui est dirigée radialement vers l'intérieur et dont le diamètre interne est mesuré à une valeur faiblement plus petite que le diamètre de l'arête limite libre de la bride annulaire élastique (32; 132) de la paroi annulaire externe (22; 122), et en ce que le passage libre de la bride annulaire élastique (32; 132) est traversé par un appendice (34; 134) qui est raccordé à la surface frontale annulaire du capuchon interne (18; 118) et qui présente une surface périphérique externe cylindrique et une paroi frontale fermée (36; 136).
2. Fermeture de récipient suivant la revendication 1, caractérisée en ce que la hauteur de la surface périphérique cylindrique de l'appendice (34; 134) est mesurée de façon que la surface frontale externe de sa paroi frontale (36; 136) réalisée sous une forme sensiblement plane soit alignée environ à fleur de l'arête limite supérieure de la paroi annulaire (22; 122) lorsque la bride annulaire (32; 132) n'est pas déformée.
3. Fermeture de récipient suivant l'une ou l'autre des revendications 1 et 2, caractérisée en ce que l'ajustement entre le capuchon interne (18; 118) et l'embouchure du récipient respectif (16) est plus tenace que l'ajustement de la paroi annulaire (22; 122) sur le capuchon interne (18; 118).
4. Fermeture de récipient suivant l'une des revendications 1 à 3, caractérisé en ce que les saillies d'accouplement sont, d'une part, des dents (30) formées dans la zone externe radiale de la surface frontale annulaire (26) du capuchon interne (18) entre des évidements (28) prévus à distances uniformes et, d'autre part, des dents (38) agencées sur l'extrémité opposée au récipient de la surface périphérique interne de la paroi annulaire (22), ces dents présentant chacune une surface de prise disposée sensiblement en direction axiale et une surface de prise disposée de manière inclinée par rapport à la direction axiale à la manière d'une rampe, l'agencement étant conçu de façon que les surfaces de prise disposées axialement des dents (30, 38) du capuchon interne (18) et de la paroi annulaire (22) transmettent la force de rotation exercée sur la fermeture (10) pour la fermeture et respectivement l'ouverture du récipient (12), dans le sens de fermeture de la fermeture, et les surfaces de prise disposées de manière inclinée le font dans le sens d'ouverture de la fermeture.
5. Fermeture de récipient suivant la revendication 4, caractérisée en ce que, du côté supérieure de la zone de la surface frontale du capuchon interne (26), qui est située radialement à l'intérieur des dents (30), sont prévues des saillies basses (40) qui coopèrent avec au moins une saillie en forme de bouton (42) sur la face inférieure de la bride annulaire élastiquement déformable (32) et engendrent un bruit de grincement lors de la rotation de la paroi annulaire (22) par rapport au capuchon interne (18).
6. Fermeture de récipient suivant l'une des revendications 1 à 3, caractérisée en ce que les saillies d'accouplement sont des dents (130) formées dans la zone située radialement à l'intérieur de la surface frontale annulaire (126) du capuchon interne (118) entre des évidements (128) prévus à distances uniformes et des dents (138) agencées sur la face inférieure, adjacente au capuchon interne, de la bride annulaire élastiquement déformable (132), ces dents présentant chacune une surface de prise disposée approximativement dans le sens axial et une surface de prise disposée de manière inclinée par rapport à la direction axiale à la manière d'une rampe, l'agencement étant conçu de façon que les surfaces de prise disposée environ axialement des dents (130; 138) du capuchon interne (118) et de la bride annulaire (132) transmettent la force de rotation exercée sur la fermeture pour la fermeture ou respectivement l'ouverture du récipient, dans le sens de fermeture de la fermeture, et les surfaces de prise disposées de manière inclinée à la manière de rampes transmettent cette force dans le sens d'ouverture de la fermeture.
7. Fermeture de récipient suivant la revendication 6, caractérisée en ce que les extrémités avant mutuellement adjacentes des dents (130; 138) du capuchon interne (118) et de la bride annulaire (132) se recouvrent déjà presque en sens axial dans la position de départ non déformée de la bride annulaire (132).
8. Fermeture de récipient suivant la revendication 7, caractérisée en ce que les surfaces de prise, coopérant dans le sens de fermeture, des dents (130; 138) du capuchon interne (118) et de la bride annulaire (132) sont, par rapport à la direction axiale exacte, réalisées de manière faiblement inclinée dans le même sens que les surfaces de prise adjointes au sens d'ouverture.
9. Fermeture de récipient suivant l'une des revendications 1 à 8, caractérisée en ce que le capuchon interne (18; 118) et la paroi annulaire (22; 122) sont moulées chacune par injection d'une pièce avec leurs dents (30; 38; 130; 138) à partir d'une substance synthétique et en ce que la paroi annulaire (22, 122) présente sur son embouchure ouverture du côté du récipient une saillie annulaire moulée par injection, qui fait saillie radialement vers l'intérieur et qui prend par-dessous l'arête frontale du côté récipient de la paroi périphérique du capuchon interne (18; 118).
EP19810108868 1980-11-14 1981-10-24 Bouchon de sécurité Expired EP0052260B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803042954 DE3042954C2 (de) 1980-11-14 1980-11-14 Kindersicherer Behälter-Verschluß
DE3042954 1980-11-14

Publications (2)

Publication Number Publication Date
EP0052260A1 EP0052260A1 (fr) 1982-05-26
EP0052260B1 true EP0052260B1 (fr) 1985-01-23

Family

ID=6116759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810108868 Expired EP0052260B1 (fr) 1980-11-14 1981-10-24 Bouchon de sécurité

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EP (1) EP0052260B1 (fr)
DE (1) DE3042954C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331485C2 (de) * 1983-09-01 1986-08-14 Owens-Illinois, Inc., Toledo, Ohio Kindersicherer Verschluß
DK156691A (da) * 1991-09-06 1993-03-07 Lundbeck & Co As H Beholderskruelukke med boernesikring
DE9304975U1 (de) * 1993-04-01 1993-06-09 Globol GmbH, 8858 Neuburg Verschluß für eine Verdunstungsvorrichtung
US8157115B2 (en) * 2005-03-15 2012-04-17 Hee Kwon Rho Child-resistant cap having inner and outer caps and a seal removing unit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27156A (en) * 1860-02-14 Island
US3260393A (en) * 1965-05-10 1966-07-12 Roberts Simon Safety cap for containers
US3394829A (en) * 1967-04-10 1968-07-30 Harris M. Peterson Safety cap
CH519423A (de) * 1970-02-13 1972-02-29 Ciba Geigy Ag Behälterverschluss
DE2115741B1 (de) * 1971-03-31 1972-06-29 Grau, Hermann, 7071 Lindach Sicherheitsverschluß
US3782604A (en) * 1972-01-20 1974-01-01 M Kessler Screw cap with safety cover
GB1402006A (en) * 1972-10-04 1975-08-06 Metal Box Co Ltd Closures for bottles and like containers
US3853236A (en) * 1973-12-06 1974-12-10 Federal Tool & Plastics Safety closure unit
DE2927339A1 (de) * 1979-07-06 1981-01-29 Sanner Kg Friedr Kindersicherer behaelter-verschluss

Also Published As

Publication number Publication date
DE3042954A1 (de) 1982-07-22
EP0052260A1 (fr) 1982-05-26
DE3042954C2 (de) 1986-09-04

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