DK148506B

DK148506B - CLOSE TO CONTAINERS

Info

Publication number: DK148506B
Application number: DK022878AA
Authority: DK
Inventors: Alrik Civer Lindstroem
Original assignee: Alrik Civer Lindstroem
Priority date: 1977-01-18
Filing date: 1978-01-17
Publication date: 1985-07-22
Also published as: NO146158C; DK22878A; FR2377334B3; JPS53108591A; IT7819308A0; SE409684B; GB1588794A; AU3247878A; DK148506C; IT1092272B; DE2801277A1; FR2377334A1; SE7700467L; NO146158B; CA1103211A; NO780167L; CH624073A5; DE2801277C2

Description

i 148506in 148506

Opfindelsen angår et lukke til beholdere, såsom flasker og dåser med en indvendigt,praktisk taget cylindrisk munding, hvilket lukke omfatter to separate, aksialt efter hinanden liggende hoveddele af elastisk eftergivende plast, hvoraf den 5 ene hoveddel udgøres af en som lukkedel tjenende overdel med en prop, og den anden hoveddel udgør en underdel, som ved sin nederste ende er indrettet til at fastgøres tæt sluttende på en beholders mundingskant, og som har en centralt beliggende, aksialt forløbende rørformet tætningsdel, med hvilken over-10 delen er indrettet til at danne et tætsluttende lukke ved hjælp af en læbetætning.BACKGROUND OF THE INVENTION The invention relates to a container closure, such as bottles and cans, with an internally practically cylindrical mouth, comprising two separate, axially consecutive elastic resilient body parts, one of the main body of which is a closure upper serving member with a plug, and the second body portion constitutes a bottom portion which is arranged at its lower end to be secured tightly to the mouth edge of a container, and which has a centrally located, axially extending tubular sealing portion with which the top portion is adapted to form a tight-fitting closure using a lip seal.

Hvad angår den kendte teknik skal der henvises til DE offentliggørelsesskrift nr.2330100,hvorfra der kendes en beholder,som ved sin nederste kant har en læbetætning bestående af to læber, 15 der i tværsnit forløber V-formet opefter og bort fra beholde ren, og som er beregnet til at indgribe i et rundgående spor i et låg. Ved lågets påsætning udvides den inderste læbe elastisk, og den yderste læbe trykkes elastisk indefter.As far as the prior art is concerned, reference is made to DE Publication No. 2330100, from which is known a container having at its lower edge a lip seal consisting of two lips, 15 extending in cross section V-shaped upwards and away from the container, and which is intended to engage a circular groove in a lid. When the lid is applied, the inner lip is elastically expanded and the outer lip is elastically pressed inwards.

Yderligere skal der henvises til DE offentliggørelsesskrift 20 nr.2340647,hvorfra der kendes et skruelukke, hvor skruelukket ind vendigt har en konus med en tilspidsende kant,der ved lukkets påsætning på den pågældende beholder enten foldes tilbage eller trykkes sammen.In addition, reference is made to DE publication specification 20 no. 2340647, from which a screw closure is known, the screw cap being internally having a cone with a tapered edge which, either when folded on the container, is folded back or compressed.

Der skal yderligere henvises til fransk patentskrift nr. 1486721, der viser et lukke med en tætningslæbe i form af en 25 konus på undersiden af et låg. Tætningen opnås ved dobbeltfold ning af læben.Reference is further made to French Patent Specification No. 1486721, showing a closure with a sealing lip in the form of a 25 cone on the underside of a lid. The seal is obtained by double folding of the lip.

Der skal yderligere henvises til US. patentskrift nr.3632005,der viser et lukke med en tætningslæbe, som klemmes fast mellem lukket og kanten af den flaske, hvorpå lukket anbringes.Reference should also be made to the US. Patent No. 3632005, showing a closure with a sealing lip which is clamped between the closure and the edge of the bottle on which the closure is placed.

30 Lukket ifølge den foreliggende opfindelse er ejendommeligt ved, at den rørformede tætningsdel indvendigt er udformet med en ringformet, som læbetætning tjenende kraveflange, som er rettet skråt ned i den rørformede tætningsdel og i tværsnit har en i retning mod sin frie kant aftagende tykkelse til dannelse 35 af et ringformet kantparti, som er radialt og elastisk udspile- ligt, og at overdelen er udformet med en centralt beliggende, aksialt rettet og udvendigt cylindrisk og glat tætningsprop, som er nedført på en sådan måde i den rørformede tætningsdel, at kraveflangen med sin frie kant er elastisk eftergiveligt ud- 2 148506 udspændt af proppen og ligger tætnende an omkring denne, og at den rørformede tætningsdel indvendigt er udformet med yderligere §n kraveflange i aksial afstand fra den første kraveflange på en sådan måde, at de to kraveflanger tætner mod 5 proppen og holder denne i en koaksial stilling i underdelens rørformede tætningsdel.The closure of the present invention is characterized in that the tubular sealing member is formed internally with an annular collar-flanged lip seal, which is inclined downwardly into the tubular sealing member and has a thickness which decreases in its direction towards its free edge. 35 of an annular edge portion which is radially and elastically playable, and that the upper part is formed with a centrally located, axially directed and externally cylindrical and smooth sealing plug which is inserted in such a manner in the tubular sealing member that the collar flange with its the free edge is resiliently resiliently tensioned by the plug and sealingly surrounding it, and that the tubular sealing member is formed internally with a further axial flange at axial distance from the first collar flange in such a way that the two collar flanges seal against 5, holding the plug in a coaxial position in the tubular sealing member of the base.

I kraft af denne udformning af lukket opnås der i modsætning til, hvad der opnås ved hjælp af de kendte lukker, en meget effektiv' tætning, samtidigt med at den til indsætning, henholdsvis 10 aftagning af proppen nødvendige kraft bliver meget lille, således at lukket uden vanskelighed kan håndteres af syge og svage personer, samt at proppen styres på sikker måde. Denne virkning opnås i kraft af den radialt elastiske udspiling af den som læbetætning tjenende kraveflange kombineret med dennes aftagende 15 tykkelse, hvorfor der til denne udspiling kun kræves små kræfter, og alligevel vil der opnås en effektiv tæthed takket være krave-flangens skråtrettede stilling og aftagende tykkelse, hvortil kommer,at den yderligere kraveflange sikrer styringen af proppen. Lukket ifølge opfindelsen vil i det følgende blive nærmere 20 forklaret i forbindelse med en udførelsesform og under henvis ning til tegningen, hvor fig. 1 viser et aksialt snit gennem lukket ifølge opfindelsen monteret på mundingen af en flaske og med en overdel trukket op til en mellemstilling i forhold 25 til en på flasken fastklemt underdel, fig. 2 et tværsnit langs 2-2 i fig. 1, fig. 3 en detalje i større målestok af det i fig. 1 viste lukke set fra siden, og forsynet med en forsegling, fig. 4 et snit langs 4-4 i fig. 3 gennem forseglingen, 30 fig. 5 en detalje af underdelens inderside forsynet med et antal rundtgående låsebjælker, der indgår i en bajonetlås til låsning af lukket, fig. 6 et snit langs 6-6 i fig. 5, fig. 7 et snit langs 7-7 i fig. 3, og hvor en af bajonet-35 låsens radialt forløbende tænder ses, og fig. 8 et udsnit af det i fig. 1 viste med den forskel, at overdelen er trykket ned til sin bundstilling på underdelen, hvor forseglingen ses i ubrudt tilstand.By virtue of this design of the closure, contrary to what is obtained by means of the known closures, a very effective seal is obtained, at the same time that the force required for inserting or removing the plug, respectively, becomes very small, so that the closure can easily be handled by sick and weak persons, and the plug can be safely controlled. This effect is achieved by the radially elastic flushing of the collar flange serving as a lip seal combined with its decreasing thickness, which is why only small forces are required for this flushing, and yet an effective density is obtained thanks to the inclined and decreasing position of the collar flange. thickness, in addition to the additional collar flange ensures control of the plug. The closure according to the invention will be explained in more detail below in connection with an embodiment and with reference to the drawing, in which fig. 1 shows an axial section through the closure according to the invention mounted on the mouth of a bottle and with an upper part drawn up to an intermediate position in relation to a lower part clamped to the bottle; FIG. 2 is a sectional view taken along 2-2 of FIG. 1, FIG. 3 is an enlarged detail of the embodiment of FIG. 1 is a side view, and provided with a seal; FIG. 4 is a sectional view taken along 4-4 of FIG. 3 through the seal, FIG. 5 shows a detail of the inside of the lower part provided with a number of circumferential locking beams which are included in a bayonet lock for locking the closure; FIG. 6 is a section along 6-6 of FIG. 5, FIG. 7 is a section along 7-7 of FIG. 3, and showing one of the radially extending teeth of the bayonet-35 lock, and FIG. 8 is a sectional view of the embodiment of FIG. 1, with the difference that the upper part is pressed down to its bottom position on the lower part, where the seal is seen in unbroken condition.

3 1485063 148506

Lukket består af to, ved sprøjtestøbning præcisionsfremstillede hoveddele af plast, nemlig en som låg tjenende overdel 10 og en underdel 11, som er fastgjort i mundingen af en beholder, der i det viste eksempel er en glasflaske 12 med en vulstformet 5 mundingskant 13, på hvilken underdelen er fastklemt. Overdelen kan bestå af relativt hårdt plast, medens underdelen er af noget blødere og elastisk eftergivende plast.The closure consists of two precision-molded plastic body parts, by injection molding, namely a lid 10 and a bottom 11, which are secured to the mouth of a container, which in the example shown is a glass bottle 12 with a bead-shaped 5 mouth edge 13, which lower part is jammed. The upper part may consist of relatively hard plastic, while the lower part is made of somewhat softer and elastic resilient plastic.

Låget eller overdelen består af en cylindrisk del 14, som ved sin ydre ende er lukket med en plan bund 15. Fra bundens 10 underside udgår en koaksialt anbragt cylindrisk, rørformet prop 16.The lid or top consists of a cylindrical portion 14, which at its outer end is closed with a flat bottom 15. From the bottom of the bottom 10 a coaxially arranged cylindrical tubular plug 16 is provided.

Den cylindriske del 14 har et spor 17 ved sin nedre kant, og på et antal steder i dette spor er overdelen udformet med radialt udskydende låsetænder 18. I det viste eksempel er tændernes 15 undersider 19 og oversider 20 skråt affasede som vist i fig. 7 for at lette montering af overdelen på underdelen.The cylindrical portion 14 has a groove 17 at its lower edge, and in a number of places in this groove, the upper portion is formed with radially extending locking teeth 18. In the example shown, the undersides 19 of the teeth 15 and upper sides 20 are bevelled as shown in FIG. 7 to facilitate mounting of the upper part of the lower part.

På et sted langs den cylindriske del 14's omkreds er der udsparet en aksialt forløbende lomme 21, der har sidevægge 22 og en bundvæg 23, som det fremgår af fig. 3 og 4.At a location along the circumference of the cylindrical portion 14, an axially extending pocket 21 having side walls 22 and a bottom wall 23, as shown in FIG. 3 and 4.

20 Underdelen 11, som er af en elastisk eftergivende plast, be står af en cylindrisk væg 24, som på sin inderside er udformet med en radialt forløbende, ringformet mellemvæg 25, der ved sin indre kant går over i en opadrettet rørformet tætningsdel 26 og en nedadrettet foring 27, som ligger tætsluttende an mod in-25 dersiden af flasken 12's munding. Den cylindriske væg 24 er nedenfor mellemvægen 25 udformet med en indadrettet vulst 28, som griber om flaskens vulstkant 13. Monteringen sker på kendt vis ved, at underdelen trykkes aksialt nedad på flaskens munding, hvorved væggen 24 fjedrer ud over kantvulsten 13, og vulsten 30 28 snapper over kantvulsten 13 til den viste låsestilling.The base 11, which is made of an elastic resilient plastic, consists of a cylindrical wall 24, which is formed on the inside with a radially extending annular intermediate wall 25, which at its inner edge passes into an upwardly tubular sealing member 26 and a downwardly liner 27, which seals closely to the inside of the mouth of the bottle 12. The cylindrical wall 24 is below the intermediate wall 25 formed with an inwardly directed bead 28 which grips the bead edge of the bottle 13. The mounting takes place in a known manner by the lower part being axially pressed downwards on the mouth of the bottle, whereby the wall 24 springs beyond the edge bead 13, and the bead 30 28 snaps over the edge bead 13 to the locking position shown.

På indersiden af den cylindriske rørformede tætningsdel 26 er udformet to i aksialt indbyrdes afstand fra hinanden beliggende kraveflanger 29,30, som er rettet skråt nedad. På tegningen er den cylindriske prop 16 ført ned i underdelen og har spilet 35 de elastisk eftergivende kraveflanger 29,30 en smule udad, så ledes at disse ligger an med et vist tryk mod proppen for derved at opnå en effektiv tætning.On the inside of the cylindrical tubular sealing member 26 are formed two axially spaced collar flanges 29,30 which are inclined downwardly. In the drawing, the cylindrical plug 16 is inserted into the lower part and has played 35 the elastic resilient collar flanges 29,30 slightly outwardly, so that they are pressed against the plug with a certain pressure, thereby obtaining an effective seal.

Ved sin øvre ende er den rørformede tætningsdel 26 udvidet 148506 4 til en tætningsflange 31, som også letter udhældning af væske fra beholderen.At its upper end, the tubular sealing member 26 is extended to a sealing flange 31 which also facilitates pouring of liquid from the container.

Ovenover mellemvæggen danner den cylindriske væg 24 et ringformet kantparti 32. På indersiden af dette er udformet 5 rundtgående låsebjælker 33 med det i fig. 6 viste affasede tvær snit. Bjælkerne ligger i indbyrdes afstand til dannelse af åbninger 35, hvori låsetænderne 18 kan føres henholdsvis ind og ud.Above the intermediate wall, the cylindrical wall 24 forms an annular edge portion 32. On the inside of this, 5 locking beams 33 are formed with the embodiment shown in FIG. 6 shows two cut sections. The beams are spaced apart to form apertures 35, in which the locking teeth 18 can be fed in and out respectively.

Ved den ene ende er hver bjælke forlænget med en skråt nedad-rettet styredel 36, som forløber helt ned til mellemvæggen.At one end, each beam is extended by an obliquely downwardly directed guide portion 36 extending all the way down to the middle wall.

10 Når overdelen monteres på underdelen til en enhed, som senere skal monteres på en beholders mundingskant, sker dette hensigtsmæssigt således, at overdelen anbringes i en forud fastlagt drejningsstilling i forhold til underdelen,hvorefter begge dele trykkes sammen til den i fig. 8 viste stilling. Overdelens låsetæn-15 der 18 bliver derved styret ind i en stilling indenfor låsebjæl kerne 33 under samtidig elastisk udpresning af det ringformede kan'tparti 32, hvorefter låsetænderne til sidst snapper ned i låsestilling indenfor låsebjælkerne, hvor låsetændernes affasede oversider 20 ligger an mod bjælkerne 33's affasede undersider.When the upper part is mounted on the lower part of a unit, which is later to be mounted on the mouth edge of a container, this is conveniently done so that the upper part is placed in a predetermined rotational position relative to the lower part, after which both parts are compressed to the one shown in FIG. 8. The locking teeth 18 of the upper part are thereby guided into a position within the locking beam core 33 during simultaneous elastic pressing of the annular edge portion 32, after which the locking teeth finally snap into locking position within the locking beams 20 where the beveled upper sides 20 of the locking teeth abut against the beams 33. beveled undersides.

20 Affasningen af låsetændernes oversider 20 gør det muligt at åbne låsen ved at trække overdelen 10 af i aksial retning uden først at dreje den til fristillingen, hvor tænderne befinder sig ud for åbningerne 35 mellem bjælkerne. Kraften til denne aftrækning er dog relativt stor, hvorfor denne mulighed kun er beregnet som 25 en reservemulighed, hvis den, der anvender lukket, ikke skulle forstå, at man må dreje overdelen for at frikoble bajonetlåsen.20 The bevel of the top teeth of the lock teeth 20 allows the lock to be opened by pulling the upper part 10 off in the axial direction without first turning it to the release position, where the teeth are located at the openings 35 between the beams. However, the power of this pull is relatively high, which is why this option is calculated as a reserve option only if the person using the closure should not understand that one has to turn the top to disengage the bayonet lock.

Ved drejning af overdelen støder tænderne mod de skråtstillede styredele 36 og rider op på disse og ud gennem åbningerne 35.When turning the top, the teeth abut the inclined guide members 36 and ride up on them and out through the openings 35.

Såfremt der ønskes en overdel med en træg eller vanskeligt 30 åbnelig bajonetlås, kan dette let klares ved, at låsetænderne 18 gøres noget større, således at de f.eks. trykker hårdere mod indersiden af det ringformede parti 32 eller mod undersiden af bjælkerne 33. Bajonetlåsen kan således gøres så træg, at et mindre barn i f.eks. 3-4 årsalderen ikke kan åbne bajonetlåsen, 35 hvilken åbning yderligere kan vanskeliggøres ved at gøre over delens yderside helt glat.If a top with a sluggish or difficult-to-open bayonet lock is desired, this can easily be accomplished by making the locking teeth 18 slightly larger, such that they are e.g. presses harder against the inside of the annular portion 32 or against the underside of the beams 33. The bayonet lock can thus be made so sluggish that a smaller child in e.g. The 3-4 year age cannot open the bayonet lock, which opening can be further made difficult by smoothing over the outside of the part.

Som det fremgår af fig. 3 og 4, er f.eks. tre aksialt . forløbende, forholdsvis smalle tremmer 39 udformet ved kanten af det ringformede parti 32 og bærer en låsetunge 40 med parallelleAs shown in FIG. 3 and 4, e.g. three axially. extending relatively narrow bars 39 formed at the edge of the annular portion 32 and carrying a locking tongue 40 with parallel

Claims

148506 side edges, and as shown in FIG. 4 has a cross section which decreases in thickness towards its upper end. When the top 10 is pressed down from the one shown in FIG. 4 to the position shown in FIG. 8, the locking tongue 40 is inserted into a locked position 5 in the pocket 21. In this position, the locking teeth 18 are located below the beam core 33. The sealing is further arranged so that the locking tongues are fully retracted and thus do not form a protrusion which can constitute a obstruction in handling the closure shown in Fig. 8 in a closure attachment machine.

10 When the closure is to be opened, the upper part is rotated relative to the lower part, the bars 39 being so flimsy that they are easily pushed off. The locking tongue is stuck back in the pocket 21. As shown in FIG. 8, the collar flanges 29,30 seal against the plug 16, so that any internal overpressure in the container 15 presses the collar flanges 29,30 into a stronger abutment against the plug. The sealing flange 31, on the other hand, seals against the underside of the bottom 15 and is directed so that the flange 31, in case of negative pressure in the bottle, is pressed harder against the bottom 15. This can be of importance when the bottle is filled with a hot content, which allowed to cool after the closure has been placed on the container. Claims. Closures for containers, such as bottles and cans, with an inner, substantially cylindrical mouth, which includes two separate, axially adjacent head portions (10, 11) of resilient resilient plastic, one of which comprises a closure serving upper (10) with a plug (16), and the second main portion constituting a lower part (11) which is arranged at its lower end to be secured tightly to the mouth edge (13) of a container and having a central bearing, axially extending tubular sealing member (26), with which the upper part (10) is adapted to form a tightly sealed closure by means of a lip seal, characterized in that the tubular sealing member (26) is formed internally with an annular member which lip seal serving collar flange (29) which is inclined downwardly into the tubular sealing member (26) and in cross-section has a thickness decreasing towards its free edge to form an annular edge portion which is radially and elastically projecting. gt, and that the top (10) is formed with a central