EP0412285B1 - Two part plastic closure for a fluids container - Google Patents

Two part plastic closure for a fluids container Download PDF

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Publication number
EP0412285B1
EP0412285B1 EP90112525A EP90112525A EP0412285B1 EP 0412285 B1 EP0412285 B1 EP 0412285B1 EP 90112525 A EP90112525 A EP 90112525A EP 90112525 A EP90112525 A EP 90112525A EP 0412285 B1 EP0412285 B1 EP 0412285B1
Authority
EP
European Patent Office
Prior art keywords
closure
valve tube
valve pin
valve
disposed
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 - Lifetime
Application number
EP90112525A
Other languages
German (de)
French (fr)
Other versions
EP0412285A1 (en
Inventor
Gerhard Leuenberger
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.)
Kisling AG
Original Assignee
S Kisling and Cie AG
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 S Kisling and Cie AG filed Critical S Kisling and Cie AG
Publication of EP0412285A1 publication Critical patent/EP0412285A1/en
Application granted granted Critical
Publication of EP0412285B1 publication Critical patent/EP0412285B1/en
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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
    • B65D47/241—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element
    • B65D47/242—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element moving helically

Definitions

  • the present invention relates to a two-part closure made of plastic for a container containing a flowable substance, according to the preamble of claim 1.
  • a closure which enables a metered delivery of the liquid content of the container.
  • the disadvantage of this closure is that it has a dead space that is not rinsed by the liquid when it escapes.
  • a generic closure according to US Pat. No. 3,216,630 also has a dead space. Parts of the liquid can remain there for a long time, which is particularly inadmissible for liquids with limited shelf life, for example because of spontaneous hardening or other changes, for example with certain one-component adhesives, fats, foods, etc.
  • a further disadvantage of these closures is that they have a pouring area where a liquid residue remains after the liquid has ended, which is then in longer contact with the outside air. Again, this is inadmissible for liquids that cure or otherwise change in contact with the outside air, for example in the case of one-component adhesives that cure in the air, greases that become rancid, or foods that dry out.
  • EP-A-0296103 From EP-A-0296103 a closure is known which has a stuffing element which, in the closed state of the closure, stuffs the upper opening of the upper part. This is to prevent that there is an area of the closure where a liquid residue remains after the liquid has ended, which is then in longer contact with the outside air.
  • the disadvantage here is that after the liquid has stopped flowing, a drop of liquid still bridges the upper opening of the upper part together with the stuffing element, especially if the liquid is so viscous is that even a large drop cannot be removed by shaking it off.
  • the closure according to EP-A-0296103 is soiled and / or glued by this drop.
  • the closure according to EP-A-0296103 has a dead space which is not rinsed by the liquid when it escapes. Otherwise, the closure according to EP-A-0296103 is provided with predetermined breaking points or flexible parts and is therefore correspondingly expensive to manufacture.
  • the object of the present invention is to provide a closure of the type mentioned at the outset, which has no dead space not rinsed when the liquid emerges from it and no pouring area which, after the liquid exit has ended, makes it possible for a liquid residue to remain in contact with the outside air, furthermore none appreciable formation of a drop bridging the upper opening of the upper part, and is also inexpensive to produce.
  • the closure according to the invention is constructed in two parts and is essentially rotationally symmetrical, so that it can be produced inexpensively.
  • valve pin and the valve tube are both frustoconical in shape with different cone angles and are spaced apart from one another, compared to known closures the ability of the closure to meter the liquid by twisting, in particular the setting of the metering takes place more progressively .
  • the two cylinder sections ensure the sealing of the upper part against the lower part with the help of the seal curvature.
  • the liquid flows past the connecting webs within the conical intermediate part.
  • the cylinder sections are in the middle area of the lock between the thread and the valve, and the upper ends of the cylinder sections are approximately opposite each other in the vicinity of the lower end of the conical intermediate part.
  • the preferred embodiment of the sealing curvature as a bead stiffens it very much, which further improves the sealing.
  • the upper opening of the upper part is plugged through the sealing part. If the sealing part is dimensioned such that its upper end is approximately flush with the upper opening of the upper part, then the substance that was expelled from the upper part when the closure was screwed on forms a residue in the form of a bead, the, too if it hardens, the operator can easily remove it with the fingertip or with the nail.
  • the sealing part is not only inserted into the upper opening of the upper part when the closure is screwed on, but is further pushed forward through the upper part so that its upper end projects beyond the upper part when the closure is fully screwed down, then the Any liquid remaining in the area of the upper opening is pushed away and only a little residue can remain and harden there. In any case, no hardening plug can form.
  • the sealing part expands the upper opening of the upper part against the elasticity of the plastic when it is inserted into the upper opening of the upper part, since its diameter is larger than that of the opening when the closure is screwed on. This results in self-cleaning of the upper opening and an improvement in the seal.
  • the rotation of the closure is allowed limited.
  • the closure cannot open, so that no uncontrolled dispensing of liquid can take place, which would be very dangerous for the people around, in particular with cyanoacrylate adhesives.
  • the determination of the angle of rotation and the two end positions of the closure enables the various parts of the closure to be dimensioned exactly in such a way that the sealing part continuously releases the opening of the closure and the valve tube more and more when screwing on, which achieves optimal metering sensitivity, and in the screwed end position precisely compared to the upper part with the advantages that were explained in the previous.
  • the interaction of the baffle and the rib also allows markings to be made on both parts of the closure, the interaction of which allows an operator to adjust the dosage accurately and repeatably.
  • this measure has the advantage that an undesired spontaneous or accidental screwing is prevented.
  • this measure has the advantage that the initial unscrewing is slowed down so that the gases contained in the container cannot suddenly escape, thus reducing the risk of splashes of cyanoacrylic adhesive, for example, getting into the operator's eyes.
  • valve tube Since the closure according to the invention is opened and closed by rotation and is self-cleaning, its tip need not be accessible, which makes it possible to design the valve tube on the outside as a Luer cone, which thus results in a standard connector part, very easily connectable to the hoses, needles, etc. are.
  • closure according to the invention is placed on a container, the dimensions of which in the It is a significant advantage of the invention that the closure with the thumb and forefinger of the same hand holding the container can be opened and closed, ie the closure according to the invention enables one-hand operation.
  • the other hand remains free, for example to hold parts during gluing work.
  • FIGS. 7, 8 and 9 show the closure in longitudinal section in its screwed or screwed-on state and in FIG. 9 additionally an upper part of a container.
  • the closure according to the invention is intended to interact with a container containing a flowable substance, either in order to seal the container tightly or to allow the flowable substance to exit the container through the closure, for example under the influence of a gas pressure or a force Piston on the container if it is stiff, or by squeezing a flexible container by hand.
  • a lower part 1 (see FIGS. 1, 3 and 5) and an upper part 2 (see FIGS. 2, 4 and 6) of the closure according to the invention (see FIGS. 7 and 8) are both in relation to an axis of symmetry A of Closure essentially rotationally symmetrical.
  • the lower part 1 and the upper part 2 are both made of plastic.
  • the lower part 1 comprises a screw cylinder 120 which can be placed on a container 127.
  • the upper part of the container 127 with a collar 128 is visible in FIGS. 7 and 8.
  • a fastening member 102, 102 ' is provided, for example in the form of clamping ribs 102 and locking ribs 102'.
  • the lateral surface 107 ends at the lower end 103 by forming the edge of a lower opening 105 and at the upper end 104 by forming the edge of an upper opening 106.
  • outwardly projecting markings 116 are arranged at regular intervals from one another. These markings are designed, for example, as outwardly projecting elements, but could also be designed as an embossing pattern visible from the outside or in some other way. Several or only one marking can be provided.
  • a cylinder section 110 is arranged axially symmetrically above the screw cylinder 120 and is provided with a sealing curvature 111 in the vicinity of its upper end 112.
  • the sealing curvature 111 is formed on the cylinder section 110 as a bead and, starting therefrom, is directed radially outwards.
  • the upper part 2 comprises a screw cylinder 220 which can be placed on the screw cylinder of the lower part 1.
  • the screw cylinder 220 can be enclosed at the lower end by a removable guarantee ring (not shown).
  • the guarantee ring interacts with projections arranged on the lower part 1, in the present training example with the four outwardly projecting markings 116, in order to twist the upper part 2 relative to the lower part 1 and thus to open the To prevent closure.
  • the use of the contents of the container is thus prevented as long as the guarantee ring is not removed. Once the guarantee ring has been removed, it cannot be replaced on the clasp.
  • the lateral surface 207 ends at the lower end 203 by forming the edge of a lower opening 205 and at the upper end 204 by forming the edge of an upper opening 206.
  • a mark 216, 216 ' which is visible from the outside is arranged.
  • This mark is shown in the illustrated training example both on the approximately cylindrical outer wall of the upper part 2 (marking 216) and essentially visible from above on an upward facing surface of the upper part 2 (marking 216 ').
  • This marking is designed, for example, as an embossed pattern visible from the outside or above, but could also be designed as an element protruding outwards or in some other way.
  • One or more markings can be provided.
  • the markings on the lower part 1 and on the upper part 2 are arranged with respect to one another such that they are opposite one another in the assembled state of the closure. If the closure is screwed as far as it will go, at least one of the markings 116 arranged on the lower part 1 lies opposite one of the markings 216, 216 'arranged on the upper part 2.
  • a cylinder section 210 is arranged axially symmetrically, which cooperates with the sealing curvature 111 of the cylinder section 110 of the lower part 1, in order to ensure a good seal between the lower part 1 and the upper part 2 against air entry and the exit of the liquid in the container.
  • valve pin 109 can be axially displaced relative to valve tube 209 by rotating upper part 2 relative to lower part 1.
  • the two cylinder sections 110 and 210 coaxially enclose one another over at least part of their length, and they are axially offset relative to one another by rotating the upper part 2 relative to the lower part 1, the two cylinder sections 110 and 210 remain but always sealed to each other.
  • valve pin 109 An axially arranged, upwardly directed valve pin 109 is held on the cylinder section 110 of the lower part 1 and above it with the aid of three connecting webs 108.
  • the cylinder section 110 which is arranged on the inside in the assembled state of the closure, is thus located in the central region of the lower part 1 between the external thread 101 and the valve pin 109.
  • valve tube 209 is held on the cylinder section 210 of the upper part 2 and above it with the aid of an essentially conical intermediate part 208.
  • the cylinder section 210 which is arranged on the outside in the assembled state of the closure, is thus located in the central region of the upper part 2 between the internal thread 201 and the valve tube 209.
  • the upper ends 112 and 212 of the two cylinder sections 110 and 210 lie opposite one another at substantially the same height when the closure is in the assembled state and is fully screwed on.
  • the external thread 101 and the internal thread 201 together form a screw thread with a given pitch, which defines a stroke of the upper part 2 relative to the lower part 1 in accordance with the angle of rotation of the upper part 2 relative to the lower part 1.
  • valve pin 109 and the valve tube 209 are dimensioned such that in the assembled state of the closure and when it is fully screwed in, the valve pin 109 is coaxially enclosed by the valve tube 209 essentially over the entire length of the valve tube 209.
  • the length of the valve pin 109 and the length of the valve tube 209 in relation to the stroke of the upper part 2 relative to the lower part 1 are dimensioned such that in the assembled state of the closure and when it is fully screwed on, the valve pin 109 lies essentially outside the valve tube 209 .
  • a sealing part 113 is provided, which is formed axially thereon as an extension of the valve pin 109. In the assembled state of the closure and when it is fully screwed on, the upper opening 206 of the upper part 2 is plugged by the sealing part 113.
  • valve pin 109 and the valve tube 209 are both frustoconical. Both taper towards the upper opening 206 of the upper part 2 (viewed in the assembled state of the closure).
  • the cone angle of the valve pin 109 is more acute than the cone angle of the valve tube 209, so that in the assembled state of the closure and when it is fully screwed on, the valve pin 109 is always at a distance from the valve tube 209. This facilitates a meterable opening of the valve composed of the valve pin 109 and the valve tube 209.
  • the sealing part 113 can be cylindrical as in the embodiment shown in FIGS. 1, 7 and 8. As in a variant shown in FIG. 3, the sealing part 113 can also be designed as a continuous conical extension of the conical valve pin 109.
  • the sealing part 113 is dimensioned approximately as long as the upper part 2 is thick at its upper end 204 in the region of its upper opening 206. Therefore, an upper end 114 of the sealing part 113 is approximately flush with the upper end 204 of the upper part 2 when the closure is in the assembled state and fully screwed, i.e. the sealing part 113 then hardly protrudes axially.
  • the sealing part 113 is dimensioned longer than the upper part 2 is thick at its upper end 204 in the area of its upper opening 206. Therefore, in FIG. 9, an upper end 114 of the sealing part 113 projects above the upper end 204 of the upper part 2 in the assembled state of the closure and when it is fully screwed on, ie the sealing part 113 then protrudes axially by a predetermined projection height.
  • the diameter of the sealing part 113 on the lower part 1 is 0.01 to 0.25 mm larger than the diameter of the upper opening 206 on the upper part 2.
  • the sealing part can 113 can thus only be introduced into the upper opening 206 against the effect of the elasticity of the material of the plastic.
  • the material of the plastic is chosen accordingly with regard to its elasticity. In order to facilitate the insertion of the sealing part 113 into the upper opening 206, this can, as can be seen in FIG. 4, be provided with a conical widening on its underside.
  • an outer wall 217 of the valve tube 209 is designed as a standard cone, for example as a Luer cone.
  • the axially attached cylinder section 110 projects into the screw cylinder 120 at a radial distance, such that an arch 122 with an essentially cylindrical inner surface 123 is formed between the screw cylinder 120 and the cylinder section 110.
  • a rib 115 is arranged which is parallel to the axis A, is directed radially inward and is at a distance from the axis A.
  • the rib 115 is designed as a flat wall which divides the arch 122 by connecting the cylinder section 110 to the cylindrical inner surface 123.
  • a downward chicane 215 is arranged at its lower end 224, which is parallel to the axis A, is at a distance from the axis A and essentially as a combination of a full sector and the remaining gap one cylindrical outer surface is formed.
  • the baffle 215 is provided with a downward-pointing tip 225 at its lower end near the front edge when it is screwed on and with a tail-shaped extension at its upper end near the rear edge when it is screwed on.
  • the rib 115 and the chicane 215 cooperate in order to limit the rotation of the upper part 2 relative to the lower part 1 by abutting one another.
  • the angle of rotation of the upper part 2 relative to the lower part 1, which is permitted by the rib 115 and the chicane 215, is in principle smaller than a full rotation, in the illustrated embodiment the width of the rib 115 and the arc length of the chicane 215 are selected such that the permitted angle of rotation is approximately a three-quarter turn .
  • the corresponding stroke of the upper part 2 relative to the lower part 1 in the configuration shown in FIGS. 1 to 8 is dimensioned such that the sealing part 113, when the closure is assembled and fully screwed, just stuffs the upper opening 206, in such a way that the upper end 114 of the sealing part 113 is approximately flush with the upper opening 206 in the axial direction.
  • the stroke of the upper part 2 relative to the lower part 1 is longer than the sum of the thickness of the upper part 2 (at its upper end 204 in the region of its upper opening 206) and the projection height of the sealing part 113 (above the upper one End 204 of the upper part 2 in the assembled state of the closure and when it is fully screwed).
  • This ensures that the sealing part 113, even at the twist angle limited by the rib 115 and the chicane 215, fully crosses the upper opening 206 when the closure is mounted and fully screwed in such that the upper end 114 of the sealing part 113 is axially above the top opening 206 is located.
  • the length of the sealing part 113 is relative to the With this approved angle of rotation, lower part 1 should always be dimensioned such that when the closure is assembled and when it is screwed on as far as it will go, the upper end 114 of the sealing part 113 is withdrawn from the upper opening 206 of the upper part 2 and most of the valve tube 209 . Then the upper opening 206 and for the most part the valve tube 209 are released for the flow of the flowable substance contained in the container.
  • a cam 118 which is arranged on the cylindrical inner surface 123 of the arch 122 at a distance from the axis A and parallel to it and is directed radially inwards.
  • the length of the cam 118 in the direction parallel to the axis A is dimensioned such that the cam 118 interacts with the baffle 215 when the closure is installed and is in a position between fully screwed on and at most a quarter screwed on.
  • the interaction of the cam 118 with the baffle 215 consists in a friction which can be overcome against the effect of the elasticity of the material and prevents the upper part 2 from rotating relative to the lower part 1.
  • FIG. 7 and 8 show the entire closure according to the invention in an axial longitudinal section.
  • FIGS. 7 and 9 show the closure in the closed state, FIG. 9 also showing a container 127.
  • the upper part 2 is screwed completely onto the lower part 1 by means of the external thread 101 and the internal thread 201 as a guide and fastening.
  • the container 127 is held with its collar 128 by the clamping ribs 102 and locking ribs 102 'existing fastening member 102, 102' in the lower part 1 of the closure.
  • the chicane 215 stops at the rib 115. It is particularly visible how the upper opening 206 is penetrated by the sealing part 113 and is therefore completely closed, the valve pin 109 is completely enclosed by the valve tube 209 and largely fills it, and the upper end 114 of the sealing part 113 in FIG.
  • the dosing space between the lower part 1 and the upper part 2 extends in the axial direction from the sealing by the bead 111 between the cylinder sections 110 and 210 to the sealing between the sealing part 113 and the upper opening 206 against the effect of the elasticity of the material.
  • This dosing room is completely sealed from the outside air and has a very small volume. It contains flowable substance both before the first use of the closure and afterwards or, for example, from the manufacture of the closure, possibly a gas from the container 127, which gas can be a protective gas which was also filled in when the container 127 was filled .
  • FIG. 8 shows the closure in the open state.
  • the upper part 2 is screwed as far as possible onto the lower part 1.
  • the container 127 is held with its collar 128 by the clamping ribs 102 and locking ribs 102 'existing fastening member 102, 102' in the lower part 1 of the closure.
  • the chicane 215 is not visible because it lies above the drawing, ie in front of the rib 115, in the viewing direction.
  • the baffle 215 is in turn at the rib 115 in the stop, in the situation of FIG. 8, however, on the other side of the rib 115 and with its other edge than in the situation of FIG. 7.
  • This stop prevents complete unscrewing, lifting and Removal of the upper part 2 from the lower part 1. It is particularly visible how the upper opening 206 is completely open and released by the sealing part 113, the upper end 114 of the sealing part 113 is withdrawn from the upper opening 206 and the valve pin 109 is withdrawn from the valve tube 209.
  • the flowable substance from the container 127 can flow freely through the upper opening 106 of the lower part 1 into the dosing space between the lower part 1 and the upper part 2.
  • the outside air is only in contact with the substance from the container 127 at the upper opening 206 and does not come into contact with the substance in container 127 as long as there is overpressure in container 127, ie as long as container 127, when it is stiff, is under gas pressure or piston force and, if it is flexible, is pressed by hand.
  • the upper opening 206 is largely or completely clear from the sealing part 113, but the valve pin 109 is only partially enclosed by the valve tube 209 and partially fills it, depending on the angle of rotation from the upper part 2 to the lower part 1. It is precisely this dependency that enables a fine, continuously adjustable metering of the flow of the flowable substance from the container 127 through the closure according to the invention.
  • the interaction of the cam 118 with the baffle 215 results in friction which prevents unintentional rotation of the upper part 2 relative to the lower part 1 and slows down an intentional rotation, the latter in order to prevent the substance or gases contained in the container from suddenly escaping and endangering the operator .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Packages (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Package Specialized In Special Use (AREA)
  • Tubes (AREA)

Abstract

The closure is made of plastic in two parts. A top part (2) comprises an internal thread and a continuous outer surface (207) and an axial outer cylindrical portion (210) and, above the latter, a valve tube (209) which is held by means of a conical transition part (208). A bottom part (1) comprises an external thread (101) and a continuous outer surface (107) and an axial inner cylindrical portion (110) with, at its upper end (112), a sealing bead (111) facing the outer cylindrical portion (210) and, above said sealing bead, a valve pin (109) which is held by means of connecting webs (108). By rotating the top part (2) relative to the bottom part (1), the top part (2) is offset axially relative to the bottom part (1). A sealing part (113) is moulded axially onto the upper end of the valve pin (109). When the closure is screwed completely closed, the sealing part (113) fills the upper opening (206) of the top part (2). Its upper end (114) is flush with or projects over the top part (2) and the valve pin (109) is enclosed by the valve tube (209). When the closure is screwed completely closed, the valve pin (109) is located outside the valve tube (209). A rib (115) on the bottom part (1) and a baffle (215) on the top part (2) interact to limit the rotation of the top part (2) relative to the bottom part (1) by striking against one another to an angle of rotation of less than one complete revolution. <IMAGE>

Description

Die vorliegende Erfindung betrifft einen zweiteiligen Verschluss aus Kunststoff für einen eine fliessfähige Substanz enthaltenden Behälter, gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a two-part closure made of plastic for a container containing a flowable substance, according to the preamble of claim 1.

Aus DE-A-3727789 ist ein Verschluss bekannt, der eine dosierte Abgabe des flüssigen Inhalts des Behälters ermöglicht. Nachteilig ist bei diesem Verschluss, dass er einen Totraum aufweist, der beim Austritt der Flüssigkeit von dieser nicht gespült wird. Einen Totraum weist auch ein gattungsgemäßer Verschluß nach der US-A- 3 216 630 auf. Teile der Flüssigkeit können dort längere Zeit verweilen, was insbesondere bei Flüssigkeiten mit begrenzter Lagerfähigkeit beispielsweise wegen spontaner Aushärtung oder sonstiger Veränderung, beispielsweise bei gewissen Einkomponentenklebstoffen, Fetten, Lebensmitteln usw., unzulässig ist. Nachteilig ist bei diesen Verschlüssen ausserdem, dass sie einen Ausgussbereich aufweisen, wo nach Beendigung des Flüssigkeitaustritts ein Flüssigkeitsrest verbleibt, der dann in längerem Kontakt mit der Aussenluft steht. Wiederum ist dies unzulässig bei Flüssigkeiten, die im Kontakt mit der Aussenluft aushärten oder sich sonstwie verändern können, beispielsweise bei Einkomponentenklebstoffen, die an der Luft aushärten, Fetten, die ranzig werden, oder Lebensmitteln, die austrocknen.From DE-A-3727789 a closure is known which enables a metered delivery of the liquid content of the container. The disadvantage of this closure is that it has a dead space that is not rinsed by the liquid when it escapes. A generic closure according to US Pat. No. 3,216,630 also has a dead space. Parts of the liquid can remain there for a long time, which is particularly inadmissible for liquids with limited shelf life, for example because of spontaneous hardening or other changes, for example with certain one-component adhesives, fats, foods, etc. A further disadvantage of these closures is that they have a pouring area where a liquid residue remains after the liquid has ended, which is then in longer contact with the outside air. Again, this is inadmissible for liquids that cure or otherwise change in contact with the outside air, for example in the case of one-component adhesives that cure in the air, greases that become rancid, or foods that dry out.

Aus EP-A-0296103 ist ein Verschluss bekannt, der ein Stopfelement aufweist, welches im geschlossenen Zustand des Verschlusses die obere Oeffnung des Oberteils stopft. Damit soll verhindert werden, dass es einen Bereich des Verschlusses gibt, wo nach Beendigung des Flüssigkeitaustritts ein Flüssigkeitsrest verbleibt, der dann in längerem Kontakt mit der Aussenluft steht. Nachteilig ist dabei, dass nach Beendigung des Flüssigkeitaustritts immer noch ein Tropfen Flüssigkeit die obere Oeffnung des Oberteils samt dem Stopfelement überbrückt, insbesondere wenn die Flüssigkeit so zähflüssig ist, dass auch ein grosser Tropfen nicht durch Abschütteln entfernbar ist. Der Verschluss nach EP-A-0296103 wird durch diesen Tropfen verschmutzt und/oder verklebt. Zudem weist der Verschluss nach EP-A-0296103 einen Totraum auf, der beim Austritt der Flüssigkeit von dieser nicht gespült wird. Im übrigen ist der Verschluss nach EP-A-0296103 mit Sollbruchstellen oder flexiblen Teilen versehen und daher entsprechend aufwendig herzustellen.From EP-A-0296103 a closure is known which has a stuffing element which, in the closed state of the closure, stuffs the upper opening of the upper part. This is to prevent that there is an area of the closure where a liquid residue remains after the liquid has ended, which is then in longer contact with the outside air. The disadvantage here is that after the liquid has stopped flowing, a drop of liquid still bridges the upper opening of the upper part together with the stuffing element, especially if the liquid is so viscous is that even a large drop cannot be removed by shaking it off. The closure according to EP-A-0296103 is soiled and / or glued by this drop. In addition, the closure according to EP-A-0296103 has a dead space which is not rinsed by the liquid when it escapes. Otherwise, the closure according to EP-A-0296103 is provided with predetermined breaking points or flexible parts and is therefore correspondingly expensive to manufacture.

Aufgabe der vorliegenden Erfindung ist es, einen Verschluss der eingangs genannten Art zu schaffen, der keinen beim Austritt der Flüssigkeit von dieser nicht gespülten Totraum und keinen Ausgussbereich aufweist, der nach Beendigung des Flüssigkeitaustritts den Verbleib eines Flüssigkeitsrests in Kontakt mit der Aussenluft ermöglicht, ferner keine nennenswerte Bildung eines die obere Oeffnung des Oberteils überbrückenden Tropfens zulässt, und ausserdem kostengünstig herstellbar ist.The object of the present invention is to provide a closure of the type mentioned at the outset, which has no dead space not rinsed when the liquid emerges from it and no pouring area which, after the liquid exit has ended, makes it possible for a liquid residue to remain in contact with the outside air, furthermore none appreciable formation of a drop bridging the upper opening of the upper part, and is also inexpensive to produce.

Diese Aufgabe wird erfindungsgemäss von einem Verschluss mit der im Anspruch 1 angegebenen Merkmalskombination gelöst. Vorteilhafte Ausbildungen des erfindungsgemässen Verschlusses ergeben sich aus den abhängigen Ansprüchen.This object is achieved according to the invention by a closure with the combination of features specified in claim 1. Advantageous designs of the closure according to the invention result from the dependent claims.

Der erfindungsgemässe Verschluss ist zweiteilig und im wesentlichen drehsymmetrisch ausgebildet, so dass er kostengünstig herstellbar ist.The closure according to the invention is constructed in two parts and is essentially rotationally symmetrical, so that it can be produced inexpensively.

Dadurch, dass gemäß einer vorteilhaften Weiterbildung der Ventilstift und das Ventilrohr beide kegelstumpfförmig mit unterschiedlichen Konuswinkel ausgebildet und voneinander im Abstand sind, wird im Vergleich zu bekannten Verschlüssen die Fähigkeit des Verschlusses verbessert, durch Verdrehen die Flüssigkeit zu dosieren, insbesondere erfolgt die Einstellung der Dosierung progressiver.The fact that, according to an advantageous further development, the valve pin and the valve tube are both frustoconical in shape with different cone angles and are spaced apart from one another, compared to known closures the ability of the closure to meter the liquid by twisting, in particular the setting of the metering takes place more progressively .

Die beiden Zylinderabschnitte gewährleisten mit Hilfe der Dichtungswölbung die Abdichtung des Oberteils gegenüber dem Unterteil. Bei aufgeschraubtem Verschluss strömt die Flüssigkeit innerhalb des konischen Zwischenteils an den Verbindungstegen vorbei. Bei voll zugeschraubtem Verschluss liegen die Zylinderabschnitte im mittleren Bereich des Verschlusses zwischen dem Gewinde und dem Ventil, und die oberen Enden der Zylinderabschnitte liegen etwa einander gegenüber in Nähe des unteren Endes des konischen Zwischenteils. Durch diese Anordnung und dadurch, dass die Dichtungswölbung im wesentlichen am oberen Ende des inneren Zylinderabschnitts angeformt ist, gibt es beim erfindungsgemässen Verschluss im wesentlichen keinen Totraum.The two cylinder sections ensure the sealing of the upper part against the lower part with the help of the seal curvature. When the closure is screwed on, the liquid flows past the connecting webs within the conical intermediate part. When the lock is fully screwed on, the cylinder sections are in the middle area of the lock between the thread and the valve, and the upper ends of the cylinder sections are approximately opposite each other in the vicinity of the lower end of the conical intermediate part. As a result of this arrangement and because the sealing curvature is formed essentially at the upper end of the inner cylinder section, there is essentially no dead space in the closure according to the invention.

Die bevorzugte Ausbildung der Dichtungswölbung als Wulst versteift diese sehr, was die Abdichtung noch verbessert.The preferred embodiment of the sealing curvature as a bead stiffens it very much, which further improves the sealing.

Beim Zuschrauben des Verschlusses wird die obere Oeffnung des Oberteils durch den Abdichtungsteil gestopft. Wenn der Abdichtungsteil so bemessen ist, dass dann sein oberes Ende etwa bündig zur oberen Oeffnung des Oberteils liegt, so bildet dort die Substanz, die beim Zuschrauben des Verschlusses vom Abdichtungsteil aus dem Oberteil ausgestossen wurde, einen Rest in Form eines Wulstes, den, auch wenn er aushärtet, die Bedienungsperson mit der Fingerkuppe oder mit dem Nagel leicht entfernen kann. Wenn, in einer ebenfalls bevorzugten Alternative, der Abdichtungsteil beim Zuschrauben des Verschlusses nicht nur in die obere Oeffnung des Oberteils eingeführt, sondern weiter durch den Oberteil vorgestossen wird, so dass sein oberes Ende im voll zugeschraubten Zustand des Verschlusses den Oberteil überragt, dann wird die im Bereich der oberen Oeffnung verbleibende Flüssigkeit weggestossen und es kann dort nur noch wenig Rest übrigbleiben und aushärten. Auf jeden Fall kann sich kein aushärtender Propfen bilden.When the closure is screwed on, the upper opening of the upper part is plugged through the sealing part. If the sealing part is dimensioned such that its upper end is approximately flush with the upper opening of the upper part, then the substance that was expelled from the upper part when the closure was screwed on forms a residue in the form of a bead, the, too if it hardens, the operator can easily remove it with the fingertip or with the nail. If, in a likewise preferred alternative, the sealing part is not only inserted into the upper opening of the upper part when the closure is screwed on, but is further pushed forward through the upper part so that its upper end projects beyond the upper part when the closure is fully screwed down, then the Any liquid remaining in the area of the upper opening is pushed away and only a little residue can remain and harden there. In any case, no hardening plug can form.

Ausserdem spreizt der Abdichtungsteil die obere Oeffnung des Oberteils gegen die Elastizität des Kunststoffes, wenn er in die obere Oeffnung des Oberteils eingeführt wird, da sein Durchmesser grösser ist als derjenige der Oeffnung, wenn der Verschluss aufgeschraubt ist. Dies bewirkt eine Selbstreinigung der oberen Oeffnung sowie eine Verbesserung der Abdichtung.In addition, the sealing part expands the upper opening of the upper part against the elasticity of the plastic when it is inserted into the upper opening of the upper part, since its diameter is larger than that of the opening when the closure is screwed on. This results in self-cleaning of the upper opening and an improvement in the seal.

Durch die Zusammenwirkung der Schikane und der Rippe wird die Drehung des Verschlusses auf das zulässige Mass beschränkt. Einerseits kann der Verschluss nicht aufgehen, so dass keine unkontrollierte Flüssigkeitsausgabe erfolgen kann, was unter anderem bei Cyanacrylklebstoffen für die umstehenden Personen sehr gefährlich wäre. Andererseits ermöglicht die Festlegung des Drehwinkels und der beiden Endstellungen des Verschlusses, die verschiedenen Teile des Verschlusses genau so zu bemessen, dass der Abdichtungsteil beim Aufschrauben die Oeffnung des Verschlusses und das Ventilrohr kontinuierlich immer mehr freigibt, womit eine optimale Empfindlichkeit der Dosierung erreicht wird, und in der zugeschraubten Endstellung präzis gegenüber dem Oberteil mit den Vorteilen, die im vorangehenden dargelegt wurden.Due to the interaction of the chicane and the rib, the rotation of the closure is allowed limited. On the one hand, the closure cannot open, so that no uncontrolled dispensing of liquid can take place, which would be very dangerous for the people around, in particular with cyanoacrylate adhesives. On the other hand, the determination of the angle of rotation and the two end positions of the closure enables the various parts of the closure to be dimensioned exactly in such a way that the sealing part continuously releases the opening of the closure and the valve tube more and more when screwing on, which achieves optimal metering sensitivity, and in the screwed end position precisely compared to the upper part with the advantages that were explained in the previous.

Die Zusammenwirkung der Schikane und der Rippe ermöglicht auch, an beiden Teilen des Verschlusses Markierungen anzubringen, deren Zusammenwirkung einer Bedienungsperson erlaubt, die Dosierung genau und wiederholbar einzustellen.The interaction of the baffle and the rib also allows markings to be made on both parts of the closure, the interaction of which allows an operator to adjust the dosage accurately and repeatably.

Die Zusammenwirkung der Schikane mit dem an der Rippe angeordneten Nocken ermöglicht, den Verschluss in seiner zugeschraubten Endstellung und in Nähe davon, beispielsweise über eine erste Vierteldrehung des Aufschraubens, leicht zu bremsen bzw. festzuhalten. Diese Massnahme bringt einerseits den Vorteil, das ein unerwünschtes spontanes oder zufälliges Aufschrauben verhindert wird. Andererseits bringt diese Massnahme den Vorteil, dass das anfängliche Aufschrauben gebremst wird, so dass die im Behälter enthaltene Gase nicht plötzlich entweichen können, womit die Gefahr vermindert wird, dass Spritzer beispielsweise von Cyanacrylklebstoff in die Augen der Bedienungsperson gelangen.The interaction of the baffle with the cam arranged on the rib makes it easy to brake or hold the closure in its screwed-on end position and in the vicinity thereof, for example by a first quarter turn of the screwing on. On the one hand, this measure has the advantage that an undesired spontaneous or accidental screwing is prevented. On the other hand, this measure has the advantage that the initial unscrewing is slowed down so that the gases contained in the container cannot suddenly escape, thus reducing the risk of splashes of cyanoacrylic adhesive, for example, getting into the operator's eyes.

Da der erfindungsgemässe Verschluss durch Drehung geöffnet und geschlossen wird und selbstreinigend ist, braucht seine Spitze nicht zugänglich zu sein, was ermöglicht, das Ventilrohr aussen als Luer-Konus auszubilden, was somit einen Normanschlussteil ergibt, an den Schläuche, Nadeln usw. sehr leicht anschliessbar sind.Since the closure according to the invention is opened and closed by rotation and is self-cleaning, its tip need not be accessible, which makes it possible to design the valve tube on the outside as a Luer cone, which thus results in a standard connector part, very easily connectable to the hoses, needles, etc. are.

Wenn der erfindungsgemässe Verschluss auf einem Behälter aufgesetzt ist, der sich von seinen Abmessungen her in die Hand nehmen lässt, so ist es eine bedeutender Vorteil der Erfindung, dass der Verschluss mit dem Daumen und dem Zeigefinger der gleichen Hand, die den Behälter hält, öffnen und schliessen lässt, d.h. der erfindungsgemässe Verschluss ermöglicht die Einhandbedienung. Die andere Hand bleibt frei, beispielsweise zum Halten von Teilen bei Klebarbeiten.If the closure according to the invention is placed on a container, the dimensions of which in the It is a significant advantage of the invention that the closure with the thumb and forefinger of the same hand holding the container can be opened and closed, ie the closure according to the invention enables one-hand operation. The other hand remains free, for example to hold parts during gluing work.

Nachstehend wird ein Ausbildungsbeispiel der Erfindung anhand der Zeichnung näher erläutert. Es zeigen:

  • Fig. 1 einen Unterteil des erfindungsgemässen Verschlusses, in teilweise aufgebrochener Vorderansicht;
  • Fig. 2 einen Oberteil des erfindungsgemässen Verschlusses, in teilweise aufgebrochener Vorderansicht;
  • Fig. 3 den Unterteil der Fig. 1, in Vorderansicht im axialen Längsschnitt;
  • Fig. 4 den Oberteil der Fig. 2, in Vorderansicht im axialen Längsschnitt;
  • Fig. 5 den Unterteil der Fig. 1, in Draufsicht;
  • Fig. 6 den Oberteil der Fig. 2, in Untersicht;
  • Fig. 7 den gesamten erfindungsgemässen Verschluss im zugeschraubten Zustand, im Schnitt, mit einer ersten besonderen Ausbildung des Abdichtungsteils;
  • Fig. 8 den gesamten erfindungsgemässen Verschluss im aufgeschraubten Zustand, im Schnitt; und
  • Fig. 9 den gesamten erfindungsgemässen Verschluss im zugeschraubten Zustand wie in Fig. 7 sowie den oberen Teil eines Behälters, auf dem der Verschluss montiert ist, im Schnitt, mit einer zweiten besonderen Ausbildung des Abdichtungsteils.
An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. Show it:
  • Figure 1 shows a lower part of the closure according to the invention, in a partially broken front view.
  • 2 shows an upper part of the closure according to the invention, in a partially broken front view;
  • 3 shows the lower part of FIG. 1, in a front view in axial longitudinal section;
  • 4 shows the top part of FIG. 2, in a front view in axial longitudinal section;
  • Fig. 5 shows the lower part of Figure 1, in plan view.
  • Fig. 6, the top of Figure 2, in bottom view.
  • 7 shows the entire closure according to the invention in the screwed-on state, in section, with a first special embodiment of the sealing part;
  • 8 shows the entire closure according to the invention in the screwed-on state, in section; and
  • 9 shows the entire closure according to the invention in the screwed-on state as in FIG. 7 and the upper part of a container on which the closure is mounted, in section, with a second special embodiment of the sealing part.

Im nachstehend beschriebenen Ausführungsbeispiel der Erfindung wird, wegen der Zusammenwirkung der Teile, auf alle Figuren gleichzeitig Bezug genommen, wobei einander gleiche Teile in allen Figuren mit gleichen Bezugszeichnen versehen sind. In einer Gesamtdarstellung in Vorderansicht oder Draufsicht des zweiteiligen Verschlusses im montierten Zustand wurde der Unterteil des Verschlusses vom Oberteil fast ganz verdeckt werden. Deswegen wird für die Darstellung der Zusammenwirkung der beiden Teile des Verschlusses auf die Figuren 7, 8 und 9 verwiesen, die den Verschluss im Längsschnitt in seinem zugeschraubten bzw. aufgeschraubten Zustand sowie in Fig. 9 zusätzlich einen oberen Teil eines Behälters zeigen.In the exemplary embodiment of the invention described below, due to the interaction of the parts, all figures are referred to at the same time, identical parts being provided with the same reference symbols in all figures. In an overall view in front view or top view of the two-part closure in the assembled state, the lower part of the closure was almost completely covered by the upper part. Therefore, for the representation of the interaction of the two parts of the closure refer to FIGS. 7, 8 and 9, which show the closure in longitudinal section in its screwed or screwed-on state and in FIG. 9 additionally an upper part of a container.

Der erfindungsgemässe Verschluss ist dazu bestimmt, mit einem eine fliessfähige Substanz enthaltenden Behälter zusammenzuwirken, entweder um den Behälter dicht zu verschliessen oder um den Austritt der fliessfähigen Substanz aus dem Behälter durch den Verschluss hindurch zu erlauben, beispielsweise unter Einwirkung von Druck eines Gases oder Kraft eines Kolbens auf den Behälter, wenn dieser steif ist, oder durch Quetschen eines flexiblen Behälters von Hand.The closure according to the invention is intended to interact with a container containing a flowable substance, either in order to seal the container tightly or to allow the flowable substance to exit the container through the closure, for example under the influence of a gas pressure or a force Piston on the container if it is stiff, or by squeezing a flexible container by hand.

Ein Unterteil 1 (vgl. Fig. 1, 3 und 5) und ein Oberteil 2 (vgl. Fig. 2, 4 und 6) des erfindungsgemässsen Verschlusses (vgl. Fig. 7 und 8) sind beide in bezug auf eine Symmetrieachse A des Verschlusses im wesentlichen drehsymmetrisch. Der Unterteil 1 und der Oberteil 2 sind beide aus Kunststoff gefertigt.A lower part 1 (see FIGS. 1, 3 and 5) and an upper part 2 (see FIGS. 2, 4 and 6) of the closure according to the invention (see FIGS. 7 and 8) are both in relation to an axis of symmetry A of Closure essentially rotationally symmetrical. The lower part 1 and the upper part 2 are both made of plastic.

Der Unterteil 1 umfasst einen Schraubzylinder 120, der auf einen Behälter 127 aufsetzbar ist. Der obere Teil des Behälters 127 mit einem Kragen 128 ist auf Fig. 7 und 8 sichtbar. Zur Befestigung des Unterteils 1 auf den Behälter 127 ist ein Befestigungsorgan 102, 102′ beispielsweise in Form von Klemmrippen 102 und Arretierrippen 102′ vorgesehen.The lower part 1 comprises a screw cylinder 120 which can be placed on a container 127. The upper part of the container 127 with a collar 128 is visible in FIGS. 7 and 8. To attach the lower part 1 to the container 127, a fastening member 102, 102 'is provided, for example in the form of clamping ribs 102 and locking ribs 102'.

Zwischen einem unteren Ende 103 und einem oberen Ende 104 des Unterteils 1 befindet sich eine im wesentlichen drehsymmetrische, nicht ge- bzw. durchlochte Mantelfläche 107, die also kontinuierlich und dicht ist. Die Mantelfläche 107 endet am unteren Ende 103, indem sie den Rand einer unteren Oeffnung 105 bildet, und am oberen Ende 104, indem sie den Rand einer oberen Oeffnung 106 bildet.Between a lower end 103 and an upper end 104 of the lower part 1 there is an essentially rotationally symmetrical, non-perforated or perforated lateral surface 107, which is therefore continuous and dense. The lateral surface 107 ends at the lower end 103 by forming the edge of a lower opening 105 and at the upper end 104 by forming the edge of an upper opening 106.

Am unteren, dem Behälter zugewandten Ende 103 des Unterteils 1 oder in Nähe davon sind beispielsweise vier nach aussen ragende Markierungen 116 in regelmässigen Abständen zueinander angeordnet. Diese Markierungen sind beispielsweise als nach aussen ragende Elemente ausgebildet, könnten aber auch als von aussen sichtbares Prägemuster oder sonstwie ausgebildet sein. Dabei können mehrere oder nur eine Markierung vorgesehen sein.At the lower end 103 of the lower part 1 facing the container or in the vicinity thereof, for example, four outwardly projecting markings 116 are arranged at regular intervals from one another. These markings are designed, for example, as outwardly projecting elements, but could also be designed as an embossing pattern visible from the outside or in some other way. Several or only one marking can be provided.

Im unteren Bereich des Unterteils 1 befindet sich am Schraubzylinder 120 ein Aussengewinde 101 zur Befestigung und Führung eines Innengewindes 201 des Oberteils 2.In the lower area of the lower part 1 there is an external thread 101 on the screw cylinder 120 for fastening and guiding an internal thread 201 of the upper part 2.

Oberhalb des Schraubzylinders 120 ist axialsymmetrisch ein Zylinderabschnitt 110 angeordnet, der in Nähe seines oberen Endes 112 mit einer Dichtungswölbung 111 versehen ist. Die Dichtungswölbung 111 ist am Zylinderabschnitt 110 als Wulst angeformt und davon ausgehend radial nach aussen gerichtet.A cylinder section 110 is arranged axially symmetrically above the screw cylinder 120 and is provided with a sealing curvature 111 in the vicinity of its upper end 112. The sealing curvature 111 is formed on the cylinder section 110 as a bead and, starting therefrom, is directed radially outwards.

Der Oberteil 2 umfasst einen Schraubzylinder 220, der auf den Schraubzylinder des Unterteils 1 aufsetzbar ist. Der Schraubzylinder 220 kann am unteren Ende durch einen nicht dargestellten entfernbaren Garantiering umschlossen sein. Im montierten Zustand des Verschlusses und wenn dieser voll zugeschraubt ist, wirkt der Garantiering mit am Unterteil 1 angeordneten Vorsprüngen zusammen, im vorliegenden Ausbildungsbeispiel mit den vier nach aussen ragenden Markierungen 116, um ein Verdrehen des Oberteils 2 gegenüber dem Unterteil 1 und damit eine Oeffnung des Verschlusses zu verhindern. Die Benützung des Inhalts des Behälters wird somit verhindert, solange der Garantiering nicht entfernt wird. Nach Entfernung des Garantierings kann dieser nicht wieder am Verschluss angebracht werden.The upper part 2 comprises a screw cylinder 220 which can be placed on the screw cylinder of the lower part 1. The screw cylinder 220 can be enclosed at the lower end by a removable guarantee ring (not shown). In the assembled state of the closure and when it is fully screwed on, the guarantee ring interacts with projections arranged on the lower part 1, in the present training example with the four outwardly projecting markings 116, in order to twist the upper part 2 relative to the lower part 1 and thus to open the To prevent closure. The use of the contents of the container is thus prevented as long as the guarantee ring is not removed. Once the guarantee ring has been removed, it cannot be replaced on the clasp.

Zwischen einem unteren Ende 203 und einem oberen Ende 204 des Oberteils 2 befindet sich eine im wesentlichen drehsymmetrische, nicht ge- bzw. durchlochte Mantelfläche 207, die also ebenfalls kontinuierlich und dicht ist. Die Mantelfläche 207 endet am unteren Ende 203, indem sie den Rand einer unteren Oeffnung 205 bildet, und am oberen Ende 204, indem sie den Rand einer oberen Oeffnung 206 bildet.Between a lower end 203 and an upper end 204 of the upper part 2 there is an essentially rotationally symmetrical, non-perforated or perforated lateral surface 207, which is therefore also continuous and dense. The lateral surface 207 ends at the lower end 203 by forming the edge of a lower opening 205 and at the upper end 204 by forming the edge of an upper opening 206.

Am unteren, dem Behälter zugewandten Ende 203 des Oberteils 2 oder in Nähe davon ist beispielsweise eine von aussen sichtbare Markierung 216, 216′ angeordnet. Diese Markierung ist im dargestellten Ausbildungsbeispiel sowohl an der etwa zylindrischen Aussenwand des Oberteils 2 (Markierung 216) als auch im wesentlichen von oben sichtbar an einer nach oben gerichteten Fläche des Oberteils 2 (Markierung 216′) angebracht. Diese Markierung ist beispielsweise als von aussen oder oben sichtbares Prägemuster ausgebildet, könnte aber auch als nach aussen ragendes Element oder sonstwie ausgebildet sein. Dabei können eine oder mehrere Markierungen vorgesehen sein.At the lower, the container-facing end 203 of the upper part 2 or in the vicinity thereof, for example, a mark 216, 216 'which is visible from the outside is arranged. This mark is shown in the illustrated training example both on the approximately cylindrical outer wall of the upper part 2 (marking 216) and essentially visible from above on an upward facing surface of the upper part 2 (marking 216 '). This marking is designed, for example, as an embossed pattern visible from the outside or above, but could also be designed as an element protruding outwards or in some other way. One or more markings can be provided.

Um einer Bedienungsperson zu erlauben, die relative Position bzw. Drehlage des Unterteils 1 zum Oberteil 2 festzustellen, sind die Markierungen am Unterteil 1 und am Oberteil 2 so zueinander angeordnet, dass sie im montierten Zustand des Verschlusses einander gegenüberliegen. Wenn der Verschluss bis zum Anschlag zugeschraubt ist, liegt zumindest eine der am Unterteil 1 angeordneten Markierungen 116 gegenüber einer der am Oberteil 2 angeordneten Markierungen 216, 216′.In order to allow an operator to determine the relative position or rotational position of the lower part 1 in relation to the upper part 2, the markings on the lower part 1 and on the upper part 2 are arranged with respect to one another such that they are opposite one another in the assembled state of the closure. If the closure is screwed as far as it will go, at least one of the markings 116 arranged on the lower part 1 lies opposite one of the markings 216, 216 'arranged on the upper part 2.

Im unteren Bereich des Oberteils 2 befindet sich am Schraubzylinder 220 ein Innengewinde 201 zur Befestigung und Führung auf dem Aussengewinde 101 des Unterteils 1.In the lower area of the upper part 2 there is an internal thread 201 on the screw cylinder 220 for fastening and guiding on the external thread 101 of the lower part 1.

Oberhalb des Schraubzylinders 220 ist axialsymmetrisch ein Zylinderabschnitt 210 angeordnet, der mit der Dichtungswölbung 111 des Zylinderabschnitts 110 des Unterteils 1 zusammenwirkt, um eine gute Abdichtung zwischen dem Unterteil 1 und dem Oberteil 2 gegen Lufteintritt der Austritt der im Behälter befindlichen Flüssigkeit zu gewährleisten.Above the screw cylinder 220, a cylinder section 210 is arranged axially symmetrically, which cooperates with the sealing curvature 111 of the cylinder section 110 of the lower part 1, in order to ensure a good seal between the lower part 1 and the upper part 2 against air entry and the exit of the liquid in the container.

Im montierten Zustand des Verschlusses ist das Innengewinde 201 auf dem Aussengewinde 101 aufgeschraubt und damit wirkverbunden. Somit ist der Ventilstift 109 relativ zum Ventilrohr 209 durch Drehung des Oberteils 2 relativ zum Unterteil 1 axial versetzbar. Dabei umschliessen die beiden Zylinderabschnitte 110 und 210 einander koaxial auf zumindest einem Teil ihrer Länge, und sie werden relativ zueinander durch Drehung des Oberteils 2 relativ zum Unterteil 1 axial versetzt, die beiden Zylinderabschnitte 110 und 210 bleiben aber ständig zueinander abgedichtet.In the assembled state of the closure, the internal thread 201 is screwed onto the external thread 101 and is operatively connected to it. Thus, valve pin 109 can be axially displaced relative to valve tube 209 by rotating upper part 2 relative to lower part 1. The two cylinder sections 110 and 210 coaxially enclose one another over at least part of their length, and they are axially offset relative to one another by rotating the upper part 2 relative to the lower part 1, the two cylinder sections 110 and 210 remain but always sealed to each other.

Am Zylinderabschnitt 110 des Unterteils 1 und oberhalb davon ist mit Hilfe von drei Verbindungsstegen 108 ein axial angeordneter, nach oben gerichteter Ventilstift 109 gehalten. Der Zylinderabschnitt 110, der im montierten Zustand des Verschlusses innen angeordnet ist, befindet sich somit im mittleren Bereich des Unterteils 1 zwischen dem Aussengewinde 101 und dem Ventilstift 109.An axially arranged, upwardly directed valve pin 109 is held on the cylinder section 110 of the lower part 1 and above it with the aid of three connecting webs 108. The cylinder section 110, which is arranged on the inside in the assembled state of the closure, is thus located in the central region of the lower part 1 between the external thread 101 and the valve pin 109.

Am Zylinderabschnitt 210 des Oberteils 2 und oberhalb davon ist mit Hilfe eines im wesentlichen konischen Zwischenteils 208 ein axial angeordnetes Ventilrohr 209 gehalten. Der Zylinderabschnitt 210, der im montierten Zustand des Verschlusses aussen angeordnet ist, befindet sich somit im mittleren Bereich des Oberteils 2 zwischen dem Innengewinde 201 und dem Ventilrohr 209.An axially arranged valve tube 209 is held on the cylinder section 210 of the upper part 2 and above it with the aid of an essentially conical intermediate part 208. The cylinder section 210, which is arranged on the outside in the assembled state of the closure, is thus located in the central region of the upper part 2 between the internal thread 201 and the valve tube 209.

Somit liegen die oberen Enden 112 bzw. 212 der beiden Zylinderabschnitte 110 bzw. 210 im wesentlichen auf gleicher Höhe einander gegenüber, wenn sich der Verschluss im montierten Zustand befindet und voll zugeschraubt ist.Thus, the upper ends 112 and 212 of the two cylinder sections 110 and 210 lie opposite one another at substantially the same height when the closure is in the assembled state and is fully screwed on.

Das Aussengewinde 101 und das Innengewinde 201 bilden zusammen ein Schraubengewinde mit einer gegebenen Steigung, die entsprechend dem Verdrehwinkel des Oberteils 2 relativ zum Unterteil 1 einen Hub des Oberteils 2 relativ zum Unterteil 1 definiert.The external thread 101 and the internal thread 201 together form a screw thread with a given pitch, which defines a stroke of the upper part 2 relative to the lower part 1 in accordance with the angle of rotation of the upper part 2 relative to the lower part 1.

Die jeweiligen Längen des Ventilstifts 109 und des Ventilrohrs 209 sind so bemessen, dass im montierten Zustand des Verschlusses und wenn dieser voll zugeschraubt ist, der Ventilstift 109 vom Ventilrohr 209 koaxial im wesentlichen auf der ganzen Länge des Ventilrohrs 209 umschlossen ist. Andererseits sind die Länge des Ventilstifts 109 und die Länge des Ventilrohrs 209 im Verhältnis zum Hub des Oberteils 2 relativ zum Unterteil 1 so bemessen, dass im montierten Zustand des Verschlusses und wenn dieser voll aufgeschraubt ist, der Ventilstift 109 im wesentlichen ausserhalb des Ventilrohrs 209 liegt.The respective lengths of the valve pin 109 and the valve tube 209 are dimensioned such that in the assembled state of the closure and when it is fully screwed in, the valve pin 109 is coaxially enclosed by the valve tube 209 essentially over the entire length of the valve tube 209. On the other hand, the length of the valve pin 109 and the length of the valve tube 209 in relation to the stroke of the upper part 2 relative to the lower part 1 are dimensioned such that in the assembled state of the closure and when it is fully screwed on, the valve pin 109 lies essentially outside the valve tube 209 .

Am oberen Ende des Ventilstifts 109 ist ein Abdichtungsteil 113 vorgesehen, der als Verlängerung des Ventilstifts 109 axial daran angeformt ist. Im montierten Zustand des Verschlusses und wenn dieser voll zugeschraubt ist, wird die obere Oeffnung 206 des Oberteils 2 vom Abdichtungsteil 113 gestopft.At the upper end of the valve pin 109 is a sealing part 113 is provided, which is formed axially thereon as an extension of the valve pin 109. In the assembled state of the closure and when it is fully screwed on, the upper opening 206 of the upper part 2 is plugged by the sealing part 113.

Der Ventilstift 109 und das Ventilrohr 209 sind beide kegelstumpfförmig. Beide verjüngen sich in Richtung zur oberen Oeffnung 206 des Oberteils 2 hin (im montierten Zustand des Verschlusses betrachtet). Dabei ist der Konuswinkel des Ventilstifts 109 spitzer als der Konuswinkel des Ventilrohrs 209, so dass im montierten Zustand des Verschlusses und wenn dieser voll zugeschraubt ist, der Ventilstift 109 stets einen Abstand zum Ventilrohr 209 aufweist. Damit wird ein dosierbares Oeffnen des aus dem Ventilstift 109 und dem Ventilrohr 209 zusammengestzten Ventils erleichtert.The valve pin 109 and the valve tube 209 are both frustoconical. Both taper towards the upper opening 206 of the upper part 2 (viewed in the assembled state of the closure). The cone angle of the valve pin 109 is more acute than the cone angle of the valve tube 209, so that in the assembled state of the closure and when it is fully screwed on, the valve pin 109 is always at a distance from the valve tube 209. This facilitates a meterable opening of the valve composed of the valve pin 109 and the valve tube 209.

Der Abdichtungsteil 113 kann wie in der in Fig. 1, 7 und 8 dargestellten Ausbildung zylindrisch ausgebildet sein. Wie in einer in Fig. 3 dargestellten Ausbildungsvariante kann der Abdichtungsteil 113 aber auch als stetige konische Verlängerung des konischen Ventilstifts 109 ausgebildet sein.The sealing part 113 can be cylindrical as in the embodiment shown in FIGS. 1, 7 and 8. As in a variant shown in FIG. 3, the sealing part 113 can also be designed as a continuous conical extension of the conical valve pin 109.

In der in Fig. 1 bis 8 dargestellten Ausbildung ist der Abdichtungsteil 113 etwa so lang bemessen, wie der Oberteil 2 an dessen oberem Ende 204 im Bereich seiner oberen Oeffnung 206 dick ist. Daher ist ein oberes Ende 114 des Abdichtungsteils 113 mit dem oberen Ende 204 des Oberteils 2 etwa bündig, wenn der Verschluss im montierten Zustand und voll zugeschraubt ist, d.h. der Abdichtungsteil 113 steht dann axial kaum hervor.In the embodiment shown in FIGS. 1 to 8, the sealing part 113 is dimensioned approximately as long as the upper part 2 is thick at its upper end 204 in the region of its upper opening 206. Therefore, an upper end 114 of the sealing part 113 is approximately flush with the upper end 204 of the upper part 2 when the closure is in the assembled state and fully screwed, i.e. the sealing part 113 then hardly protrudes axially.

In der Ausbildung gemäss Fig. 9 ist der Abdichtungsteil 113 hingegen länger bemessen, als der Oberteil 2 an dessen oberem Ende 204 im Bereich seiner oberen Oeffnung 206 dick ist. Daher überragt in Fig. 9 ein oberes Ende 114 des Abdichtungsteils 113 das obere Ende 204 des Oberteils 2 im montierten Zustand des Verschlusses und wenn dieser voll zugeschraubt ist, d.h. der Abdichtungsteil 113 steht dann axial um eine vorbestimmte Vorsprunghöhe hervor.In the embodiment according to FIG. 9, however, the sealing part 113 is dimensioned longer than the upper part 2 is thick at its upper end 204 in the area of its upper opening 206. Therefore, in FIG. 9, an upper end 114 of the sealing part 113 projects above the upper end 204 of the upper part 2 in the assembled state of the closure and when it is fully screwed on, ie the sealing part 113 then protrudes axially by a predetermined projection height.

Zur besseren Abdichtung ist der Durchmesser des Abdichtungsteils 113 am Unterteil 1 um 0,01 bis 0,25 mm grösser als der Durchmesser der oberen Oeffnung 206 am Oberteil 2. Im montierten Zustand des Verschlusses und wenn dieser bis zum Anschlag aufgeschraubt ist, kann der Abdichtungsteil 113 somit nur gegen die Wirkung der Elastizität des Materials des Kunststoffs in die obere Oeffnung 206 eingeführt werden. Um dies zu ermöglichen, ist das Material des Kunststoffs in bezug auf seine Elastizität entsprechend gewählt. Zur Erleichterung der Einführung des Abdichtungsteils 113 in die obere Oeffnung 206 kann diese, wie in Fig. 4 sichtbar, an ihrer Unterseite mit einer konischen Erweiterung versehen sein.For better sealing, the diameter of the sealing part 113 on the lower part 1 is 0.01 to 0.25 mm larger than the diameter of the upper opening 206 on the upper part 2. When the closure is assembled and when it is screwed on as far as it will go, the sealing part can 113 can thus only be introduced into the upper opening 206 against the effect of the elasticity of the material of the plastic. In order to make this possible, the material of the plastic is chosen accordingly with regard to its elasticity. In order to facilitate the insertion of the sealing part 113 into the upper opening 206, this can, as can be seen in FIG. 4, be provided with a conical widening on its underside.

Zur leichteren Verbindung des Verschlusses mit einer externen Vorrichtung wie Schlauch, Nadel usw. ist eine äussere Wandung 217 des Ventilrohrs 209 als Normkonus, beispielsweise als Luer-Konus ausgebildet.To make it easier to connect the closure to an external device such as a hose, needle, etc., an outer wall 217 of the valve tube 209 is designed as a standard cone, for example as a Luer cone.

Am Unterteil 1 ragt der axial angebrachte Zylinderabschnitt 110 mit radialem Abstand in den Schraubzylinder 120 hinein, derart, dass zwischen dem Schraubzylinder 120 und dem Zylinderabschnitt 110 eine Einwölbung 122 mit einer im wesentlichen zylindrischen Innenfläche 123 gebildet wird. An dieser zylindrischen Innenfläche 123 der Einwölbung 122 ist eine Rippe 115 angeordnet, die parallel zur Achse A liegt, radial nach innen gerichtet ist und sich im Abstand zur Achse A befindet. Aus Gründen der Herstellung und der Festigkeit sowie zur Erleichterung der Montage ist die Rippe 115 als ebene Wandung ausgebildet, welche die Einwölbung 122 unterteilt, indem sie den Zylinderabschnitt 110 mit der zylindrischen Innenfläche 123 verbindet.On the lower part 1, the axially attached cylinder section 110 projects into the screw cylinder 120 at a radial distance, such that an arch 122 with an essentially cylindrical inner surface 123 is formed between the screw cylinder 120 and the cylinder section 110. On this cylindrical inner surface 123 of the arch 122, a rib 115 is arranged which is parallel to the axis A, is directed radially inward and is at a distance from the axis A. For reasons of manufacture and strength, as well as to facilitate assembly, the rib 115 is designed as a flat wall which divides the arch 122 by connecting the cylinder section 110 to the cylindrical inner surface 123.

Am Oberteil 2 ist etwa in Verlängerung des Zylinderabschnitts 210 an dessen unterem Ende 224 eine nach unten gerichtete Schikane 215 angeordnet, die parallel zur Achse A liegt, sich im Abstand zur Achse A befindet und im wesentlichen als Kombination eines vollen Sektor und der übrigbleibenden Lücke einer zylindrischen Mantelfläche ausgebildet ist. Aus Gründen der Herstellung und der Festigkeit sowie zur Erleichterung der Montage ist die Schikane 215 an ihrem unteren Ende in Nähe der beim Zuschrauben vorderen Kante mit einer nach unten gerichteten Spitze 225 und an ihrem oberen Ende in Nähe der beim Zuschrauben hinteren Kante mit einer schwanzförmigen Erweiterung versehen.On the upper part 2, approximately in extension of the cylinder section 210, a downward chicane 215 is arranged at its lower end 224, which is parallel to the axis A, is at a distance from the axis A and essentially as a combination of a full sector and the remaining gap one cylindrical outer surface is formed. For reasons of manufacture and strength, as well as for ease During assembly, the baffle 215 is provided with a downward-pointing tip 225 at its lower end near the front edge when it is screwed on and with a tail-shaped extension at its upper end near the rear edge when it is screwed on.

Im montierten Zustand des Verschlusses wirken die Rippe 115 und die Schikane 215 zusammen, um durch Anschlag aufeinander die Verdrehung des Oberteils 2 relativ zum Unterteil 1 zu begrenzen. Der von Rippe 115 und Schikane 215 erlaubte Verdrehwinkel des Oberteils 2 relativ zum Unterteil 1 ist grundsätzlich kleiner als eine volle Umdrehung, im dargestellten Ausbildungsbeispiel sind die Breite der Rippe 115 und die Bogenlänge der Schikane 215 so gewählt, dass der zugelassene Verdrehwinkel etwa eine Dreivierteldrehung betragt.In the assembled state of the closure, the rib 115 and the chicane 215 cooperate in order to limit the rotation of the upper part 2 relative to the lower part 1 by abutting one another. The angle of rotation of the upper part 2 relative to the lower part 1, which is permitted by the rib 115 and the chicane 215, is in principle smaller than a full rotation, in the illustrated embodiment the width of the rib 115 and the arc length of the chicane 215 are selected such that the permitted angle of rotation is approximately a three-quarter turn .

Bei diesem zugelassenen Verdrehwinkel ist der entsprechende Hub des Oberteils 2 relativ zum Unterteil 1 in der in Fig. 1 bis 8 dargestellten Ausbildung so bemessen, dass der Abdichtungsteil 113, wenn der Verschluss montiert und voll zugeschraubt ist, die obere Oeffnung 206 gerade stopft, derart, dass sich das obere Ende 114 des Abdichtungsteils 113 in axialer Richtung etwa bündig mit der oberen Oeffnung 206 befindet.At this approved angle of rotation, the corresponding stroke of the upper part 2 relative to the lower part 1 in the configuration shown in FIGS. 1 to 8 is dimensioned such that the sealing part 113, when the closure is assembled and fully screwed, just stuffs the upper opening 206, in such a way that the upper end 114 of the sealing part 113 is approximately flush with the upper opening 206 in the axial direction.

In der in Fig. 9 dargestellten Ausbildung ist der Hub des Oberteils 2 relativ zum Unterteil 1 länger als die Summe der Dicke des Oberteils 2 (an dessen oberem Ende 204 im Bereich seiner oberen Oeffnung 206) und der Vorsprunghöhe des Abdichtungsteils 113 (über das obere Ende 204 des Oberteils 2 im montierten Zustand des Verschlusses und wenn dieser voll zugeschraubt ist). Dies gewährleistet, dass der Abdichtungsteil 113 auch bei dem von Rippe 115 und Schikane 215 begrenzten Verdrehwinkel die obere Oeffnung 206 voll durchquert, wenn der Verschluss montiert und voll zugeschraubt ist, derart, dass sich das obere Ende 114 des Abdichtungsteils 113 in axialer Richtung über der oberen Oeffnung 206 befindet.In the embodiment shown in FIG. 9, the stroke of the upper part 2 relative to the lower part 1 is longer than the sum of the thickness of the upper part 2 (at its upper end 204 in the region of its upper opening 206) and the projection height of the sealing part 113 (above the upper one End 204 of the upper part 2 in the assembled state of the closure and when it is fully screwed). This ensures that the sealing part 113, even at the twist angle limited by the rib 115 and the chicane 215, fully crosses the upper opening 206 when the closure is mounted and fully screwed in such that the upper end 114 of the sealing part 113 is axially above the top opening 206 is located.

Andererseits ist die Länge des Abdichtungsteils 113 unter Berücksichtigung des Hubs des Oberteils 2 relativ zum Unterteil 1 bei diesem zugelassenen Verdrehwinkel stets so bemessen, dass im montierten Zustand des Verschlusses und wenn dieser bis zum Anschlag aufgeschraubt ist, das obere Ende 114 des Abdichtungsteils 113 aus der oberen Oeffnung 206 des Oberteils 2 und aus dem grössten Teil des Ventilrohrs 209 zurückgezogen ist. Dann sind die obere Oeffnung 206 sowie grösstenteils das Ventilrohr 209 für den Durchfluss der im Behälter enthaltenen fliessfähigen Substanz freigegeben.On the other hand, considering the stroke of the upper part 2, the length of the sealing part 113 is relative to the With this approved angle of rotation, lower part 1 should always be dimensioned such that when the closure is assembled and when it is screwed on as far as it will go, the upper end 114 of the sealing part 113 is withdrawn from the upper opening 206 of the upper part 2 and most of the valve tube 209 . Then the upper opening 206 and for the most part the valve tube 209 are released for the flow of the flowable substance contained in the container.

Am Unterteil 1 ist noch ein Nocken 118 vorgesehen, der an der zylindrischen Innenfläche 123 der Einwölbung 122 im Abstand zur Achse A sowie parallel dazu angeordnet und radial nach innen gerichtet ist. Die Länge des Nockens 118 in Richtung parallel zur Achse A ist so bemessen, dass der Nocken 118 mit der Schikane 215 zusammenwirkt, wenn der Verschluss montiert ist und sich in einer Position zwischen voll zugeschraubt und höchstens einviertel aufgeschraubt befindet. Die Zusammenwirkung des Nockens 118 mit der Schikane 215 besteht in einer Reibung, die gegen die Wirkung der Elastizität des Materials überwindbar ist und eine Verdrehung des Oberteils 2 relativ zum Unterteil 1 hindert.On the lower part 1 there is also a cam 118 which is arranged on the cylindrical inner surface 123 of the arch 122 at a distance from the axis A and parallel to it and is directed radially inwards. The length of the cam 118 in the direction parallel to the axis A is dimensioned such that the cam 118 interacts with the baffle 215 when the closure is installed and is in a position between fully screwed on and at most a quarter screwed on. The interaction of the cam 118 with the baffle 215 consists in a friction which can be overcome against the effect of the elasticity of the material and prevents the upper part 2 from rotating relative to the lower part 1.

Die Fig. 7 und 8 zeigen den gesamten erfindungsgemässen Verschluss in axialem Längsschnitt dar.7 and 8 show the entire closure according to the invention in an axial longitudinal section.

Fig. 7 und 9 zeigen den Verschluss in geschlossenem Zustand, wobei Fig. 9 auch einen Behälter 127 zeigt. Mittels des Aussengewindes 101 und des Innengewindes 201 als Führung und Befestigung ist der Oberteil 2 ganz auf den Unterteil 1 hinuntergeschraubt. Der Behälter 127 wird mit seinem Kragen 128 durch das aus Klemmrippen 102 und Arretierrippen 102′ bestehende Befestigungsorgan 102, 102′ im Unterteil 1 des Verschlusses gehalten. Die Schikane 215 ist an der Rippe 115 im Anschlag. Besonders sichtbar ist, wie die obere Oeffnung 206 vom Abdichtungsteil 113 durchdrungen und somit vollständig verschlossen ist, der Ventilstift 109 voll vom Ventilrohr 209 umschlossen ist und diesen weitgehend füllt, und das obere Ende 114 des Abdichtungsteils 113 in Fig. 7 zur oberen Oeffnung 206 bündig ist und in Fig. 9 aus der oberen Oeffnung 206 hervorragt. Der Dosierraum zwischen dem Unterteil 1 und dem Oberteil 2 reicht in axialer Richtung von der Abdichtung durch den Wulst 111 zwischen dem Zylinderabschnitten 110 und 210 bis zur Abdichtung zwischen dem Abdichtungsteil 113 und der oberen Oeffnung 206 gegen die Wirkung der Elastizität des Materials. Dieser Dosierraum ist gegenüber der Aussenluft vollständig abgedichtet und von sehr kleinem Volumen. Er enthält sowohl vor dem ersten Gebrauch der Verschlusses als auch danach fliessfähige Substanz oder, beispielsweise von der Herstellung des Verschlusses her, gegebenenfalls ein Gas aus dem Behälter 127, wobei dieses Gas ein Schutzgas sein kann, das bei der Füllung des Behälter 127 miteingefüllt worden ist.FIGS. 7 and 9 show the closure in the closed state, FIG. 9 also showing a container 127. The upper part 2 is screwed completely onto the lower part 1 by means of the external thread 101 and the internal thread 201 as a guide and fastening. The container 127 is held with its collar 128 by the clamping ribs 102 and locking ribs 102 'existing fastening member 102, 102' in the lower part 1 of the closure. The chicane 215 stops at the rib 115. It is particularly visible how the upper opening 206 is penetrated by the sealing part 113 and is therefore completely closed, the valve pin 109 is completely enclosed by the valve tube 209 and largely fills it, and the upper end 114 of the sealing part 113 in FIG. 7 is flush with the upper opening 206 and from the top opening in FIG. 9 206 protrudes. The dosing space between the lower part 1 and the upper part 2 extends in the axial direction from the sealing by the bead 111 between the cylinder sections 110 and 210 to the sealing between the sealing part 113 and the upper opening 206 against the effect of the elasticity of the material. This dosing room is completely sealed from the outside air and has a very small volume. It contains flowable substance both before the first use of the closure and afterwards or, for example, from the manufacture of the closure, possibly a gas from the container 127, which gas can be a protective gas which was also filled in when the container 127 was filled .

Fig. 8 zeigt den Verschluss in geöffnetem Zustand. Mittels des Aussengewindes 101 und des Innengewindes 201 als Führung und Befestigung ist der Oberteil 2 soweit wie möglich ganz auf dem Unterteil 1 hinaufgeschraubt. Der Behälter 127 wird mit seinem Kragen 128 durch das aus Klemmrippen 102 und Arretierrippen 102′ bestehende Befestigungsorgan 102, 102′ im Unterteil 1 des Verschlusses gehalten. Die Schikane 215 ist nicht sichtbar, weil sie in Betrachtungsrichtung über der Zeichnung, d.h. vor der Rippe 115 liegt. Die Schikane 215 ist wiederum an der Rippe 115 im Anschlag, in der Situation der Fig. 8 jedoch auf der anderen Seite der Rippe 115 und mit ihrer anderen Kante als in der Situation der Fig. 7. Dieser Anschlag verhindert ein vollständiges Abschrauben, Abheben und Entfernen des Oberteils 2 vom Unterteil 1. Besonders sichtbar ist, wie die obere Oeffnung 206 vollständig offen und vom Abdichtungsteil 113 freigegeben, das obere Ende 114 des Abdichtungsteils 113 aus der oberen Oeffnung 206 und der Ventilstift 109 aus dem Ventilrohr 209 zurückgezogen ist. Der Dosierraum zwischen dem Unterteil 1 und dem Oberteil 2 kann, durch die obere Oeffnung 106 des Unterteils 1 hindurch, von der fliessfähigen Substanz aus dem Behälter 127 frei durchflossen werden. Die Aussenluft ist nur an der oberen Oeffnung 206 mit der Substanz aus dem Behälter 127 in Kontakt und kommt mit der Substanz im Behälter 127 solange nicht in Kontakt, als im Behälter 127 Ueberdruck herrscht, d.h. solange der Behälter 127, wenn er steif ist, unter Gasdruck oder Kolbenkraft steht, und wenn er flexibel ist, von Hand gedrückt wird.8 shows the closure in the open state. By means of the external thread 101 and the internal thread 201 as a guide and fastening, the upper part 2 is screwed as far as possible onto the lower part 1. The container 127 is held with its collar 128 by the clamping ribs 102 and locking ribs 102 'existing fastening member 102, 102' in the lower part 1 of the closure. The chicane 215 is not visible because it lies above the drawing, ie in front of the rib 115, in the viewing direction. The baffle 215 is in turn at the rib 115 in the stop, in the situation of FIG. 8, however, on the other side of the rib 115 and with its other edge than in the situation of FIG. 7. This stop prevents complete unscrewing, lifting and Removal of the upper part 2 from the lower part 1. It is particularly visible how the upper opening 206 is completely open and released by the sealing part 113, the upper end 114 of the sealing part 113 is withdrawn from the upper opening 206 and the valve pin 109 is withdrawn from the valve tube 209. The flowable substance from the container 127 can flow freely through the upper opening 106 of the lower part 1 into the dosing space between the lower part 1 and the upper part 2. The outside air is only in contact with the substance from the container 127 at the upper opening 206 and does not come into contact with the substance in container 127 as long as there is overpressure in container 127, ie as long as container 127, when it is stiff, is under gas pressure or piston force and, if it is flexible, is pressed by hand.

In einer Zwischenlage zwischen den Situationen der Fig. 7 und 8 ist die obere Oeffnung 206 vom Abdichtungsteil 113 grösstenteils bis vollständig freigegeben, der Ventilstift 109 ist jedoch nur teilweise vom Ventilrohr 209 umschlossen und füllt diesen teilweise, in Abhängigkeit vom Verdrehungswinkel vom Oberteil 2 zum Unterteil 1. Eben diese Abhängigkeit ermöglicht eine feine, stetig einstellbare Dosierung des Durchflusses der fliessfähigen Substanz aus dem Behälter 127 durch den erfindungsgemässen Verschluss. Dabei ergibt die Zusammenwirkung des Nockens 118 mit der Schikane 215 eine Reibung, die eine unbeabsichtigte Verdrehung des Oberteils 2 relativ zum Unterteil 1 hindert und eine absichtliche Verdrehung bremst, letzeres um zu vermeiden, dass im Behälter enthaltene Substanz oder Gase plötzlich entweichen und die Bedienungsperson gefährden.In an intermediate position between the situations of FIGS. 7 and 8, the upper opening 206 is largely or completely clear from the sealing part 113, but the valve pin 109 is only partially enclosed by the valve tube 209 and partially fills it, depending on the angle of rotation from the upper part 2 to the lower part 1. It is precisely this dependency that enables a fine, continuously adjustable metering of the flow of the flowable substance from the container 127 through the closure according to the invention. The interaction of the cam 118 with the baffle 215 results in friction which prevents unintentional rotation of the upper part 2 relative to the lower part 1 and slows down an intentional rotation, the latter in order to prevent the substance or gases contained in the container from suddenly escaping and endangering the operator .

Claims (13)

  1. Two-part plastics closure for a container containing a flowable substance, having a lower part (1), which can be mounted on the container (127) and is substantially rotationally symmetrical about an axis (A) of the closure, which is provided in its lower region with an external thread (101) and an element (102, 102′) for fastening to the container (127) and has one opening (105, 106) at each of a lower (103) and upper (104) end and an unperforated lateral surface (107) between these openings, an upper part (2), which is substantially rotationally symmetrical about the axis (A) of the closure, which is provided in its lower region with an internal thread (201) which fits on the external thread (101) and has an opening (205, 206) at each of a lower (203) and upper (204) end and an unperforated lateral surface (207) between these openings, an axially aligned cylindrical section (110, 210) on each of the lower part (1) and upper part (2), a valve pin (109) disposed on the lower part (1) so as to be directed axially upwards and held by means of connecting webs (108) on the inner cylindrical section (110), a valve tube (209), which is axially disposed on the upper part (2) and held by means of an intermediate part (208) on the outer cylindrical section (210), a convex seal (111), which is moulded substantially on an upper end (112) of the inner cylindrical section (110) so as to be directed radially outwards, and faces the outer cylindrical section (210), in which arrangement, with the closure in the assembled state, the internal thread (201) is effectively connected to the external thread (101), so that the valve pin (109) can be axially displaced relative to the valve tube (209) by rotating the upper part (2) relative to the lower part (1), the two cylindrical sections (110, 210) are effectively connected together via the convex seal (110) and enclose one another coaxially over at least a part of their length, so that the two cylindrical sections (110, 210) can be axially displaced with respect to each other with constant mutual sealing by rotating the upper part (2) relative to the lower part (1), the inner cylindrical section (110) is disposed in the central region of the lower part (1) between the external thread (101) and at least a partial region of the valve pin (109), the outer cylindrical section (210) is disposed in the central region of the upper part (2) between the internal thread (201) and at least a partial area of the valve tube (209); when the closure is completely screwed down, the upper ends (112, 212) of the two cylindrical sections (110, 210) are opposite each other substantially at the same height and the valve pin (109) is surrounded by the valve tube (209) in a coaxial manner substantially over the full length of the valve tube (209), and, when the closure is completely unscrewed, the valve pin (109) is disposed substantially outside the valve tube (209), characterised in that the aforementioned intermediate part (208), by means of which the valve tube (209) is supported on the upper part (2), is substantially conical in form, the valve tube (209) is held completely above the outer cylindrical section (210) by means of the substantially conical intermediate part (208), the valve pin (109) is held by means of the connecting webs (108) completely above the internal cylindrical section (110), a sealing part (113) is provided, which is axially moulded on the upper end of the valve pin (109) as the extension thereof, in which arrangement, with the closure in the assembled state, the inner cylindrical section (110) is disposed in the central region of the lower part (1) between the external thread (101) and the valve pin (109), not overlapping this in an axial direction, the outer cylindrical section (210) is disposed in the central region of the upper part (2) between the internal thread (201) and the valve tube (209), not overlapping this in an axial direction, and, when the closure is completely screwed down, the sealing part (113) is introduced into the upper opening (206) of the upper part (2) and plugs this upper opening.
  2. Closure according to Claim 1, characterised in that the valve pin (109) and the valve tube (209) are both frustoconical in shape and, considered with the closure in the assembled state, are designed so as to taper towards the upper opening (206) of the upper part (2), the valve pin (109) having a more acute conical angle than the valve tube (209), and in that, with the closure in the assembled state and when it is fully screwed down, the valve pin (109) has a clearance from the valve tube (209).
  3. Closure according to Claim 1, characterised in that the sealing part (113) is longer than a predetermined thickness of the upper part (2) at the upper end (204) thereof in the region of its upper opening (206), and, the closure in the assembled state with and when it is fully screwed down, an upper end (114) of the sealing part (113) projects axially above the upper end (204) of the upper part (2) by a predetermined projection height.
  4. Closure according to Claim 1, characterised by a rib (115) directed radially inwards on the lower part (1), which rib is disposed parallel to the axis (A) and at a distance therefrom, and a baffle (215) directed downwards on the upper part (2), which baffle is disposed parallel to the axis (A) and at a distance therefrom, the rib (115) and the baffle (215) cooperating when the closure is in the assembled state to limit by striking against each other the possible twisting of the upper part (2) relative to the lower part (1) to a certain angle of twist, which is smaller than a complete rotation.
  5. Closure according to Claim 4, characterised in that the lower part (1) is provided with a cam (118), which is parallel to the axis (A) and disposed at a distance therefrom and is directed radially inwards, which, when the closure is in the assembled state and is in a position between completely screwed down and at most a quarter unscrewed, cooperates with the baffle (215) to prevent in a manner that can be overcome a twisting of the upper part (2) relative to the lower part (1) against the effect of the elasticity of the material.
  6. Closure according to Claim 1, characterised in that, the closure in the assembled state and when it is unscrewed as far as the stop, the diameter of the sealing part (113) is greater by about 0.01 to 0.025 mm than the diameter of the upper opening (206), and the material of the plastic is chosen as regards its elasticity such that the sealing part (113) can be introduced into the upper opening (206) against the effect of the elasticity of the material.
  7. Closure according to Claim 1, characterised by at least one marking (116) disposed externally on the lower part (1) substantially at the lower end (103) thereof and at least one marking (216, 216′) disposed externally on the upper part (2) at least in the vicinity of the lower end (203) thereof.
  8. Closure according to Claim 7, characterised in that at least one marking (116, 216′) is designed as an embossed pattern.
  9. Closure according to Claim 7, characterised in that at least one marking (216) is designed as an element projecting radially outwards.
  10. Closure according to Claim 4 and 7, characterised in that, with the closure in the assembled state and when it is screwed down as far as the stop, at least one of each of the markings (116, 216, 216′) disposed on the lower part (1) and on the upper part (2), respectively, are opposite to each other.
  11. Closure according to Claim 1, characterised in that the convex seal (111) is designed as a bead moulded onto the inner cylindrical section (110).
  12. Closure according to Claim 1, characterised in that an external wall (217) of the valve tube (209) is designed as a standard cone.
  13. Closure according to Claim 12, characterised in that the standard cone is a Luer's cone.
EP90112525A 1989-08-11 1990-06-30 Two part plastic closure for a fluids container Expired - Lifetime EP0412285B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2952/89 1989-08-11
CH2952/89A CH679573A5 (en) 1989-08-11 1989-08-11

Publications (2)

Publication Number Publication Date
EP0412285A1 EP0412285A1 (en) 1991-02-13
EP0412285B1 true EP0412285B1 (en) 1993-03-03

Family

ID=4245338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112525A Expired - Lifetime EP0412285B1 (en) 1989-08-11 1990-06-30 Two part plastic closure for a fluids container

Country Status (12)

Country Link
US (2) US5284277A (en)
EP (1) EP0412285B1 (en)
JP (1) JP2925264B2 (en)
KR (1) KR0155372B1 (en)
AT (1) ATE86208T1 (en)
CA (1) CA2022986C (en)
CH (1) CH679573A5 (en)
DE (1) DE59000960D1 (en)
DK (1) DK0412285T3 (en)
ES (1) ES2039104T3 (en)
PL (1) PL164658B1 (en)
RU (1) RU1836264C (en)

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US5680965A (en) * 1996-01-29 1997-10-28 Beck; Matthew R. Tamper evident container closure
US5743444A (en) * 1996-12-06 1998-04-28 Creative Packaging Corp. Twist dispensing closure
IT1292353B1 (en) * 1997-05-19 1999-01-29 Prodotti Ind Srl CLOSING CAP FOR BOTTLES AND SIMILAR.
ES2203915T3 (en) * 1997-08-26 2004-04-16 Kisling Ag PLASTIC BOTTLE.
US6543650B1 (en) * 2001-01-25 2003-04-08 Rexam Medical Packaging Inc. Double shell dispenser
US7210575B2 (en) * 2002-09-26 2007-05-01 Boehringer Ingelheim International Gmbh Two-component packaging unit
ITRM20040142A1 (en) * 2004-03-19 2004-06-19 Emsar Spa ADJUSTABLE AND SEALABLE JET NEBULIZER FOR ELASTICALLY DEFORMABLE BOTTLES FOR CRUSHING.
EA016006B1 (en) * 2007-08-02 2012-01-30 Кислинг Аг Closure for the metered dispensing of adhesive from a container
GB0718558D0 (en) * 2007-09-24 2007-10-31 Chemence Ltd A two-part closure cap for a container
DE102008007306A1 (en) * 2008-02-02 2009-08-06 Fischbach Kg Kunststoff-Technik Pressing device for plastic masses
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KR20120041534A (en) * 2010-10-21 2012-05-02 (주)연우 Tube vessel
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GB2487206B (en) * 2011-01-12 2015-12-16 White Horse Innovations Ltd Nozzle for fluid container
CN103781722B (en) * 2011-07-15 2015-11-25 Mwv斯莱特斯维尔有限责任公司 Postpone flow baffles dispensing closure member
WO2018191649A1 (en) * 2017-04-14 2018-10-18 Sanford L.P. Anti-clog cap and associated containers and methods
CN107235223A (en) * 2017-06-29 2017-10-10 天津诺塑料制品有限公司 A kind of thin mouth container for being easy to feed
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Also Published As

Publication number Publication date
US5310097A (en) 1994-05-10
KR910004439A (en) 1991-03-28
US5284277A (en) 1994-02-08
CA2022986A1 (en) 1991-02-12
JP2925264B2 (en) 1999-07-28
EP0412285A1 (en) 1991-02-13
CH679573A5 (en) 1992-03-13
CA2022986C (en) 2002-10-08
PL164658B1 (en) 1994-08-31
ATE86208T1 (en) 1993-03-15
DE59000960D1 (en) 1993-04-08
PL286439A1 (en) 1991-04-22
KR0155372B1 (en) 1999-02-18
ES2039104T3 (en) 1993-08-16
DK0412285T3 (en) 1993-06-21
RU1836264C (en) 1993-08-23
JPH0385263A (en) 1991-04-10

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