EP3807161A1 - Dose mit schnappverschluss - Google Patents
Dose mit schnappverschlussInfo
- Publication number
- EP3807161A1 EP3807161A1 EP19746430.8A EP19746430A EP3807161A1 EP 3807161 A1 EP3807161 A1 EP 3807161A1 EP 19746430 A EP19746430 A EP 19746430A EP 3807161 A1 EP3807161 A1 EP 3807161A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- edge section
- wall
- closure system
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
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- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
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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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
-
- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
- B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
- B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00064—Shape of the outer periphery
- B65D2543/00074—Shape of the outer periphery curved
- B65D2543/00092—Shape of the outer periphery curved circular
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00296—Plastic
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00314—Combination, e.g. laminates, several different materials
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00342—Central part of the lid
- B65D2543/00351—Dome-like
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00342—Central part of the lid
- B65D2543/0037—Flexible or deformable
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
- B65D2543/00527—NO contact
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
- B65D2543/00546—NO contact
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00833—Integral tabs, tongues, handles or similar
- B65D2543/00842—Integral tabs, tongues, handles or similar outside of the lid
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00888—Means for facilitating removing of the closure by applying lever forces
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00888—Means for facilitating removing of the closure by applying lever forces
- B65D2543/00898—Means for facilitating removing of the closure by applying lever forces by means of a coin or other tool in recesses or similar on container or lid
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00925—Means for facilitating removing of the closure by applying inwardly directed pressure at two horizontally opposed points
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00944—Located only on the container, e.g. recesses
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00953—Sealing means
- B65D2543/0099—Integral supplemental sealing lips
Definitions
- Snap locks are characterized in that they can snap between an open and a closed state in a bistable manner. They generally consist of a disk-shaped end wall, which can be deformed in a bistable manner between a concave first and a convex second state, and an annular edge section thereof
- the outer circumference is reduced when the end wall changes from the first to the second state.
- Snap fasteners which are sold by the Hoffmann Neopac company as merchandising products under the Vogel-Klack ® or Klipp-Klapp ® brands, can also be made of plastic.
- the decisive factor for the functioning of the snap mechanism is the transmission of the bistable deformation of the end wall to the adjacent annular edge section.
- the edge section itself must be sufficiently stretchable in order to ensure that its outer circumference widens in the first bistable state of the end wall which is curved in the plug-on direction. According to DE 10 2015 103 036 B4, this is achieved, for example, by the fact that folds are formed on the edge section which unfold in the first state and thus allow the outer circumference to be enlarged. Then the entire cover can be made from one be made of a single plastic material with a homogeneous density or ductility. However, the edge section preferably obtains the necessary extensibility by virtue of the fact that at least one expansion section in the edge section of the
- Cover is made of a softer material component than the rest of the edge section (see WO 2017/076398 A1).
- the stretching section expands elastically under tension and allows the edge area to expand in concave end wall curvature, while the base material of the cover is otherwise stiff enough to cover the angle in the transition area
- the expansion section is preferably produced in one piece together with the rest of the cover in a multi-component injection molding process.
- a second material component is then injected for the expansion section, which is softer and / or more elastic than the first material component used for the remaining cover.
- the cover in this transition area can furthermore preferably have a higher material thickness of the harder (basic) material component than in the main area of the end wall or injection molded from an even harder third material component become. This leads to the particular advantage that the cover as a whole has a constant material thickness. A homogeneous thickness is not only visually appealing, it also reduces the number of steps and edges in which dirt can collect.
- a configuration is particularly preferred in which a locking ring made of the softer second material component is injection molded onto the entire inner and / or outer circumference of the edge section. This can sealingly engage in a groove or a step in the side wall of the opening to be closed, so that even a sealing closure of the opening is possible.
- Closure system as a whole are undesirably restricted. On the other hand, it would be desirable to have the minimum necessary for the snap action
- Snap states would be triggered more exclusively by a pulling force, because then a grip element (to be operated with both hands) would not necessarily have to be provided on the cover.
- the object of the present invention is to provide a closure system with a three-dimensional structure
- bistable snap between two states in which the possibilities to initiate the snap operation are expanded for the user, and preferably the minimum effort required for triggering is reduced.
- a closure system in which both bistable states can be triggered by manual pressing is particularly desirable, so that both snap-in processes can be triggered without a grip element and as a rule with one hand.
- the three-dimensional structure in particular a container or a tube end that is open at least on one side, is configured in such a way that a force acting on the closure system from the outside at at least one predefined point on the edge portion of the cover in this manner is directed that a snap of the cover is triggered from one bistable state to the other.
- the opening wall of the three-dimensional structure is preferably so flexible, at least at the predefined location, that it transmits a force acting on the opening wall at least on one side and preferably on both sides to the edge portion of the cover by elastic deformation.
- the lid can lie completely within the opening to be closed, without being on the end wall of the lid for the user
- Handle element for triggering the snap action in the open position would have to be provided. This is particularly preferably contrary to
- the geometrical design according to the invention of the outermost end section of the opening wall against the push-on direction makes it possible for the cap to contact this end section with a region of the end wall which is offset somewhat from the edge section in the direction of the cap center.
- the cap can be brought into its closed position not only by a force acting transversely to the plug-on direction on the edge section, but also by a force exerted in the plug-on direction, provided that this force is exerted on a pressure point which is located radially further out than the contact point of the Opening wall with the front wall.
- the closure element of the opening to be closed is generally referred to as a cover. If the clamp fastening of the cover acts on the outside of the opening wall, the cover is referred to as a cap; however, if the cover clamps against the inside of the opening wall, it is referred to as the cover.
- FIG. 1 a shows a side view, partially in section, of a closure cap according to a first exemplary embodiment of the invention
- Fig. 1 b is a plan view of the cap of Fig. 1 a;
- Fig. 1 c is an enlarged detail view in section A-A in Fig. 1 a;
- Fig. 1 d is an enlarged view of a section X of Fig. 1 a;
- Fig. 1 e is an enlarged detail view in a section C-C in Fig 1 c;
- FIG. 1f shows an enlarged detail view in a section B-B in FIG. 1c, in which the principle of closure of a container with the cap is shown at the same time;
- Fig. 2a is a cross-sectional view of a closure system of the
- FIG. 2b shows a cross-sectional view of the closure system of FIG. 2a in the closed position
- FIG. 2c shows an enlarged section of FIG. 2a in a first variant of the first exemplary embodiment in the open position
- FIG. 2d shows the enlarged section of FIG. 2a in a second variant of the first exemplary embodiment in the open position
- FIG. 2e shows the enlarged detail of FIG. 2a in a third variant of the first exemplary embodiment in the open position
- FIG. 3a shows a cross-sectional view of a closure system of FIG
- FIG. 3a shows a cross-sectional view of the closure system of FIG. 3a in the closed position
- FIG. 3c shows an enlarged detail from FIG. 3b
- Fig. 3d shows the enlarged section of Fig. 3c in a first variant of the second embodiment in the closed position
- FIG. 3e shows the enlarged section of FIG. 3c in a second variant of the second exemplary embodiment in the closed position
- FIG. 3f shows the enlarged section of FIG. 3c in a third variant of the second exemplary embodiment in the closed position.
- the cover according to the invention is designed as a cap 20, which is a
- FIGS. 1 a to 1f all show the cap 20 in its convex, outward (i.e. against the
- FIG. 1f additionally shows how in this position it is possible to snap into the opening wall 12a to be closed, but this will be explained in more detail later with reference to FIGS. 2a to 2e.
- FIGS. 1 a-f has an end wall 21 of essentially circular basic shape, on the circumferential edge of which an annular edge section 22 is formed.
- FIG. 1 a shows a side view partially shown in section. In the left half of the figure, the cap 20 can be seen from the side, while in the right half it is cut open on the inside, so that the rear inside of the cap 20 can be seen.
- the uncut soft component second material component
- the cut soft component is shown cross-hatched
- the cut flart component first material component
- the end wall 21 snaps down into its concave (i.e. in
- the outer circumference of the edge section 22 increases by the angle m, which the end wall 21 and the edge section 22 enclose in their transition region, in the two bistable ones
- the cap material should have sufficient rigidity. This is achieved according to the invention in that the transition between end wall 21 and edge section 22, at least in sections, but preferably over the entire circumference, has a higher material thickness than the central region of end wall 21. The material thickens, as shown in FIGS. 1e and 1f , outwards, ie against the
- the thickened material can also protrude inwards and lead to a correspondingly contoured wall inside the lid.
- the expansion sections 24 start at the transition area between the end wall 21 and the edge section 22 and widen towards the radial outer edge.
- the softer material of the stretching sections 24 ensures that the edge section 22 is in the concave, i.e. open snap position of the cap 20 can enlarge in its outer circumference.
- the expansion sections 24 would then no longer have the constant width shown in FIGS. 1 a and 1 d, but would widen radially outward.
- the edge section 22 ends both in its expansion sections 24 and in its intermediate sections 23 in an inner circumferential locking ring 29, which is also formed from a softer material component, preferably the same as the stretching sections 24.
- This internal circumferential locking ring 29 gives the thin-walled cap 20 additional dimensional stability, but is also sufficiently elastic to increase the outer circumference in the in the Fig. 2a convex fold position shown. Because of its softer material properties, the locking ring 29 can take over the function of a sealing ring.
- the locking ring 29 is formed on a lip section 23a, 24a of the edge section 22 which projects radially inward by 90 °. This is because the cap 20 is to encompass the opening 11a to be closed from the outside, as will be explained in more detail in FIGS. 1f and in particular 2a-e.
- the lip section 24a adjoining the expansion section 24 is made of the softer second material component, while the lip section 23a adjoining the intermediate section 23 is made of the harder first
- the lip sections 23a and 24a can also be completely formed from the softer second material component. Then the entire radially inward part of the edge section 22 would belong to the locking ring 29 or the lip section would be omitted.
- the above-mentioned multi-component injection molding from one or more thermoplastics is particularly suitable as the production method for the cap 20.
- a first (base) component can be injection molded for the end wall 21 and the intermediate sections 23, while the expansion sections 24, like the locking ring 29, are injection molded directly from a softer second component in a single manufacturing process.
- the optional third (particularly hard) material component for the transition area between the front wall and the edge section can also be injection molded directly in a single multi-component injection molding.
- thermoplastic elastomers TPE
- thermoplastic urethane TPU
- Preferred materials for the second component are: polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS) and polystyrene (PS).
- Preferred materials for the third component are: glass fiber reinforced polyamide (PA) or other glass fiber reinforced plastics.
- PA glass fiber reinforced polyamide
- a blank previously made separately can be overmolded.
- a cap made of sheet metal or a light metal (e.g. aluminum) which essentially has the shape of a conventional click-clack can cap with the spreading metal crenellations, is extrusion-coated around the edge with the softer (second) plastic component. In this way, a cover with a substantially improved seal against the escape of liquids or gases from the can to be sealed is obtained.
- FIGS. 2a-e show the functional principle of the cap 20 according to the first exemplary embodiment in a closure system according to the invention comprising the container 10a and the cap 20.
- the opening 11a to be closed has an annular groove 13a on the outside in the wall section 12a shown, on the other side thereof a paragraph 15a is formed at the bottom, but this is not necessary and can also be omitted.
- the wall section 12a continues in an overhang 14a, which has essentially the same height as the edge section 22 of the cap 20.
- Figure 2a shows the cap 20 in its open, concave position, i.e. with a curved end wall 21. It has a correspondingly enlarged inner diameter of the edge section 22. This inner diameter is larger than the outer diameter of the outer groove 13a, so that the cap 20 can be removed from the opening 11a in the open state in FIG. 2a.
- the end wall 21 has a convex curvature, that is to say it is curved upward in the opposite direction to the plug-on direction.
- the edge section 22 with the inwardly projecting locking ring 29 then only has an inner diameter which is smaller than the outer diameter of the groove 13a.
- the cap 20 is firmly engaged with the opening wall 12a to be closed and only snaps back into its first bistable state when a force F acting in the plug-on direction is exerted, which is shown in FIG. 2a. Because of the elastic material properties of the locking ring 29, this also acts as a sealing ring to prevent gases or liquids from escaping from the opening 11 a.
- the end section 16 of the wall region 12a is beveled, that is to say the outer circumference of the opening 11a narrows in this end section 16, while the inside diameter of the opening 11a remains constant. This creates a contact point A1 between end wall 21 and end section 16, which is at a distance a1 from
- Transitional area between the end wall 21 and edge portion 22 is offset toward the center of the cover 20. If a force F 2 essentially acting in the plug-on direction is exerted on the end wall 21 from above at a pressure point A2, this force F 2 acts on the edge section 22 via the fleece arm of length a1 and allows the snap-over process to be triggered. Previously, this was only possible essentially transversely to the plug-on direction by means of the force F 0 acting from the side directly on the edge section 22 in FIGS. 2a, 2c and 2d.
- an extension 18 can additionally be provided on the edge section 22 in accordance with an optional variant
- This extension 18 allows the im
- the lever arm a1 can be extended further by the end section 16 'also having a constriction 17, which is attached or molded onto the end section 16' can be and in the region of the end section also the inside diameter of the wall section 12a, that is to say the opening 11a, is narrowed. Then a force F 3 exerted on the pressure point A2 acts with the longer lever arm a2
- the lever arm a1 of FIG. 2c can also be extended by an end wall extension 19. Unlike the extension 18 shown in FIG. 2c, the extension 18 is
- End wall extension 19 is not arranged on the edge section 22 but on the end wall 21.
- This end wall extension 19 can be attached or formed in sections or over the entire circumference to the end wall 21 and allows the force F 2 which acts essentially in the push-on direction and is required to close the cap 20 to a lower value F 3 . to reduce.
- an applied force F 3 is generated.
- the longer lever arm a2 'with the contact point A1 as the lever point namely a greater torque than with the force F 2 and the lever arm a1 of FIG. 2c.
- the structure of the variant according to FIG. 2e corresponds to that of FIG. 2c. It also goes without saying that the variants shown in FIGS. 2c, 2d and / or 2e also in FIG.
- FIGs 3a to 3f show the operation of a closure system according to the invention, in which a cover 30 of the second embodiment is used to close an opening 11a.
- the lid can be produced in the same way as described above for the cap 20 and has in the same way expansion sections and intermediate sections in the edge section 32, only the intermediate sections 33 being shown in the cross sections of the figures for the sake of clarity.
- the lip sections and the variants thereof are also possible in the case of the cover 30 in a manner analogous to the cap 20.
- the cover 30 does not have a locking ring 29 projecting inwards, but rather a locking ring 39 projecting outwards, because it is not from the outside but from should clamp on the inside of the container wall.
- the cover 30 does not have a locking ring 29 projecting inwards, but rather a locking ring 39 projecting outwards, because it is not from the outside but from should clamp on the inside of the container wall.
- Cover with both an outwardly and an inwardly projecting locking ring which can then be used both as a cap and as a lid.
- the cover 30 could also be placed upside down on the can 10b without significantly changing its functionality.
- the middle section of the edge section 32 would then not extend in but opposite to the push-on direction and the cover 30 would jump from its closed to its open state by pressing on the end wall 31 in the push-on direction, which can be advantageous for certain applications.
- the edge section 32 thus ends both in its expansion sections (not shown) and in its intermediate sections 33 in an outer circumferential locking ring 39, which is also formed from a softer material component, preferably the same as the expansion sections.
- This circumferential locking ring 39 gives the thin-walled cover 30 additional dimensional stability, but is also sufficiently elastic to allow the enlargement of the outer circumference in the convex folding position shown in FIG. 3b. Because of its softer material properties, the locking ring 39 not only clamps particularly well in the inner groove 13b of the opening wall 12b to be closed, but can even assume the function of a sealing ring.
- the wall region 12b of the opening 11a to be closed has an annular groove 13b on the inside, into which the cover 30 is to snap, and which forms a stepped shoulder 15b on its lower edge.
- Attachment direction is referred to as protrusion 14b.
- Edge section 32 increases during this folding process.
- the engagement of the locking ring 39 in the groove 13b is shown again in detail in FIG. 3c.
- the cover 30 In order to expose the opening 11b again, the cover 30 must snap back into its original state. Then it can be pulled out of the opening 11b again due to the reduction in its outer diameter.
- a handle element was conventionally provided on the end wall 31, by means of which the cover 30 can be gripped and pulled upwards. As described in detail below, the second enables
- Embodiment of the present invention also an opening of the lid with a laterally (transversely to the direction of insertion) acting on the container wall 12b force F 4 , F 5 , SO that the grip element can be omitted.
- the overhang 14b has a length b1 up to the end of the wall section 12b which is at the extreme opposite to the push-on direction. If the user now exerts a force F 4 on the pressure point B2 from the outside, acting transversely to the direction of attachment
- Wall section 12b this acts with the length b1 as a lever arm and the contact point B1 between wall section 12b and edge section 32 due to the elastic deformation of the projection 14b on the cover 30 in such a way that it can snap into the open state without it requires a direct actuation of the edge section 32 or a pulling up of the end wall 31 via a grip element or the like.
- the protrusion 14b ' can also be made longer. As a result, not only is the lever arm lengthened to length b2, and accordingly it reduces the length required to open the cover 30
- FIG. 3e shows a second variant of the second exemplary embodiment.
- the wall section 12b has an opening below the inner groove 13b, in which a slide 13c is mounted.
- the slide 13c is a rod-shaped one which can be displaced in the opening transversely to the plug-in direction
- Actuating element for opening the cover 30 the user exerts a force F 5 ′ from the outside transversely to the push-on direction on the trigger 13d attached or molded on the outer end of the slide 13c.
- the trigger 13d has the shape of a hemispherical actuation button.
- the other end of the slide 13c meets in the interior of the container 10b the end of an edge section extension 34 which projects from the edge section 32 in the push-on direction.
- the extension 34 can be attached or molded to the edge section 32 in sections or over the entire circumference. In the variant shown, it essentially has a length b3 and is therefore longer than the edge section 32 as such.
- the extension 34 acts as a lever arm of length b3 up to the transition area between the edge section 32 and the end wall 31.
- the slide 13c with the trigger 13d can also be omitted and instead the wall section 12b has a constriction 13e on which the wall thickness is weakened.
- the constriction 13e can be a circumferential one
- Ring recess can be provided or only as grip recesses arranged in sections, preferably at two diametrically opposite points. If one presses radially inward in the area of the constriction 13e with the minimum force F 5 ′′, the extension 34 deforms so far into the interior of the container that it via the fleece arm b3 applies the torque required for the jump to the open bistable state on the end wall 31 away from the through the
- Constriction 13e weakened wall thickness the container wall 12b is firm enough to avoid unintentional opening with the force F 5 ". This prevents the container tightness of the second variant with the wall opening and the slide 13c from being impaired. On the other hand, for certain applications, this is precisely the case Wall breakthroughs desired, for example for pressure equalization between the interior of the container and
- the wall section 12b can also be made softer at this point in other ways, for example by using a softer material component or by subsequently softening the wall section 12b at this point.
- the present invention relates to a closure system with a three-dimensional structure 10a, 10b, in particular a container or an opening area of a technical apparatus, and a cover 20, 30 for plugging onto the three-dimensional structure 10a, 10b in order to close its opening 11a, 11b close.
- the cover 20, 30 has an end wall 21, 31 which can be deformed in a bistable manner between a first state which is curved in the push-on direction and a second state which is curved in the opposite direction to the push-on direction, and an annular edge section 22, 32.
- This has a larger outer circumference in the first bistable state than in the second bistable state and is therefore designed to effect a clamping attachment of the cover 20, 30 to a wall region 12a, 12b of the opening 11a, 11b by the edge section 22, 32 inside in the first state or outside in the second state presses the wall area 12a, 12b.
- the three-dimensional structure 10a, 10b is configured to transmit a force exerted on the closure system from outside at predefined locations A2, B2 in such a way that it causes the cover 20, 30 to snap from one to the other of the two bistable states.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Packages (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202018103730.7U DE202018103730U1 (de) | 2018-06-29 | 2018-06-29 | Dose mit Schnappverschluss |
PCT/DE2019/100598 WO2020001708A1 (de) | 2018-06-29 | 2019-06-27 | Dose mit schnappverschluss |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3807161A1 true EP3807161A1 (de) | 2021-04-21 |
EP3807161C0 EP3807161C0 (de) | 2023-11-01 |
EP3807161B1 EP3807161B1 (de) | 2023-11-01 |
Family
ID=67482895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19746430.8A Active EP3807161B1 (de) | 2018-06-29 | 2019-06-27 | Behälter mit einem bistabilen deckel |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210122533A1 (de) |
EP (1) | EP3807161B1 (de) |
JP (1) | JP2021529134A (de) |
DE (2) | DE202018103730U1 (de) |
WO (1) | WO2020001708A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202019101663U1 (de) | 2019-03-22 | 2020-06-23 | Roland Kittmann | Schnappverschluss mit Sicherheitsverriegelung |
DE102020124654A1 (de) | 2020-09-22 | 2022-03-24 | Bayerische Motoren Werke Aktiengesellschaft | Strukturbauteil |
DE102020124796A1 (de) | 2020-09-23 | 2022-03-24 | Bayerische Motoren Werke Aktiengesellschaft | Öffenbare Außenhaut |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR670576A (fr) * | 1929-02-28 | 1929-11-30 | Dispositif pour ouverture de boîtes et récipients, et boîtes et récipients comportant ce dispositif | |
DE20022999U1 (de) * | 2000-02-18 | 2002-10-31 | Artec Gmbh Entwicklungs Und Ko | Kunststoffschachtel mit Zusatzfunktion |
DE102015103036B4 (de) | 2015-03-03 | 2017-08-31 | Roland Kittmann | Bistabiles Verschlusselement |
DE202015105951U1 (de) | 2015-11-06 | 2017-02-07 | Roland Kittmann | Schnappdeckel in Mehrkomponenten-Spritzgusstechnik |
-
2018
- 2018-06-29 DE DE202018103730.7U patent/DE202018103730U1/de active Active
-
2019
- 2019-06-27 JP JP2020572984A patent/JP2021529134A/ja active Pending
- 2019-06-27 WO PCT/DE2019/100598 patent/WO2020001708A1/de unknown
- 2019-06-27 EP EP19746430.8A patent/EP3807161B1/de active Active
- 2019-06-27 US US17/255,273 patent/US20210122533A1/en not_active Abandoned
- 2019-06-27 DE DE112019003291.7T patent/DE112019003291A5/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP3807161C0 (de) | 2023-11-01 |
DE112019003291A5 (de) | 2021-04-08 |
DE202018103730U1 (de) | 2019-10-09 |
WO2020001708A1 (de) | 2020-01-02 |
EP3807161B1 (de) | 2023-11-01 |
JP2021529134A (ja) | 2021-10-28 |
US20210122533A1 (en) | 2021-04-29 |
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