EP0836576A1 - Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece - Google Patents

Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece

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Publication number
EP0836576A1
EP0836576A1 EP96923931A EP96923931A EP0836576A1 EP 0836576 A1 EP0836576 A1 EP 0836576A1 EP 96923931 A EP96923931 A EP 96923931A EP 96923931 A EP96923931 A EP 96923931A EP 0836576 A1 EP0836576 A1 EP 0836576A1
Authority
EP
European Patent Office
Prior art keywords
hinge
elements
tension
pressure
hinge arrangement
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
Application number
EP96923931A
Other languages
German (de)
English (en)
Other versions
EP0836576B2 (fr
EP0836576B1 (fr
Inventor
Rudolf Rentsch
Louis Lagler
Bruno Streich
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.)
Creanova AG
Original Assignee
Creanova 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
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Application filed by Creanova AG filed Critical Creanova AG
Publication of EP0836576A1 publication Critical patent/EP0836576A1/fr
Application granted granted Critical
Publication of EP0836576B1 publication Critical patent/EP0836576B1/fr
Publication of EP0836576B2 publication Critical patent/EP0836576B2/fr
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Links

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
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
    • B65D47/0809—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions
    • B65D47/0814—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions by at least three hinge sections, at least one having a length different from the others
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D1/00—Pinless hinges; Substitutes for hinges
    • E05D1/02—Pinless hinges; Substitutes for hinges made of one piece
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2999/00—Subject-matter not otherwise provided for in this subclass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/13—Plastic hinge

Definitions

  • the present invention relates to a hinge according to the preamble of patent claim 1.
  • a so-called snap effect should be brought about regularly with such hinges for plastic closures.
  • the snap effect is understood to mean an independent opening of the hinge after a certain forced initial deflection (dead center) of the hinge system and an analogous effect when closing, in that the hinge automatically returns to a closed position after a dead center has been exceeded.
  • This effect is basically taken over by special spring elements.
  • the snap force and the angle of action are characteristic quantities.
  • the snap force is the resistance that the hinge system has to opening and closing.
  • the angle of action is defined by the area which the hinge parts independently overcome due to the spring action and is thus determined by the area between the rest positions of the hinge parts.
  • the basic principle in the large majority of such hinges is to pivot a cover part about a defined main axis of movement.
  • European patent EP 0 056 469 describes a hinge for one
  • Plastic closure the axis of rotation of which is formed by a defined main film hinge connecting the cover and the closure body and is clearly defined.
  • the snap effect is achieved through interaction with
  • SPARE BLADE Lich this main hinge arranged spring arms reached.
  • the snap effect in one embodiment is based on the bend of U-shaped intermediate elements, in other embodiments on a bend in wall areas of the closure parts, the closure lid generally undergoing a bend in the center area.
  • the snap effect is also caused by bending effects around the narrow side.
  • the hinge arrangements known from the patent specifications WO 92/13775 or EP 0 331 940 use primary bending effects in combination with a main axis in order to achieve a spring effect for a snap effect.
  • the corresponding closures essentially open on a circular path because of the existing main geometric axes. In the constructions mentioned, certain parts protrude from the outer contour of the closure when the closure is closed.
  • US Pat. No. 5,148,912 describes a hinge arrangement for a closure with a closure body and cover, in which the closure has the same circular cross-section as the closure body itself.
  • the cover and closure body are connected via two flexible, belt-like connecting arms which are of trapezoidal design .
  • These connecting arms are designed to be flexurally elastic and are attached to the closure and the closure body via thin points.
  • the film hinges of the thin sections on the closure body side are arranged obliquely to one another. If the closure is viewed from the rear, these film hinges are inevitably but randomly arranged in the form of a V which is open at the bottom.
  • the arrangement of the two lid-side film hinges is mirror-symmetrical.
  • This hinge does not have a good snap effect, since no suitable spring forces can be built up.
  • the known hinge arrangements have various disadvantages. In all known hinges with a main axis, against which tensioning straps or similar elements are arranged offset (hinge axis offset), it is necessary to arrange this main axis outside the outer contour of the closure in the case of convex injection-molded closures. The above elements are undesirable for technical and aesthetic reasons. Another disadvantage is that the snap effect is not predictable due to the difficult mechanical influences and regularly leads to an insufficient snap effect or to inadmissible material stresses. Another disadvantage is the fact that conventional hinge arrangements only allow unpredictable and inadequate angles of action, which are often only around 100 °.
  • the mechanical effects that underlie the functioning of such closures are essentially spiral spring effects.
  • the energy that is required to deform a bending element by means of bending determines the snap force of the hinge. If an element is subjected to a bend relevant for this effect, the corresponding bending deformations of these elements are large in comparison to its characteristic size (eg thickness of a bending plate) or the bending springs have a considerable spatial expansion in the unloaded state.
  • the required functional elements of conventional hinge arrangements such as the main hinge and tensioning straps, can no longer be realized or lead to inadequate snap effects or impermissible material stresses.
  • Another limitation is that the closures in the area of the hinge must necessarily have a convex outer contour.
  • the path that describes the hinge parts relative to each other when opening or closing is essentially a circular path in all of these conventional hinge principles, which is exactly specified by the main film hinge. If requirements are placed on the relative movement of the hinge parts when opening, they cannot be covered by such constructions.
  • a certain mutual movement curve of the hinge parts is advantageous, for example, when an obstacle area has to be overcome.
  • the path of movement is also important if the two hinge parts contain functionally interacting elements.
  • the invention enables a hinge system which has two or more essentially tension-free rest positions and intermediate dead points during the opening and closing process.
  • the states beyond the dead centers are predetermined and controlled.
  • the functional, mechanical effects are no longer bending effects around the narrow side, but coordinated pulling and pushing effects with their possible secondary appearances. If functionally important elements of the present invention are subjected to bending, this is only secondary. Such bending deformations are fundamentally prevented as far as possible by appropriate technical measures (for example a rigid design of the pressure element concerned).
  • the hinge type according to the invention is further characterized in that, for. B. with injected one-piece plastic closures, no interfering parts protrude from the closure contour.
  • the idea of the invention aims at designing and concentrating the necessary functional elements in such a way that an essentially predeterminable kinematics of the closure is achieved, while at the same time ensuring that the end positions and the intermediate resting positions of the closure are largely free of tension.
  • the snap effect and in particular the snap force are generated according to the invention exclusively by the concentrated functional elements lying between the hinge parts.
  • the lid and closure body of a plastic closure can thus be designed with freely definable rigidity and with a largely arbitrary geometry.
  • the hinge parts are not firmly connected to one another via a main hinge in the main axis of movement, the result is that unintentional relative movements of the hinge parts, for example torsions transversely to the pivoting movement, do not damage the hinge.
  • the invention has no fixed main movement axis. At any point in the movement process, only a momentary, non-fixed swivel axis can be determined, which can also be skewed at times. This virtual axis moving during the movement process is not physically present and does not coincide with a structural part of the hinge. Nevertheless, the cover parts move on the intended path and reliably reach the end position intended for them.
  • This virtual axis and thus the relative movement of the hinge parts are significantly influenced and controlled via the geometric structure of the hinge mechanism. More degrees of freedom are made possible and a total angle of effect of more than 180 ° with - if desired - several snap effects can be achieved. Special embodiments also allow an at least approximately complete integration of the functional elements into the outer contour of the closure, especially in the case of integrally molded plastic closures.
  • FIG. 1 shows a functional, schematic structure of a tilting stage 1 with two intermediate members 20, 21, two pressure elements 2.1, 2.2, two tension elements 3.1, 3.2 and two thrust elements 4.1 and 4.2
  • Fig. 2 shows an embodiment of a flip-flop 1 in the closed state
  • Fig. 3 shows the embodiment of Figure 2 in the open state
  • FIG. 4 schematically shows the movement curve and three tilting states of a hinge 25.1-25.3 with two tilting stages connected in series.
  • FIG. 5 shows an application example of a flip-flop according to FIGS. 2 and 3 in a one-piece injection molded plastic closure 25 with the closure closed
  • FIG. 6 shows the plastic closure according to FIG. 5 in the open state
  • FIG. 8 shows a further exemplary embodiment of a tilting stage 1 with partial thrust elements 6
  • FIG. 9 schematically shows the mode of operation of a particular exemplary embodiment with an overall angle of effect of 180 °
  • FIG. 11 shows a schematic illustration of a tilting process with its angular relationships
  • FIG. 13 shows an exemplary embodiment with two flip-flops 1.1, 1.2 connected in series in the closed state
  • FIG. 14 shows the example of FIG. 13 in a partially open state, with the first flip-flop 1.1 open
  • FIG. 15 shows the example according to FIGS. 13 and 14 in the completely open state, with tilting stages 1.1, 1.2 open
  • the hinge according to the invention which connects at least two hinge parts in an articulated manner, consists of one or more tilting stages, each of which is bordered by rigid intermediate members or the hinge parts themselves.
  • the purpose of a single tilting step is to give the hinge a certain partial snap force and partial angle (based on the entire opening / closing movement) and is responsible for a snap effect. If several tilt levels are connected in series, the hinge receives the same number of snap effects as tilt levels.
  • the hinge passes as many dead centers as it has tilting stages connected in series.
  • Each flip-flop thus carries a certain proportion of the total angle of action.
  • the corresponding partial angle can assume a certain desired size through a corresponding geometric arrangement of the functionally important elements of a flip-flop. A relationship between the partial angle of a tilting step and the geometric arrangement exists and is used in a targeted manner.
  • FIG. 1 shows a schematic representation of the functional elements of a flip-flop 1 in the closed state.
  • the tilting stage contains two pressure elements 2.1, 2.2, which are connected in an articulated manner, for example by means of film hinges, to two intermediate members 20, 21.
  • Two tension elements 3.1 and 3.2 are arranged parallel to these pressure elements.
  • Two thrust elements 4.1 and 4.2 are arranged between the pressure elements 2.1, 2.2 and the two tension elements 3.1, 3.2.
  • the flip-flop thus has two functional groups, namely two connecting elements 5.1, 5.2, which in turn each contain a pressure element 2, a pulling element 3 and a thrust element 4.
  • the functionally important elements are connected in an articulated manner to the rigid intermediate members 20 and 21. This flexibility can be achieved with plastic injection molded lids with the help of thin points or analogous measures.
  • the intermediate members 20 and 21 limit the tilt level 1 here, or the tilt level is directly connected to hinge parts not shown here.
  • the rigid intermediate links 20, 21 In order to move from the closed to the open state of a tilting stage 1, the rigid intermediate links 20, 21 must be moved against each other in such a way that the intermediate link 20 rotates about a momentary axis of rotation, which here is approximately parallel to the connecting line of the center points of the two pressure elements lies and is not stationary during the closing process, moved backwards.
  • the force that has to be applied describes the snap force of the tilting step 1. Such a force naturally occurs when the hinge containing the tilting step is opened. The force required changes until the dead center of the flip-flop is reached. If this force increases, the tensions in the functionally important element also increase.
  • the tension elements 3.1, 3.2 are loaded more and more on tension and the pressure elements 2.1, 2.2 more and more on pressure.
  • the corresponding elements shorten or lengthen reversibly. Energy is stored in these elements.
  • the pressure and tension elements act as compression springs or as elastic spring elements and bring about the spring effect for each connecting element. If the critical dead center is reached, the flip-flop jumps to the open position without further action.
  • the proportion and arrangement of the pressure elements 2.1, 2.2 and tension elements 3.1, 3.2 are determined in such a way that optimized angles of action and snap forces occur. It is essential that the necessary pressure forces can be introduced into the pressure element and absorbed without buckling. For this purpose, the thickness of the pressure elements in relation to the thickness of the tension elements must be observed. Too small a thickness of the pressure elements leads to unfavorable snap behavior.
  • the dashed auxiliary lines entered in FIG. 1 through the end points of the pressure and tension element of each connecting element 5.1, 5.2 enclose an angle ⁇ , which, as will be explained further below, according to the invention in order to achieve the desired partial angle of a tilting step. is set.
  • the vectors 30 and 31 enclosed in the end positions of the closure by two normal to the planes spanned by the pressure elements 2.1, 2.2 and the tensile elements 3.1, 3.2 are important.
  • the pressure elements 2.1 and 2.2 can be connected to one another. This connection can preferably be designed as a pressure-resistant or kink-resistant plate and form a unit with the pressure elements. This pressure-resistant plate is fastened in regions or, if desired, over its entire width to the intermediate members 20 and 21 by means of suitable hinge elements.
  • closures of different shapes or designs even if they are based on the same principle, have very different snap effects and different snap forces.
  • Certain designs of these closures even completely lack a snap effect, although this is an explicit goal of corresponding patent specifications.
  • the reason for this lies in the complex mechanical processes on which such hinges are based, or in the fact that the hinge parts themselves make a considerable contribution to the functioning of the closure and thus, even with slight changes in geometry, effects which are not easy or cannot be foreseen occur.
  • These disadvantages are eliminated by the present invention in that the functionally essential elements are reduced to a minimum and are concentrated locally and in terms of their spatial extent, but at the same time allowing more flexible movement sequences compared to conventional hinge principles.
  • the operating principle of the tilting stage 1 is based on the presence of one or more pressure-loaded pressure elements 2.1, 2.2 which are in active combination with correspondingly arranged tension-loaded tension elements 3.1, 3.2.
  • pressure and tension forces are specifically introduced.
  • undesired movements it is unavoidable that secondary pressure loads also act on the tension element.
  • At least one push element 4.1, 4.2 is provided per tilting step 1.
  • plastic injection molded parts for example, it can be designed as a thin, shear-resistant membrane or thin point.
  • This thrust element 4.1, 4.2 is of essential importance for the invention in that it prevents undesired movement sequences and coordinates the locking parts about their virtual movement axis.
  • the thrust element can in each case directly connect a tension element to a pressure element, or else it can be provided at another location.
  • the tensioning force and the total angle of action, and consequently the snap effect of a tilting step are essentially achieved only with the aid of pressure and tension elements and not by means of spiral springs.
  • FIG. 2 and FIG. 3 A preferred embodiment of a flip-flop is shown in FIG. 2 and FIG. 3.
  • the two figures show the flip-flop 1 once in the closed state (FIG. 2) and in the open state (FIG. 3). It contains two pressure elements 2.1 and 2.2 and two tension elements 3.1 and 3.2.
  • the corresponding thrust elements 4.1, 4.2 which ensure the necessary interaction of the pressure and tension elements, are formed here by shear-resistant diaphragms which, in this exemplary embodiment, are for optical reasons, above all if the hinge is made of plastic using injection molding technology, it is designed as a thin, continuous membrane.
  • the flip-flop 1 then consists of two connecting elements 5.1, 5.2, which are connected by thin points 10 to the rigid intermediate members 20.1, 21.1 adjacent to the flip-flop.
  • the stress on the thin points 10 can be kept in a permissible range by means of suitable geometry or pressure or tensile stiffness of the essential elements. Excessive forces can be reduced in certain areas by plastic deformation of a permissible part of the thin points.
  • the pressure elements 2 are constructed in such a way that they cannot buckle under the normal operating loads.
  • FIG. 3 clearly shows how the tilting stage is moved around the thin spots 10 and comes to rest in its open position. Both the positions shown in FIG. 2 and in FIG. 3 all elements of the flip-flop are essentially stress-free. In principle, neither bending effects in the intermediate members 20.1, 21.2 nor in the connecting elements 5.1, 5.2 are required during the tilting process. Bending or kinking of the connecting elements does not occur.
  • FIG. 4 A possible relative movement of the hinge parts 23, 24 of a hinge 25.1 is shown schematically in FIG. 4.
  • the hinge parts 23, 24 are connected here via two tilting stages connected in series.
  • the first flip-flop is made up of intermediate links 20, 21 and connecting elements 5.2.
  • the second flip-flop is made up of intermediate members 21, 22 and connecting elements 5.1.
  • Figure 4 shows three states of tilt of the hinge.
  • the hinge is shown in the closed state 25.1, in the first tilting state 25.2, ie with the first tilting stage open, and finally in the open state 25.3, in which both tilting stages are open.
  • the opening path of the hinge is illustrated by the spatial curve or arrow 32. This opening path 32 can be significantly influenced by the arrangement and design of the partial tilt stages. It can be seen in FIG.
  • the first tilting step which is formed from the connecting elements 5.2 and the intermediate members 20, 21, either has a smaller snap force or the same snap force as the second tilting step consisting of the connecting elements 5.2 and the intermediate members 21, 22, but then has a geometrically determined snap effect.
  • the first tilting step jumps to its open state first. All three tilting states shown in FIG. 4 are essentially stress-free by using the relationships according to the invention to be explained below.
  • FIGS. 5 and 6 now show an application of such a tilting step for a plastic snap closure 25 which can be injection molded in one piece.
  • the closure 25 contains two hinge parts, namely the closure body 24 and a corresponding cover 23.
  • a filling opening 16 on the closure body 24 is intended to interact with a counterpart 16 of the cover 23.
  • the hinge parts are separated by a closure level 15.
  • the closure here has a single flip-flop which contains connecting elements 5.3 and 5.4.
  • the connecting elements 5.3, 5.4 are connected to the cover 23 or to the closure body 24 via thin points 10. Since there is only a single tilting stage here, the intermediate links described above are replaced by the cover 23 or the closure body 24 itself.
  • this flip-flop enables an overall angle of effect of over 180 ° and thus an opening angle of approximately 200 ° here, so that the closure in the open position (FIG. 6) is downward in relation to the closure plane. is inclined and makes the fill opening 16 fully accessible. If the closure is ideally designed so that no or only minimal plastic deformation occurs when the closure is actuated, the opening angle (position during injection molding) and the angle of action of the tilting step are the same.
  • a bevel 18 allows the plastic cover to be manufactured without major tool expenditure in such a way that the aforementioned open position can be achieved without the outer walls of the closure parts interfering with one another.
  • the connecting elements 5.3 and 5.4 each consist of the very flexurally rigid pressure elements 2.3, 2.4, the tension elements 3.3, 3.4 and intermediate thrust membranes 4.3, 4.4.
  • the outside of the connecting elements 5.3, 5.4 is flat and is optimally integrated into the outer contour of the closed plastic cover.
  • the cross section of the plastic cover in FIGS. 4 and 5 is optimal for the use of the tilting step shown here, since thin points 10 and optimal wrap angles can be realized. This type of tilting step can also be combined with other locking geometries.
  • the connecting elements can be shaped accordingly.
  • a particular advantage of the invention is that the connecting elements 5.3, 5.4 can in principle be arranged free of the position of the closure plane. It is thus possible, for example, to move the latter in the vertical direction against the closure body 24 and to integrate it fully in this, which allows great freedom in terms of the closure geometries and design options.
  • Out 5 and 6 it can be clearly seen that in the closed state the tilting step is perpendicular to the hinge parts or to the closure plane and here passes directly into the rigid closure body 24 or cover 23.
  • FIG. 1 Another preferred exemplary embodiment of a flip-flop 1 is shown in FIG.
  • This tilting stage contains two pressure elements 2.1, 2.2 and two elements 3.1, 3.2, which are each arranged parallel to one another.
  • the flexurally rigid pressure elements 2.1, 2.2 are located directly next to a central hinge plane and are connected to one another via a thin point 11. This middle plane does not necessarily have to coincide with the symmetry plane.
  • a pulling element 3 can be connected to a pushing element 2 by a thin shear-resistant membrane for aesthetic reasons.
  • the wall thicknesses can be varied, it being necessary to ensure that the functions of a tilting step that are essential to the invention are retained.
  • the push element 4.1 with a wall thickness which corresponds to the wall thickness of the tension element 3.1, 3.2 or in some cases is greater, as long as the functional tensile elasticity of the tension element 3.1, 3.2 remains guaranteed.
  • the connecting elements 5.1, 5.2 here are directly connected to one another via the thin point 11 and each have a pronounced, stiffened pressure side and a relatively thin, elastic tension side.
  • FIG. 8 Another embodiment of a tilting stage 1 is shown in FIG. 8 and consists of two pressure elements 2.1, 2.2 and two tension elements 3.1, 3.2.
  • the flexurally rigid pressure elements 2.1, 2.2 are attached to the adjacent rigid intermediate members 20.2, 21.2 with two thin points 10.2 perpendicular to the main movement plane.
  • the tension elements 3.1, 3.2 are designed such that they are each fastened to the intermediate members 20.2, 21.2 with two relatively long thin points 10.1. The transition between the long ones Thin points 10.1 and the tension elements 3.1, 3.2 take on the function of the thrust elements described above.
  • the thrust elements are here connected to the tension elements 3.1, 3.2.
  • the connecting elements 5 are no longer to be understood as spatial units here, but still have the functional parts that are essential to the invention, namely pressure, tension and thrust elements. If the two thin points 10.1 of a tension element were to be connected continuously, a trapezoidal membrane would result. In order to obtain relatively elastic tensile elements 3.1, 3.2, the actual tensile edge of the membrane is left, whereas a corresponding recess is provided on the side facing the pressure element. The tensile element shaped in this way can introduce relatively large tensile forces into a relatively long thin point and thus relieve it.
  • a tilting step consists of two tension elements and two pressure elements, the latter being rigidly connected to one another.
  • the pressure elements which are designed to be rigid in this way, are located in the central plane (but not necessarily the plane of symmetry) of the hinge and are fastened to the adjacent rigid intermediate members with two thin points perpendicular to the main plane of movement. If the tension and compression elements are connected over their entire length by means of a shear-resistant thin membrane, and if the membrane is connected to the intermediate members with thin points, a trapezoidal area results, which consists of the tension element and the thrust element.
  • each flip level is basically only one Partial angle of the entire hinge movement recorded.
  • the partial angle of the flip-flop corresponds to the total angle of action. The necessary relationships are explained below.
  • FIG. 9 schematically shows an embodiment with only one tilting step, of which only part of a connecting element 5 is shown here.
  • the flip-flop is characterized by two planes of symmetry 40, 41. These planes of symmetry 40, 41 are generally retained in every opening position of the hinge. This version has a (theoretical) angle of action of 180 °. It is further assumed that a position with an opening angle of 0 ° means the closed state shown and an open position means an opening angle of 180 °.
  • the wrap angle ⁇ is the angle that can be seen in a top view of the hinge between the planes of the intermediate links in the closed position (cf. FIG. 1, arrows 30, 31). If the intermediate links in other embodiments are not perpendicular to the hinge parts or the pressure and tension elements are not aligned parallel to one another, the angle ⁇ must be determined accordingly.
  • the plane spanned by the pressure elements and the plane spanned by the tension elements are accordingly mutually opposed spaced.
  • the symmetry levels are shown in FIG. 9.
  • the plane of symmetry 40 is the stationary plane of symmetry of the flip-flop throughout the entire movement. It generally forms the plane of symmetry between the connecting elements 5.
  • the plane of symmetry 41 is movable and forms the second plane of symmetry in every state of movement. It forms the plane of symmetry of each connecting element 5 to itself. From FIG. 9, its position in the closed position 41.1 and in the open position 41.2 of the tilting step can be seen.
  • FIG. 9 shows half of an intermediate link 21 and part of a connecting element 5.
  • the model shown describes approximately the mechanical processes of the flip-flop.
  • the relationships and the resulting constraint, which causes the snap force, is shown below as a model.
  • Forcing is understood to mean the deformation imposed on the material, which causes an elastic (reversible) state of tension. The material resists the elastic deformation imposed, on which the snap effect is based.
  • specific tension and pressure zones are formed. The areas designated as pressure zones are designed in such a way that buckling out of their plane is prevented.
  • tension zones can be varied in length and thickness in such a way that, due to the geometry, the stretch imposed on the material remains within the elastic (reversible) material behavior.
  • plane of symmetry 41 The symmetrical configuration of the tilting step ensures a good snap force by avoiding a double hinge effect within the tilting step.
  • each of the connecting elements 5 is regarded as an element that is extensible in its plane in the tensile region. The connecting elements 5 always remain in one plane, so that bending out of this plane is not considered permissible.
  • the reference numbers * .1 each refer to elements in the closed position, those with * .2 to elements in the open state.
  • the reason for the constraint can best be understood if a point P in space is considered.
  • This point P lies on the line of symmetry 43 of the intermediate links 5 and in the movable plane of symmetry 41. Its position depends on the opening angle of the flip-flop.
  • the position of P on the line of symmetry plays no relevant meaning for these considerations. P would move, due to the hinge condition to which it is subject, on the circular path k1 with the center at point A and the hinge axis 10 as the axis of rotation. Due to the symmetry conditions of the flip-flop that are enforced according to the invention, however, point P is forced onto a curve k2, which in the model is approximated as a circle with center in B.
  • a straight line e2 between the stationary point B and the movable point on k2 which for the sake of clarity was not shown in FIG. 9 (cf. FIG. 10), forms at each opening angle of the tilting step the point normal to k2 is the surface normal to plane 41.
  • This straight line e2 moves together with the connecting element 5.
  • a straight line e1, between the stationary point B and the movable point on k1, would describe the straight line e2 if it did not impose any constraint would be subject.
  • the half wrap angle ⁇ / 2 and the angle ⁇ / 2 which have a significant influence on the snap effect, can also be clearly seen.
  • FIG. 10 shows schematically the constraint state of half the connecting element 5.
  • Reference 43.3 shows the position of the line of symmetry 43 as a result of the constraint.
  • the pressure and tension ranges 2, 3 of the connecting element 5 are also shown as lines.
  • the constructive position of the point P for determining the angle K does of course not necessarily have to be in the middle of the section of the symmetry line 43 shown here.
  • the position is dependent on the selected material thicknesses of the pressure and tension areas 2, 3 and determined by the neutral point on the line 43.
  • the neutral point here means the point at which the stresses along the line 43 are in equilibrium.
  • FIG. 11 now shows a schematic partial representation of the relationships of a tilting step with an opening angle y less than 180 °.
  • the opening angle y of a flip-flop can be selected according to the requirements. In order to achieve two stress-free states according to the invention in the closed and in the open position of a flip-flop, the following relationship is to be fulfilled. These interrelationships according to the invention are also intended for an opening angle y of more than 180 °.
  • the intermediate link 21 which is only partially shown here, half of a connecting element 5 is shown in the closed 5.1 and in the open position 5.2.
  • the intermediate link 21 and the connecting element are connected via a hinge axis 10.
  • FIG. 12 shows a typical course of the constraint angle K of a flip-flop as a function of the angle ⁇ and the opening angle y of a flip-flop. It is assumed that an angle ⁇ is selected which leads to the stress-free end positions according to the invention. As has already been shown, K means a measure of the constraint of the material. Given the wrap angle ⁇ , the maximum squeeze of the material and the dead center of the snap force are given in the points with a horizontal tangent. The dead center lies in half the opening angle y of the flip-flop.
  • FIGS. 13-15 show a hinge with two tilting steps 1.1, 1.2 with rigid intermediate members 20, 21 and 22, and two hinge parts 23, 24. Of course, the tilting steps can also pass directly into the hinge parts.
  • the flip-flops are shown schematically and correspond, for example, to the flip-flops as described with reference to FIGS. 2 and 3.
  • the hinge is shown in Figure 13 in the closed state. If the tilting stage 1.1 jumps to its open state, the first theoretically stress-free tilting state of the hinge corresponds to the state shown in FIG. 14. In this tilting state, no external forces act on the hinge.
  • the flip-flop 1.1 is fully open and the flip-flop 1.2 is still fully closed.
  • the hinge shown in FIG. 14 has already brought about a first partial snap effect.
  • the invention prefers, particularly in the case of one-piece injection-molded hinge parts, to provide an overall effective angle of 180 ° in order to simplify tool construction.
  • geometries of the tilting stages are preferred which, like the exemplary embodiments shown in FIGS. 2, 3, 7 and 8, have as few articulation points as possible.
  • a particular advantage of the invention also lies in the fact that a good seal can be achieved with little and maintenance-friendly, tool-technical effort thanks to the concentration of the functional elements while largely avoiding slits or recesses in closures, in particular in the areas adjacent to the hinge.
  • the seal can preferably be carried out, with further avoidance of recesses, by measures such as those provided for in international patent application PCT / EP 95/00651.
  • the tension and compression elements described can also be arranged at an angle to one another, not in parallel.
  • two or more tilting stages can also be arranged side by side.
  • the individual elements of the flip-flops arranged next to one another can have no connection to one another or, if desired, can be connected by means of a functionally unimportant membrane. It is thus conceivable to combine several tilting stages in their mode of operation, for example to increase the snap effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Springs (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Vehicle Body Suspensions (AREA)
  • Prostheses (AREA)
  • Toys (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

L'invention concerne un système de charnière à effet ressort, sans charnière principale, avec au moins deux parties de charnière. Entre les parties de charnière, il est prévu un ou plusieurs niveaux de bascule (1) montés en série. Ces niveaux de bascule (1) comportent chacun au moins deux éléments de connexion dont chacun est constitué d'un élément de pression (2,4, 2,5) résistant à la flexion et d'un élément de traction (3,3, 3,4) élastique à la traction. Chacun des éléments de connexion est fixé par des raccords articulés (10) sur des éléments intermédiaires (2,3, 2,4) ou directement sur les parties de charnière. L'élément de pression et l'élément de traction sont disposés l'un contre l'autre approximativement de manière à résister au cisaillement, à l'aide d'au moins un élément de cisaillement (4,3 , 4,4) associé.
EP96923931A 1995-07-01 1996-06-26 Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece Expired - Lifetime EP0836576B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH193395 1995-07-01
CH1933/95 1995-07-01
CH193395 1995-07-01
PCT/EP1996/002780 WO1997002189A1 (fr) 1995-07-01 1996-06-26 Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece

Publications (3)

Publication Number Publication Date
EP0836576A1 true EP0836576A1 (fr) 1998-04-22
EP0836576B1 EP0836576B1 (fr) 1999-09-01
EP0836576B2 EP0836576B2 (fr) 2002-07-24

Family

ID=4221994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96923931A Expired - Lifetime EP0836576B2 (fr) 1995-07-01 1996-06-26 Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece

Country Status (21)

Country Link
US (1) US6041477A (fr)
EP (1) EP0836576B2 (fr)
JP (1) JP4021480B2 (fr)
CN (1) CN1071689C (fr)
AR (1) AR002660A1 (fr)
AT (1) ATE183979T1 (fr)
BR (1) BR9609647A (fr)
CA (1) CA2225856C (fr)
CZ (1) CZ295839B6 (fr)
DE (1) DE59602960D1 (fr)
DK (1) DK0836576T4 (fr)
ES (1) ES2139369T5 (fr)
HU (1) HU220958B1 (fr)
MX (1) MX9800018A (fr)
NO (1) NO313233B1 (fr)
NZ (1) NZ312679A (fr)
PL (1) PL178867B1 (fr)
SK (1) SK283326B6 (fr)
TW (1) TW326431B (fr)
WO (1) WO1997002189A1 (fr)
ZA (1) ZA965584B (fr)

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WO2000044639A1 (fr) 1999-01-27 2000-08-03 Creanova Ag Mecanisme de securite
WO2005007526A1 (fr) 2003-07-18 2005-01-27 Creanova Ag Bouchon a charniere moule en position fermee
US8733566B2 (en) 2004-09-01 2014-05-27 Creanova Universal Closures, Ltd. Tamper evidence means for a closure and a tamper evident closure

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US6460718B1 (en) * 1997-10-28 2002-10-08 Gateway Plastics Incorporated Container with a threaded cap having a stepped sealing ring with a plurality of narrow sealing surfaces
EP1075432B1 (fr) 1998-04-30 2002-09-25 Creanova AG Charniere a axes multiples coordonnes et fermeture dans laquelle elle est utilisee
US6321923B1 (en) * 2000-04-26 2001-11-27 Seaquist Closures Foreign, Inc. Bistable hinge with reduced stress regions
CA2428869A1 (fr) * 2000-11-17 2002-05-23 Seaquist Closures Foreign, Inc. Charniere en elastomere pour un couvercle de fermeture
US6844873B2 (en) * 2001-03-09 2005-01-18 Peter W. Johnson Reverse cantilever assembly for input devices
KR100452188B1 (ko) * 2002-05-21 2004-10-08 현대자동차주식회사 차량의 후륜 트레일링 암 구조
US6672487B1 (en) 2002-06-07 2004-01-06 Owens-Illinois Closure Inc. Fluid dispensing closure, package and method of manufacture
US6766926B1 (en) 2002-07-29 2004-07-27 Owens-Illinois Closure Inc. Dispensing closure, package and method of manufacture
US6880736B1 (en) 2002-09-23 2005-04-19 Owens-Illinois Closure Inc. Dispensing closure, package and method of manufacture
US7427005B1 (en) 2002-11-27 2008-09-23 Owens-Illinois Closure Inc. Dispensing closure, package and method of assembly with film seal piercing
US6889883B2 (en) * 2003-01-29 2005-05-10 Cerf Brothers Bag Company Dry CD port for a backpack or bag
JP4410498B2 (ja) * 2003-06-18 2010-02-03 東罐興業株式会社 キャップのヒンジ構造
WO2005093768A1 (fr) * 2004-03-29 2005-10-06 Pioneer Corporation Structure articulée et membre de structure articulée
EP1879807A2 (fr) * 2005-03-14 2008-01-23 Creanova Universal Closures Ltd. Dispositif de fermeture
CA2622081C (fr) 2005-09-15 2014-07-08 Creanova Universal Closures Ltd. Capsule a charniere
US7685676B2 (en) * 2006-02-24 2010-03-30 Mc Clellan W Thomas Living hinge
US20070267451A1 (en) * 2006-05-17 2007-11-22 Owens-Illinois Closure Inc. Dispensing closure, closure and container package, and method of manufacture
WO2009101117A1 (fr) * 2008-02-14 2009-08-20 Creanova Universal Closures Ltd. Fermeture pourvue d’une articulation externe
WO2010098453A1 (fr) * 2009-02-27 2010-09-02 大成化工株式会社 Chapeau et récipient à chapeau
USD613599S1 (en) 2009-09-11 2010-04-13 Telebrands Corp. Beverage container closure with pressure release
US20110062159A1 (en) * 2009-09-11 2011-03-17 Ajit Khubani Beverage container closure with pressure release
US8397957B2 (en) 2010-01-06 2013-03-19 Berry Plastics Corporation Dispensing valve
IT1403607B1 (it) * 2010-12-22 2013-10-31 Luigi Zaini S P A Contenitore di sorprese particolarmente per ovetti di cioccolato
US8899437B2 (en) 2012-01-20 2014-12-02 Gateway Plastics, Inc. Closure with integrated dosage cup
US8955705B2 (en) 2012-03-26 2015-02-17 Gateway Plastics, Inc. Closure for a container
US9475623B2 (en) 2012-03-26 2016-10-25 Gateway Plastics, Inc. Closure for a container
USD679181S1 (en) 2012-03-26 2013-04-02 Gateway Plastics, Inc. Closure for a container
HUE037292T2 (hu) * 2013-02-08 2018-08-28 Obrist Closures Switzerland Továbbfejlesztések egy záróelemben vagy záróelemhez
CA2843864C (fr) 2013-03-14 2020-09-08 Nova Chemicals Corporation Polymere a charnieres
CA2844886C (fr) 2014-03-06 2020-09-01 Nova Chemicals Corporation Charniere en polyethylene reticulee par rayonnement
US9970222B1 (en) * 2014-12-17 2018-05-15 The United States Of America As Represented By The Secretary Of The Air Force Compliant hinge for membrane-like structures
ES2712094B2 (es) * 2018-06-12 2019-10-17 Sanchez Jose Francisco Gonzalez Tapón abatible para envases
PL3741703T3 (pl) * 2019-05-21 2022-09-05 Société Lorraine De Capsules Metalliques - Manufacture De Bouchage Zakrętka przeznaczona do pozostania przymocowaną do pojemnika po otwarciu pojemnika
DE202022105764U1 (de) 2022-10-12 2022-10-27 Jan Thilo Schnappdeckel für ein Rohrende

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000044639A1 (fr) 1999-01-27 2000-08-03 Creanova Ag Mecanisme de securite
WO2005007526A1 (fr) 2003-07-18 2005-01-27 Creanova Ag Bouchon a charniere moule en position fermee
EP1889791A1 (fr) 2003-07-18 2008-02-20 Creanova AG Fermeture à charnière moulée en position fermée
US9969535B2 (en) 2003-07-18 2018-05-15 Creanova Ag Hinged closure moulded in closed position
US8733566B2 (en) 2004-09-01 2014-05-27 Creanova Universal Closures, Ltd. Tamper evidence means for a closure and a tamper evident closure

Also Published As

Publication number Publication date
HUP9802739A3 (en) 1999-03-29
CN1071689C (zh) 2001-09-26
US6041477A (en) 2000-03-28
ES2139369T3 (es) 2000-02-01
CA2225856A1 (fr) 1997-01-23
NO976117L (no) 1998-02-26
CN1189805A (zh) 1998-08-05
TW326431B (en) 1998-02-11
MX9800018A (es) 1998-07-31
WO1997002189A1 (fr) 1997-01-23
DK0836576T3 (da) 2000-03-27
CZ295839B6 (cs) 2005-11-16
NO976117D0 (no) 1997-12-29
DK0836576T4 (da) 2002-11-11
CZ393397A3 (cs) 1999-05-12
JPH11508522A (ja) 1999-07-27
DE59602960D1 (de) 1999-10-07
PL324084A1 (en) 1998-05-11
ZA965584B (en) 1997-01-31
BR9609647A (pt) 1999-06-29
EP0836576B2 (fr) 2002-07-24
NO313233B1 (no) 2002-09-02
NZ312679A (en) 1998-12-23
JP4021480B2 (ja) 2007-12-12
ES2139369T5 (es) 2003-02-16
HUP9802739A2 (hu) 1999-02-01
HU220958B1 (hu) 2002-07-29
PL178867B1 (pl) 2000-06-30
SK169497A3 (en) 1998-08-05
SK283326B6 (sk) 2003-06-03
AU702212B2 (en) 1999-02-18
AU6416496A (en) 1997-02-05
EP0836576B1 (fr) 1999-09-01
CA2225856C (fr) 2007-08-21
AR002660A1 (es) 1998-03-25
ATE183979T1 (de) 1999-09-15

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