EP1233925B1 - Can opener - Google Patents

Can opener Download PDF

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Publication number
EP1233925B1
EP1233925B1 EP00965709A EP00965709A EP1233925B1 EP 1233925 B1 EP1233925 B1 EP 1233925B1 EP 00965709 A EP00965709 A EP 00965709A EP 00965709 A EP00965709 A EP 00965709A EP 1233925 B1 EP1233925 B1 EP 1233925B1
Authority
EP
European Patent Office
Prior art keywords
pull hook
grip
opener according
opener
hook
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
EP00965709A
Other languages
German (de)
French (fr)
Other versions
EP1233925A1 (en
Inventor
Bruno Herren
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.)
Moha Moderne Haushaltwaren AG
Original Assignee
Moha Moderne Haushaltwaren 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
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Publication of EP1233925A1 publication Critical patent/EP1233925A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B7/00—Hand- or power-operated devices for opening closed containers
    • B67B7/44—Combination tools, e.g. comprising cork-screws, can piercers, crowncap removers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B7/00—Hand- or power-operated devices for opening closed containers
    • B67B7/30—Hand-operated cutting devices
    • B67B7/34—Hand-operated cutting devices with rotatable cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B7/00—Hand- or power-operated devices for opening closed containers
    • B67B7/40—Devices for engaging tags, strips, or tongues for opening by tearing, e.g. slotted keys for opening sardine tins
    • B67B7/403—Devices for engaging tags, strips, or tongues for opening by tearing, e.g. slotted keys for opening sardine tins adapted for engaging the ring of a pull tab for opening an aperture
    • B67B7/406—Devices for engaging tags, strips, or tongues for opening by tearing, e.g. slotted keys for opening sardine tins adapted for engaging the ring of a pull tab for opening an aperture and subsequently tearing off the top of the can

Definitions

  • the present invention relates to a Can opener according to the preamble of claim 1.
  • Such a can opener is known from US-A-4,782,594.
  • the applicant has been producing and selling a lot for years successful can opener for opening conventional cans.
  • the can lid is along its Cut through the inner edge and from the side wall of the can Cut. Because the separated part of the lid has sharp edges and can lead to injuries in recent years Years ago, so-called safety can openers were introduced, which cut through the can lid along its outer edge.
  • the connection between the can wall and the lid is made solved without the lid to be removed or the edge of the can sharp edges remain. Since the cutting wheel is not in One comes into contact with the contents of the can ensures that the cutting mechanism of the opener is not dirty and on the other hand, the contents of the can Contamination protected by the cutting mechanism.
  • Such safety can openers are known for example from US-A-4'782'594 and DE-U-298'02'030. Both pliers models and single-arm models are known for both cutting principles.
  • the packaging industry offers cans in which the lid can be detached from the can by means of a pull or tear ring along a peripheral predetermined breaking line.
  • tear-open boxes are more complex to manufacture and therefore more expensive than conventional boxes.
  • the predetermined breaking lines require narrow manufacturing tolerances and are therefore more susceptible to malfunctions. If, for example, the material thickness along the predetermined breaking line is too high, opening is only possible using considerable traction. Older or weak people in particular can find it difficult to open such a can.
  • US-A-5'018'409 is an opener for tear-open cans known. At the front end of this opener is on a top a notch is attached that has a nose for hanging the Tear ring defined. The back of the flat Oeffners is parabolic in shape and narrower Handle over. To open a tear-open can Ring attached to the edge of the lid folded up while doing so the predetermined breaking line immediately before the ring in known Way broken. Now the ring is in the notch on Front end of the opener hooked in and by pressing on the Handle section using the lever arm of the can lid detached from the can. The opener is with his unrolled parabolic back over the can lid and at the same time the lid area, which is the tear ring carries, raised and pulled up and back.
  • the Opener for example, punched out of a piece of sheet metal can is relatively narrow. The contact surface of the open back on the can lid is therefore small and when opening a can it can very easily tilt the Come openers.
  • Another opener for tear-open cans is from the US-Des. 267,925 known. This opener is also from a flat Sheet metal piece made. It has a hook-shaped end Opening the tear-open boxes as well as an opposite end to open bottles with bottle caps. The turn very narrow openers can also be easily used tilt.
  • the object of the present invention is to save space To provide can openers of it enables all commercially available cans to be safe and convenient to open and not the disadvantages mentioned above having.
  • the can opener according to the invention not only allows both Common types of can packaging with only one single device to open, but its ergonomic and Functionally advantageous design offers a use Maximum comfort and security.
  • the Openers according to the invention can be stowed in a very space-saving manner.
  • FIGS. 1 and 2 A first embodiment is shown in FIGS. 1 and 2 shown, here also the cutting mechanism 20th is shown, while in Figures 3 to 5 a second Embodiment is shown, here the cutting mechanism has been omitted.
  • the opener as a whole is designated by the reference number 1.
  • the most important element is a handle-shaped one Body 10.
  • the handle-shaped body 10 has two parallel, flat side surfaces 11, as seen in the top view in the figure 2 can be seen.
  • the handle-shaped body 10 has an upper, arched back surface 12 and one of these opposite curly lower surface 13.
  • By the curly lower surface 13 forms a head at one end 15, in which the cutting mechanism 20 is housed and on other end a thickened handle end 16 in which the pull hook 30 is at least partially recorded.
  • Between the head 15 and the thickened handle end 16 forms one Grip recess 14 in the curved lower surface 13.
  • In thickened handle end 16 is centered and parallel to the two Side surfaces 11 embedded a receiving groove 17.
  • This Recording groove 17 begins at the thickened handle end 16 and runs towards the recessed grip 14 inclined into the curly Lower surface 13. Through the receiving groove 17 form in thickened handle end 16 two side cheeks, which by a Swivel axis bearings 18 are interspersed.
  • the thickened head 15 contains the a total of 20 cutting mechanism.
  • This consists of a drive wheel 21 which rotatably on a Driving axis 26 sits.
  • the driving axis is perpendicular to the plan side surfaces 11 and penetrates the handle-shaped Body 10 completely.
  • End of the drive shaft 26 is a twist grip 22 attached by means of which the drive wheel 21 can be actuated. It does not run perpendicular to the driving axis 26 here Shown axis of the cutting wheel 23.
  • the cutting wheel 23 is outside during the actuation of the cutting mechanism on the weld bead of the can or can to be opened and sever it.
  • a two-point support sheet 24 is located thereby on the top edge of the can bead.
  • the cutting wheel 23 closes one with the two-point support sheet 24 Angle up to an upward parting force produce.
  • Such cutting mechanisms are from the beginning known documents mentioned in detail.
  • the pull hook 30 is about a pivot axis 31, which the already mentioned pivot axis bearing 18th interspersed to pivot through a certain angle.
  • the pull hook 30 In the pivoted State is the pull hook 30 with his Towing hook inner edge 35 on the groove bottom 17 '.
  • In the swung out Condition comes on the back, near the swivel axis End at the groove bottom 17 'to the system, whereby the Pivoting movement of the pull hook 30 is limited.
  • the pull hook 30 is a flat, relatively thick element. It can for example be formed from a steel plate or also from a high-strength, for example glass fiber reinforced Be made of plastic.
  • the pull hook 30 will penetrated by a pivot axis 31, which as already mentioned in the pivot axis bearing 18.
  • the pull hook 30 has in the embodiment of Figure 1 'a straight Towing hook inner edge 35 and a convex rolling back 33 the pull hook 30 instructs the end remote from the pivot axis the pulling hook inner edge 35 has a hook-in notch 32. In these Hook-in notch 32 comes to the pull ring R when actuated lie.
  • the shape of the notch 32 is in itself arbitrary can be designed, but it must be shaped so that the pull ring R not from the hooking notch 32 during operation also slipped. This is, for example, by a rectangular or trapezoidal recess achieved.
  • the course of the inner hook edge 35 is not in itself directly relevant. Instead of the straight line shown here The inner edge 35 could also run inward or be arched outside, but this is less is cheap. If the inner edge 35 is curved inwards, the pull hook 30 has a more crescent shape, however, the strength of the draw hook itself is reduced. However, is the inner edge 35 of the pull hook 30 arched outwards, the receiving groove must accordingly be deepened, or the groove bottom 17 'concave to be directed inwards. This then leads accordingly a reduction in the cross section of the handle-shaped body 10 in this area and corresponding to a certain Weakening.
  • FIG. 5 shows an optimized shape of the pull hook 30 on its own.
  • the hook-in notch 32 is located approximately at the opposite end to the pivot axis bearing 34.
  • the pulling hook inner edge 35 is shown here with a slight kink.
  • the rolling back 33 is, however, approximately the same as in the previously described solution. In the vicinity of the hook-in notch 32, the rolling back 33 has a radius r 1 , while in the region near the swivel axle bearing 34, the rolling back 33 has a radius r 2 .
  • the radius r 1 is smaller than the radius r 2 . This ensures that the tension ring R initially exerts a more upward tension component.
  • the opening activity is schematically indicated in dashed lines in FIG.
  • the pull ring R lies in the hook-in notch 32 and the tear-open cover D is pulled upwards, while the pull hook 30 rolls on the not yet opened area of the cover of the bushing B or can.
  • the pull hook has in the embodiment according to FIG. 5 an inner pulling hook edge running 35 on. Thanks to the kink 36, the swivel axis bearing comes 34 practically above the extended inner hook edge 35 to lie. This enables a clear contact edge 38 form the bottom of a stop recess 19 in handle-shaped body 10 comes to rest. Thanks to this design finds an improved force transmission from the draw hook 30 in the handle-shaped body 10 instead.
  • the draw hook 30 tends to be reinforced during the cross section of the handle-shaped body by the one angled here Course of the groove bottom 10 'is hardly reduced and because at the same time the pivot axis 31 practically in the extension of the groove bottom 17 'is arranged, the force on the Contact surface introduced directly into the stiffened area, while practically the solution described above total force over the bearing in the mentioned side cheeks is introduced laterally to the receiving groove.

Abstract

An opener having a grip-like body in which at one end is integrated a cutting mechanism for cutting open tins. An oppositely-lying thickened end has a receiving groove in which a pull hook is pivotally mounted about a pivot pin over a predetermined angle. For opening tear-open lids, a pull-ring is captured within an attachment recess on a pull hook inner edge. When pivoting the grip-like body the pull hook rolls along a rolling back of the pull hook, on the can lid and pulls up.

Description

Die vorliegende Erfindung betrifft einen Dosenöffner gemäss dem Oberbegriff des Patentanspruches 1.The present invention relates to a Can opener according to the preamble of claim 1.

Ein derartiger Dosenöffner ist aus der US-A-4 782 594 bekannt.Such a can opener is known from US-A-4,782,594.

Die Anmelderin produziert und vertreibt seit Jahren sehr erfolgreich Dosenöffner zum Oeffnen von herkömmlichen Dosen. Bei älteren Systemen wird der Dosendeckel entlang seines Innenrandes durchschnitten und von der Seitenwand der Dose getrennt. Da der abgetrennte Teil des Deckels scharfkantig ist und zu Verletzungen führen kann sind in den letzten Jahren sogenannte Sicherheitsdosenöffner eingeführt worden, welche den Dosendeckel entlang seines Aussenrandes durchschneiden. Die Verbindung zwischen Dosenwand und Deckel wird gelöst, ohne dass am zu entfernenden Deckel oder am Dosenrand scharfe Kanten zurückbleiben. Da das Schneidrad nicht in Kontakt mit dem Doseninhalt kommt ist einerseits gewährleistet, dass die Schneidmechanik des Oeffners nicht verschmutzt und andererseits wird der Doseninhalt vor Kontamination durch die Schneidmechanik geschützt. The applicant has been producing and selling a lot for years successful can opener for opening conventional cans. In older systems, the can lid is along its Cut through the inner edge and from the side wall of the can Cut. Because the separated part of the lid has sharp edges and can lead to injuries in recent years Years ago, so-called safety can openers were introduced, which cut through the can lid along its outer edge. The connection between the can wall and the lid is made solved without the lid to be removed or the edge of the can sharp edges remain. Since the cutting wheel is not in One comes into contact with the contents of the can ensures that the cutting mechanism of the opener is not dirty and on the other hand, the contents of the can Contamination protected by the cutting mechanism.

Solche Sicherheitsdosenöffner sind zum Beispiel aus der US-A-4'782'594 und der DE-U-298'02'030 bekannt.
Für beide Schneidprinzipien sind sowohl Zangenmodelle als auch einarmige Modelle bekannt.Such safety can openers are known for example from US-A-4'782'594 and DE-U-298'02'030.
Both pliers models and single-arm models are known for both cutting principles.

Um das Oeffnen von Dosen auch ohne einen Dosenöffner zu ermöglichen werden von der Verpackungsindustrie Dosen angeboten, bei denen der Deckel mittels eines Zug- oder Aufreissringes entlang einer peripheren Sollbruchlinie von der Dose gelöst werden kann. Solche Aufreissdosen sind in der Herstellung aufwendiger und dadurch teurer als die konventionellen Dosen. Die Sollbruchlinien bedingen enge Fertigungstoleranzen und sind daher anfälliger für Fehlfunktionen.
Ist zum Beispiel die Materialstärke entlang der Sollbruchlinie zu hoch, so ist das Oeffnen nur unter Einsatz erheblicher Zugkraft möglich. Gerade älteren oder schwachen Menschen kann das Oeffnen einer solchen Dose Mühe bereiten.In order to enable the opening of cans even without a can opener, the packaging industry offers cans in which the lid can be detached from the can by means of a pull or tear ring along a peripheral predetermined breaking line. Such tear-open boxes are more complex to manufacture and therefore more expensive than conventional boxes. The predetermined breaking lines require narrow manufacturing tolerances and are therefore more susceptible to malfunctions.
If, for example, the material thickness along the predetermined breaking line is too high, opening is only possible using considerable traction. Older or weak people in particular can find it difficult to open such a can.

Aus der US-A-5'018'409 ist ein Oeffner für Aufreiss-Dosen bekannt. Am Vorderende dieses Oeffners ist an einer Oberseite eine Kerbe angebracht, die eine Nase zum Einhängen des Aufreissringes definiert. Die Rückenpartie des flächigen Oeffners ist parabolisch geformt und geht in eine schmalere Griffpartie über. Zum Oeffnen einer Aufreiss-Dose wird der randständig am Deckel angebrachte Ring hochgeklappt und dabei die Sollbruchlinie unmittelbar vor dem Ring in bekannter Weise durchbrochen. Nun wird der Ring in die Kerbe am Vorderende des Oeffners eingehängt und durch Druck auf die Griffpartie unter Ausnutzung des Hebelarmes der Dosendeckel von der Dose gelöst. Der Oeffner wird dabei mit seinem parabolischen Rücken über den Dosendeckel abgerollt und gleichzeitig wird der Deckelbereich, der den Aufreissring trägt, angehoben und nach oben und hinten gezogen. Der Oeffner, der zum Beispiel aus einem Stück Blech gestanzt sein kann, ist relativ schmal. Die Auflagefläche des Oeffnerrückens auf dem Dosendeckel ist daher klein und beim Oeffnen einer Dose kann es dadurch sehr leicht zum Verkippen des Oeffners kommen.US-A-5'018'409 is an opener for tear-open cans known. At the front end of this opener is on a top a notch is attached that has a nose for hanging the Tear ring defined. The back of the flat Oeffners is parabolic in shape and narrower Handle over. To open a tear-open can Ring attached to the edge of the lid folded up while doing so the predetermined breaking line immediately before the ring in known Way broken. Now the ring is in the notch on Front end of the opener hooked in and by pressing on the Handle section using the lever arm of the can lid detached from the can. The opener is with his unrolled parabolic back over the can lid and at the same time the lid area, which is the tear ring carries, raised and pulled up and back. The Opener, for example, punched out of a piece of sheet metal can is relatively narrow. The contact surface of the open back on the can lid is therefore small and when opening a can it can very easily tilt the Come openers.

Ein weiterer Oeffner für Aufreiss-Dosen ist aus der US-Des. 267'925 bekannt. Auch dieser Oeffner ist aus einem flachen Blechstück gefertigt. Er weist ein hakenförmiges Ende zum Oeffnen der Aufreiss-Dosen sowie ein entgegengesetztes Ende zum Oeffnen von Flaschen mit Kronkorken auf. Der wiederum sehr schmale Oeffner kann ebenfalls leicht beim Einsatz verkippen.Another opener for tear-open cans is from the US-Des. 267,925 known. This opener is also from a flat Sheet metal piece made. It has a hook-shaped end Opening the tear-open boxes as well as an opposite end to open bottles with bottle caps. The turn very narrow openers can also be easily used tilt.

Sollen die beiden oben beschriebenen Oeffner auch zum Oeffnen grösserer Dosen eingesetzt werden können, so müssen sie entsprechend gross dimensioniert werden, was sie wiederum unhandlich und sperrig macht.
Mit beiden Oeffnern können keine herkömmlichen Dosen geöffnet werden. If the two openers described above can also be used to open larger cans, they must be dimensioned accordingly, which in turn makes them unwieldy and bulky.
Conventional cans cannot be opened with both openers.

Die Aufgabe der vorliegenden Erfindung ist es einen platzsparenden Dosenöffner zur Verfügung zu stellen, der es ermöglicht alle handelsüblichen Dosen sicher und komfortabel zu öffnen und der die oben genannten Nachteile nicht aufweist.The object of the present invention is to save space To provide can openers of it enables all commercially available cans to be safe and convenient to open and not the disadvantages mentioned above having.

Diese Aufgaben werden durch einen Dosenöffner gemäss den Merkmalen des Anspruches 1 gelöst.
Weitere Ausführungsvarianten ergeben sich aus der Beschreibung und den abhängigen Ansprüchen.These tasks are solved by a can opener according to the features of claim 1.
Further design variants result from the description and the dependent claims.

Der erfindungsgemässe Dosenöffner erlaubt es nicht nur, beide gebräuchliche Typen von Dosenverpackungen mit nur einem einzigen Gerät zu öffnen, sondern seine ergonomisch und funktionell vorteilhafte Gestaltung bietet beim Gebrauch ein Höchstmass an Komfort und Sicherheit. Zudem kann der erfindungsgemässe Oeffner sehr platzsparend verstaut werden.The can opener according to the invention not only allows both Common types of can packaging with only one single device to open, but its ergonomic and Functionally advantageous design offers a use Maximum comfort and security. In addition, the Openers according to the invention can be stowed in a very space-saving manner.

In den Zeichnungen ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt und in der nachfolgenden Beschreibung erläutert. Es zeigt:

Figur 1
eine Seitenansicht einer Ausführungsform des erfindungsgemässen Oeffners mit ausgeklapptem Zughaken, wobei der Körper des Oeffners im Bereich der Anbringung des Zughakens teilweise geschnitten dargestellt ist.
Figur 2
eine Ansicht von oben auf den erfindungsgemässen Dosenöffner gemäss Figur 1;
Figur 3
eine Seitenansicht einer weiteren Ausführungsform des erfindungsgemässen beffners teilweise im Schnitt mit eingeklapptem Zughaken, wobei der Zughaken in einer ausgeklappten Stellung strichpunktiert dargestellt und die Schneidmechanik weggelassen ist;
Figur 4
eine Ansicht von oben auf den erfindungsgemässen Dosenöffner gemäss Figur 3, wobei ebenfalls die Schneidmechanik weggelassen ist;
Figur 5
eine Seitenansicht eines erfindungsgemässen Zughakens.
In the drawings, an embodiment of the subject matter of the invention is shown and explained in the following description. It shows:
Figure 1
a side view of an embodiment of the opener according to the invention with the pull hook unfolded, the body of the opener being shown partially cut in the area where the pull hook is attached.
Figure 2
a top view of the can opener according to the invention according to Figure 1;
Figure 3
a side view of a further embodiment of the opener according to the invention, partly in section, with the pulling hook folded in, the pulling hook being shown in broken lines in a folded-out position and the cutting mechanism omitted;
Figure 4
a view from above of the can opener according to the invention according to Figure 3, wherein the cutting mechanism is also omitted;
Figure 5
a side view of a pull hook according to the invention.

In der Zeichnung sind zwei Ausführungsbeispiele des Erfindungsgegenstandes dargestellt, die sich im wesentlichen durch die Ausgestaltungsform des Zughakens und den damit verbundenen Anpassungen unterscheiden. Für funktional gleiche Elemente sind folglich gleichbleibende Bezugszahlen verwendet worden. Eine erste Ausführungsform ist in den Figuren 1 und 2 dargestellt, wobei hier auch der Schneidmechanismus 20 dargestellt ist, während in den Figuren 3 bis 5 eine zweite Ausführungsform abgebildet ist, wobei hier der Schneidmechanismus weggelassen worden ist. In the drawing, two embodiments of the Presented subject matter, which is essentially through the design of the pulling hook and with it differentiate related adjustments. For functionally the same Elements are consequently used with the same reference numbers Service. A first embodiment is shown in FIGS. 1 and 2 shown, here also the cutting mechanism 20th is shown, while in Figures 3 to 5 a second Embodiment is shown, here the cutting mechanism has been omitted.

Der Oeffner insgesamt ist mit der Bezugszahl 1 bezeichnet. Dieser hat als wesentlichstes Element einen griffförmigen Körper 10. Der griffförmige Körper 10 hat zwei parallele, plane Seitenflächen 11, wie dies in der Ansicht von oben in der Figur 2 ersichtlich ist. Der griffförmige Körper 10 hat eine obere, gewölbte Rückenfläche 12 und eine dieser gegenüberliegende geschweifte Unterfläche 13. Durch die geschweifte Unterfläche 13 bildet sich am einen Ende ein Kopf 15, in dem der Schneidmechanismus 20 untergebracht ist und am anderen Ende ein verdicktes Griffende 16, in dem der Zughaken 30 mindestens teilweise Aufnahme findet. Zwischen dem Kopf 15 und dem verdickten Griffende 16 bildet sich so eine Griffmulde 14 in der geschweiften Unterfläche 13. Im verdickten Griffende 16 ist mittig und parallel zu den beiden Seitenflächen 11 eine Aufnahmenut 17 eingelassen. Diese Aufnahmenut 17 beginnt am verdickten Griffende 16 und läuft zur Griffmulde 14 hin gerichtet geneigt in die geschweifte Unterfläche 13 aus. Durch die Aufnahmenut 17 bilden sich im verdickten Griffende 16 zwei Seitenwangen, welche durch ein Schwenkachsenlager 18 quer durchsetzt sind.The opener as a whole is designated by the reference number 1. The most important element is a handle-shaped one Body 10. The handle-shaped body 10 has two parallel, flat side surfaces 11, as seen in the top view in the figure 2 can be seen. The handle-shaped body 10 has an upper, arched back surface 12 and one of these opposite curly lower surface 13. By the curly lower surface 13 forms a head at one end 15, in which the cutting mechanism 20 is housed and on other end a thickened handle end 16 in which the pull hook 30 is at least partially recorded. Between the head 15 and the thickened handle end 16 forms one Grip recess 14 in the curved lower surface 13. In thickened handle end 16 is centered and parallel to the two Side surfaces 11 embedded a receiving groove 17. This Recording groove 17 begins at the thickened handle end 16 and runs towards the recessed grip 14 inclined into the curly Lower surface 13. Through the receiving groove 17 form in thickened handle end 16 two side cheeks, which by a Swivel axis bearings 18 are interspersed.

Wie bereits erwähnt befindet sich im verdickten Kopf 15 der insgesamt mit 20 bezeichnete Schneidmechanismus. Dieser besteht aus einem Treibrad 21, welches drehfest auf einer Treibachse 26 sitzt. Die Treibachse verläuft senkrecht zu den planen Seitenflächen 11 und durchsetzt den griffförmigen Körper 10 vollständig. Auf dem dem Treibrad 21 gegenüberliegenden Ende der Treibachse 26 ist ein Drehgriff 22 befestigt, mittels dem das Treibrad 21 betätigbar ist. Senkrecht zur Treibachse 26 verläuft die hier nicht dargestellte Achse des Schneidrades 23. Das Schneidrad 23 liegt während der Betätigung des Schneidmechanismus' aussen auf der Schweisswulst der zu öffnenden Büchse oder Dose auf und durchtrennt dieselbe. Ein Zweipunktauflagebogen 24 liegt dabei auf der Oberkante der Dosenwulst auf. Das Schneidrad 23 schliesst mit dem Zweipunktauflagebogen 24 einen spitzen Winkel auf, um eine nach oben gerichtete Trennkraft zu erzeugen. Solche Schneidmechanismen sind aus den eingangs erwähnten Dokumenten im Detail bekannt.As already mentioned, the thickened head 15 contains the a total of 20 cutting mechanism. This consists of a drive wheel 21 which rotatably on a Driving axis 26 sits. The driving axis is perpendicular to the plan side surfaces 11 and penetrates the handle-shaped Body 10 completely. On the opposite of the driving wheel 21 End of the drive shaft 26 is a twist grip 22 attached by means of which the drive wheel 21 can be actuated. It does not run perpendicular to the driving axis 26 here Shown axis of the cutting wheel 23. The cutting wheel 23 is outside during the actuation of the cutting mechanism on the weld bead of the can or can to be opened and sever it. A two-point support sheet 24 is located thereby on the top edge of the can bead. The cutting wheel 23 closes one with the two-point support sheet 24 Angle up to an upward parting force produce. Such cutting mechanisms are from the beginning known documents mentioned in detail.

In der erwähnten Aufnahmenut 17 des griffförmigen Körpers 10 findet wie bereits erwähnt ein schwenkbarer Zughaken 30 teilweise Aufnahme. Der Zughaken 30 ist um eine Schwenkachse 31, welche das bereits erwähnte Schwenkachsenlager 18 durchsetzt, um einen bestimmten Winkel schwenkbar. Im eingeschwenkten Zustand liegt der Zughaken 30 mit seiner Zughakeninnenkante 35 auf den Nutenboden 17' an. Im ausgeschwenkten Zustand kommt das rückseitige, schwenkachsnahe Ende am Nutenboden 17' zur Anlage, wodurch die Schwenkbewegung des Zughakens 30 begrenzt wird.In the mentioned receiving groove 17 of the handle-shaped body 10 finds, as already mentioned, a swiveling pull hook 30 partial admission. The pull hook 30 is about a pivot axis 31, which the already mentioned pivot axis bearing 18th interspersed to pivot through a certain angle. In the pivoted State is the pull hook 30 with his Towing hook inner edge 35 on the groove bottom 17 '. In the swung out Condition comes on the back, near the swivel axis End at the groove bottom 17 'to the system, whereby the Pivoting movement of the pull hook 30 is limited.

Der Zughaken 30 ist ein planes, relativ dickes Element. Es kann beispielsweise aus einer Stahlplatte geformt sein oder auch aus einem hochfesten, beispielsweise glasfaserverstärkten Kunststoff gefertigt sein. Der Zughaken 30 wird durch eine Schwenkachse 31 durchsetzt, welche wie bereits erwähnt im Schwenkachsenlager 18 liegt. Der Zughaken 30 hat in der Ausführungsform nach Figur 1' eine gerade verlaufende Zughakeninnenkante 35 und einen konvexen Abwälzrücken 33. An dem der Schwenkachse entfernten Ende weist der Zughaken 30 an der Zughakeninnenkante 35 eine Einhängekerbe 32 auf. In diese Einhängekerbe 32 kommt der Zugring R bei der Betätigung zu liegen. Die Gestalt der Einhängekerbe 32 ist an sich beliebig gestaltbar, doch muss sie so geformt sein, dass der Zugring R während der Betätigung nicht aus der Einhängekerbe 32 hinausrutscht. Dies wird beispielsweise durch eine etwa rechteckige oder trapezförmige Ausnehmung erreicht.The pull hook 30 is a flat, relatively thick element. It can for example be formed from a steel plate or also from a high-strength, for example glass fiber reinforced Be made of plastic. The pull hook 30 will penetrated by a pivot axis 31, which as already mentioned in the pivot axis bearing 18. The pull hook 30 has in the embodiment of Figure 1 'a straight Towing hook inner edge 35 and a convex rolling back 33 the pull hook 30 instructs the end remote from the pivot axis the pulling hook inner edge 35 has a hook-in notch 32. In these Hook-in notch 32 comes to the pull ring R when actuated lie. The shape of the notch 32 is in itself arbitrary can be designed, but it must be shaped so that the pull ring R not from the hooking notch 32 during operation also slipped. This is, for example, by a rectangular or trapezoidal recess achieved.

Der Verlauf der Zughakeninnenkante 35 ist an sich nicht direkt von Bedeutung. Statt des hier dargestellten geraden Verlaufes könnte die Innenkante 35 auch nach innen oder aussen gewölbt gestaltet sein, wobei dies jedoch weniger günstig ist. Verläuft die Innenkante 35 nach innen gewölbt, so hat der Zughaken 30 eine mehr sichelförmige Gestalt, wodurch allerdings die Festigkeit des Zughakens selber reduziert wird. Ist jedoch die Innenkante 35 des Zughakens 30 nach aussen gewölbt, so muss entsprechend die Aufnahmenut vertieft werden, beziehungsweise der Nutenboden 17' konkav nach innen gerichtet sein. Dies führt entsprechend dann zu einer Reduzierung des Querschnittes des griffförmigen Körpers 10 in diesem Bereich und entsprechend zu einer gewissen Schwächung.The course of the inner hook edge 35 is not in itself directly relevant. Instead of the straight line shown here The inner edge 35 could also run inward or be arched outside, but this is less is cheap. If the inner edge 35 is curved inwards, the pull hook 30 has a more crescent shape, however, the strength of the draw hook itself is reduced. However, is the inner edge 35 of the pull hook 30 arched outwards, the receiving groove must accordingly be deepened, or the groove bottom 17 'concave to be directed inwards. This then leads accordingly a reduction in the cross section of the handle-shaped body 10 in this area and corresponding to a certain Weakening.

In der Figur 5 ist eine optimierte Form des Zughakens 30 für sich allein gezeigt. Die Einhängekerbe 32 befindet sich etwa am gegenüberliegenden Ende zum Schwenkachsenlager 34. Im Gegensatz zur Ausführungsform nach den Figuren 1 und 2 ist hier die Zughakeninnenkante 35 leicht geknickt verlaufend dargestellt. Der Abwälzrücken 33 ist jedoch etwa gleich wie in der vorher beschriebenen Lösung gestaltet. In der Nähe der Einhängekerbe 32 weist der Abwälzrücken 33 einen Radius r1 auf, während im Bereich nahe des Schwenkachslagers 34 der Abwälzrücken 33 einen Radius r2 hat. Der Radius r1 ist dabei kleiner als der Radius r2. Hierdurch wird erreicht, dass der Zugring R anfänglich eine mehr nach oben gerichtete Zugkomponente ausübt. Schematisch angedeutet ist die Oeffnungstätigkeit in der Figur 1 strichliniert dargestellt. Der Zugring R liegt in der Einhängekerbe 32 ein und der Aufreissdeckel D wird nach oben gezogen, während der Zughaken 30 sich auf den noch nicht geöffneten Bereich des Deckels der Büchse B beziehungsweise Dose abrollt.FIG. 5 shows an optimized shape of the pull hook 30 on its own. The hook-in notch 32 is located approximately at the opposite end to the pivot axis bearing 34. In contrast to the embodiment according to FIGS. 1 and 2, the pulling hook inner edge 35 is shown here with a slight kink. The rolling back 33 is, however, approximately the same as in the previously described solution. In the vicinity of the hook-in notch 32, the rolling back 33 has a radius r 1 , while in the region near the swivel axle bearing 34, the rolling back 33 has a radius r 2 . The radius r 1 is smaller than the radius r 2 . This ensures that the tension ring R initially exerts a more upward tension component. The opening activity is schematically indicated in dashed lines in FIG. The pull ring R lies in the hook-in notch 32 and the tear-open cover D is pulled upwards, while the pull hook 30 rolls on the not yet opened area of the cover of the bushing B or can.

Wie bereits erwähnt weist der Zughaken in der Ausführungsform gemäss Figur 5 eine geknickt verlaufende Zughakeninnenkante 35 auf. Dank der Knickstelle 36 kommt das Schwenkachsenlager 34 praktisch oberhalb der verlängerten Zughakeninnenkante 35 zu liegen. Dies ermöglicht es, eine eindeutige Anlagekante 38 auszubilden, die am Boden einer Anschlagausnehmung 19 im griffförmigen Körper 10 zur Anlage kommt. Dank dieser Ausgestaltung findet eine verbesserte Krafteinleitung vom Zughaken 30 in den griffförmigen Körper 10 statt. Gleichzeitig wird jedoch der Zughaken 30 eher verstärkt, während der Querschnitt des griffförmigen Körpers durch den hier gewinkelten Verlauf des Nutenbodens 10' kaum reduziert wird und weil zugleich die Schwenkachse 31 praktisch in der Verlängerung des Nutenbodens 17' angeordnet ist, wird die Kraft über die Anschlagfläche direkt in den versteiften Bereich eingeleitet, während bei der zuvor beschriebenen Lösung praktisch die gesamte Kraft über das Lager in die erwähnten Seitenwangen seitlich der Aufnahmenut eingeleitet wird.As already mentioned, the pull hook has in the embodiment according to FIG. 5 an inner pulling hook edge running 35 on. Thanks to the kink 36, the swivel axis bearing comes 34 practically above the extended inner hook edge 35 to lie. This enables a clear contact edge 38 form the bottom of a stop recess 19 in handle-shaped body 10 comes to rest. Thanks to this design finds an improved force transmission from the draw hook 30 in the handle-shaped body 10 instead. At the same time however, the draw hook 30 tends to be reinforced during the cross section of the handle-shaped body by the one angled here Course of the groove bottom 10 'is hardly reduced and because at the same time the pivot axis 31 practically in the extension of the groove bottom 17 'is arranged, the force on the Contact surface introduced directly into the stiffened area, while practically the solution described above total force over the bearing in the mentioned side cheeks is introduced laterally to the receiving groove.

In den Figuren 3 und 4 wurde der bereits zuvor beschriebene Schneidmechanismus nicht dargestellt. In dem vorzugsweise aus Kunststoff gefertigten griffförmigen Körper 10 sind lediglich das Treibachsenlager 25 und die Aufnahmebohrungen 27 für den Auflagebogen 24 ersichtlich.In Figures 3 and 4, the previously described was Cutting mechanism not shown. In which preferably from Plastic-made handle-shaped body 10 are only the driving axle bearing 25 and the receiving bores 27 for the Support sheet 24 can be seen.

Claims (9)

  1. A can opener (1) of a grip-like body (10) with a head (15) at one end in which there is accommodated a cutting mechanism (20) for separating a can lid from a can, characterised in that the grip-like body (10) at its end lying opposite the head is connected in a pivotally movable manner to a pull hook (30) for opening tear-open cans, said pull hook at its end region remote to the pivot pin (31) being provided with an attachment notch (32), wherein the pivoting movement of the pull hook (30) is limited by abutment means (17, 19) on the body (10).
  2. A can opener according to claim 1, characterised in that the grip-like body (10) comprises a receiving groove (17) in which the pull hook (30) may be pivoted-in in a non-used condition, wherein the groove base (17') forms the abutment means in this position.
  3. A can opener according to claim 1, characterised in that the grip-like body (10) comprises a thickened end (16) lying opposite the head (15), so that a grip trough (14) is formed between the head and the thickened end (16).
  4. A can opener according to claim 1, characterised in that the pull hook (30) has a roughly crescent shape, with an inner edge (35) and a convexly running rolling back (33), wherein the radius of curvature (r1, r2) increases from the region near the attachment notch to the region near the pivot pin (31).
  5. A can opener according to claim 4, characterised in that an inner edge (35) of the pull hook (30) runs in a broken line from which by way of a pivot arc (37) the inner edge (35) merges into a contact edge (38) which in the condition of use abuts an abutment recess (19) on the grip-like body (10).
  6. A can opener according to claim 2, characterised in that the pull hook (30) in the non-used condition partly projects out of the receiving groove (17).
  7. A can opener according to clam 5, characterise in that the receiving groove base (17') runs according to the shape of the inner edge (35), running with an angular bend, of the pull hook (30), so that the imagined extension of the groove base (17') runs through the centre of the pivot pin bearing (18).
  8. A can opener according to claim 2, characterised in that the receiving groove (17) in the end region at the pivot pin bearing (18) merges into an abutment recess (19).
  9. A can opener according to claim 2, characterised in that the grip-like body (10) comprises two parallel plane side surfaces (11) and a receiving groove is formed centrally and parallel to the side surfaces (11) in the body (10).
EP00965709A 1999-12-03 2000-10-16 Can opener Expired - Lifetime EP1233925B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH222799 1999-12-03
CH222799 1999-12-03
PCT/CH2000/000555 WO2001040096A1 (en) 1999-12-03 2000-10-16 Can opener

Publications (2)

Publication Number Publication Date
EP1233925A1 EP1233925A1 (en) 2002-08-28
EP1233925B1 true EP1233925B1 (en) 2003-12-17

Family

ID=4228844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00965709A Expired - Lifetime EP1233925B1 (en) 1999-12-03 2000-10-16 Can opener

Country Status (11)

Country Link
US (1) US6618886B2 (en)
EP (1) EP1233925B1 (en)
CN (1) CN1164476C (en)
AT (1) ATE256631T1 (en)
AU (1) AU767317B2 (en)
CA (1) CA2380811C (en)
DE (1) DE50004822D1 (en)
ES (1) ES2209997T3 (en)
HK (1) HK1045142B (en)
TW (1) TW557927U (en)
WO (1) WO2001040096A1 (en)

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US10233066B2 (en) * 2016-11-01 2019-03-19 Alston Technologies Development Co., Ltd. Adjustable can opener
USD834904S1 (en) 2017-01-05 2018-12-04 Dkb Household Uk Limited Can opener

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Also Published As

Publication number Publication date
WO2001040096A1 (en) 2001-06-07
HK1045142B (en) 2005-02-04
AU767317B2 (en) 2003-11-06
AU7637900A (en) 2001-06-12
CN1164476C (en) 2004-09-01
CA2380811C (en) 2010-07-13
CN1360555A (en) 2002-07-24
DE50004822D1 (en) 2004-01-29
HK1045142A1 (en) 2002-11-15
US20010022030A1 (en) 2001-09-20
EP1233925A1 (en) 2002-08-28
ATE256631T1 (en) 2004-01-15
TW557927U (en) 2003-10-11
US6618886B2 (en) 2003-09-16
CA2380811A1 (en) 2001-06-07
ES2209997T3 (en) 2004-07-01

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