EP1479487B1 - Knife - Google Patents

Knife Download PDF

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Publication number
EP1479487B1
EP1479487B1 EP04010250A EP04010250A EP1479487B1 EP 1479487 B1 EP1479487 B1 EP 1479487B1 EP 04010250 A EP04010250 A EP 04010250A EP 04010250 A EP04010250 A EP 04010250A EP 1479487 B1 EP1479487 B1 EP 1479487B1
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EP
European Patent Office
Prior art keywords
housing
knife
latch
orifice
housing shell
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
EP04010250A
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German (de)
French (fr)
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EP1479487A1 (en
Inventor
Gudula Polei
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.)
Martor KG
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Martor KG
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Publication date
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Publication of EP1479487A1 publication Critical patent/EP1479487A1/en
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Publication of EP1479487B1 publication Critical patent/EP1479487B1/en
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Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00Hand knives with one or more detachable blades
    • B26B5/001Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
    • B26B5/003Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use comprising retraction means for the blade or the blade holder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00Hand knives with one or more detachable blades
    • B26B5/001Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use

Definitions

  • the invention relates to a knife according to the preamble of claim 1.
  • a known knife of this kind is in the US 3,316,635 or in the US 5 099 578 A disclosed.
  • the invention has for its object to provide a knife of the type mentioned, which is suitable both as a disposable knife for the food industry and as a cheap knife for a blade change and nevertheless ensures a secure locking of the two housing shells ,
  • a plurality of locking hooks are arranged as locking projections on the inside of the first housing shell in the edge region, which provided in the locking position in the edge region of the second housing shell, one each Undercut edge having locking openings engage as locking recesses and engage under a linear relative movement of the first housing shell either in the housing longitudinal axis or transversely to the undercut edges of the locking holes, and that the connecting element without tools in the two housing shells passing through opening can be used.
  • the connecting element is used without tools in the opening, both Housing shells penetrates.
  • the locking hooks and the locking openings can be brought with their undercut edges both in a direction parallel to the housing longitudinal axis and transversely thereto, in any case linear displacement direction in its locking position. Also, an inexpensive production of the two housing shells made of plastic is readily possible.
  • the locking hook engage behind the undercut edges of the locking openings by providing beveled, wedge-shaped ramp surfaces with a certain bias.
  • the housing shells can remain connected with appropriate design of the wedge-shaped ramp surface of locking hook and undercut edges under a suitably sized bias.
  • an advantageous embodiment according to the invention is that the opening for receiving the connecting element is arranged on the handle blade side remote from the handle blade end portion of the handle body.
  • the connecting element is a sleeve-like component with a serving as a suspension opening axial passage opening.
  • the connecting element consists of an opening in the two housing shells with resilient latching tongues extending through expansion dowel, wherein the opening is a passage opening, which consists of two mutually aligned partial openings of the two housing shells.
  • This expansion anchor can at any point of the handle body, at a Knife with a slider, for example, on the handle-side end portion of the handle body, are arranged.
  • the expansion dowel passes through the two housing shells inextricably on the handle side end portion of the handle body in the passage opening.
  • This embodiment is suitable as a disposable knife, in particular for the food industry, because a blade change due to the insoluble use of the expansion anchor is only possible by its destruction and a second matching expansion dowel is not available.
  • guide surfaces for a slide with the knife blade to be held thereon are arranged on the inside of the housing shells, and an actuating element which is guided in an oval longitudinal opening of at least one housing shell and firmly connected to the slide.
  • the slider consists of two mirror-inverted to the housing longitudinal axis and by means of Rastvor- and recesses fauxklipsbaren slider elements, wherein on each longitudinal side of the slider in each housing shell a guided in an oval longitudinal opening actuator for a left and a right-handed is provided.
  • one end of a spring loaded on train is articulated in an advantageous development of the invention to the handle side of the handle body facing the end of the slider, the other end on the inside of one of the housing shells on a projecting retaining pin is set at the handle end of the handle body. Since when pushing out the knife blade from the handle body by means of the actuating handle, the above-described spring is placed under a bias, takes place when sliding the thumb of the operating hand of the actuating handle an automatic Insertion of the knife blade into the housing.
  • the actuating handle is advantageously provided with an ergonomically designed corrugated or dome-shaped attack surface for the thumb of the operating hand.
  • Such safety devices are known for example from the aforementioned DE-GM 72 07 013 in itself.
  • the knife blade and loaded on train return spring are advantageously made of steel, whereas the housing shells, the slide and the expansion anchor made of plastic, whereby an inexpensive version of the knife in the form of a disposable knife can be guaranteed.
  • the blade 10 consists of a first housing shell 11 and a second housing shell 12 which form a grip body 13 with a knife-side end region 13a and a grip-side end region 13b, the knife blade 14 being held on the blade-side grip body region 13a.
  • both housing shells 11, 12 are each provided with an oval guide opening 15 for a slidingly guided therein actuating handle 16, which is materially connected to a slider 17.
  • the slider 17 consists of two mirrored to the housing longitudinal axis 18 and by means of one or more latching projections 19 and cooperating latching recesses 20 fauxklipsbaren slide elements 21, 22, between which the knife blade 14 is mounted on the latching projections 19.
  • Each of the slider elements 21, 22 is provided on both longitudinal sides of the blade 10, each with an actuating handle 16, so that this knife is suitable for both a right-handed and a left-handed.
  • the actuating handles 16 are provided on their outer side with a grippy, ribbed surface 16a or with a handle recess, not shown, for the thumb of the respective operating hand.
  • the slider 17 is provided at its handle-side end portion 13b of the handle body 13 facing end with a support projection 23 for the end to be angeganenkende 24a loaded on train spring 24, the other end 24b on the inside the first housing shell 11 is fixed to a projecting support pin 25 on the handle-side end portion 13b of the handle body 13.
  • the blade 10 can also be used as a safety knife find by the knife blade 14 under the action of this above-described spring 24 automatically retracted in non-actuation of the actuating handle 16 in the interior of the handle body 13.
  • a plurality of locking hooks 26 are arranged on the inner side 11 a of the first housing shell 11 in the edge region thereof as locking projections and are bonded to the inner wall 11 a of the first housing shell 11.
  • the second housing shell 12 is provided in its edge region with locking openings 27 and therein with undercut edges 28, in which the locking hooks 26 engage after their engagement in the locking hole 27 for a linear relative displacement of the two housing shells 11, 12 and the latter then have reached their locking position.
  • this linear displacement from the release position into the locking position always takes place in a relative to the longitudinal axis 18 relative displacement direction, e.g. at a fixed first housing shell 11 by a linear displacement of the second housing shell 12 in the direction of arrow 29 of Fig. 3.
  • To release the second housing shell 12 is moved in the direction of arrow 30 of Fig. 3 when releasing the first housing shell 11.
  • the locking hooks 26 engage behind the undercut edges 28 with a certain bias, resulting in a virtually joint-free Compression of the two housing shells 11, 12 leads to its separation plane 33 (see Fig. 2), which is parallel to the housing longitudinal axis 18.
  • the two housing shells 11, 12 can be connected to one another both by a detachable and by a non-detachable connecting element.
  • a detachable and by a non-detachable connecting element In order to make the knife in the illustrated case without a possible change of the knife blade 14 as a disposable knife 10, allowed Housing shells 11, 12 can not be detached from their connection nondestructively.
  • the invention provides as connecting element an expansion dowel 34 (see Figures 8 and 9), which is inserted into a provided on the handle-side end 13b of the handle body 13 opening 35. This opening 35 is provided with stepped ring edges 36 (see Fig.
  • the opening 35 consists of two partial openings 35a, 35b of the two handles 11, 12. In the locked state of the two handles 11, 12, the two partial openings 35a, 35b are aligned with each other congruent.
  • the first housing shell 11 is provided with a total of six locking hooks 26 which are evenly distributed on its inner side 11a in the edge region 40.
  • blade 10 can be used with the described expansion dowel 34 as a disposable knife, for example in the food industry.
  • the expansion anchor 34 need only be replaced by a releasable screw of the known type as a screw with mating thread or nut.
  • locking hooks 26 may not necessarily be provided in the first housing shell 11, but also in the second housing shell 12 and also the locking openings 27 may change from the second housing shell 12 to the first housing shell 11. A mixture of simultaneous arrangement of locking hooks 26 and locking openings 27 in both housing shells 11 or 12 is possible.
  • the locking hooks 26 and the locking openings 27 can also be arranged so that transversely to the housing longitudinal axis 18, the locking of the housing shells 11, 12 occurs in a linear relative displacement.
  • expansion dowel 34 or an equivalent to connecting element can be omitted if the undercut edges 28 and the locking hooks 26 at the end of their ramp surfaces 31, 32 with a snap-locking connection in the form of locking strips in one and latching recesses in the other ramp surface 31 or 32nd are provided.
  • a special feature of the knife 10 according to the invention is ultimately that the connecting element 34 is a sleeve-like component with an axial passage opening 44 serving as a suspension opening.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Description

Die Erfindung betrifft ein Messer gemäß dem Oberbegriff des Anspruchs 1. Ein bekanntes Messer dieser Art ist in der US 3,316, 635 oder in der US 5 099 578 A offenbart.The invention relates to a knife according to the preamble of claim 1. A known knife of this kind is in the US 3,316,635 or in the US 5 099 578 A disclosed.

Neben der US 3,316, 635 sind aus dem DE-GM 1 711 881 , aus dem DE-GM 94 17 085 U1 , aus der US-PS 2,679,100 und aus der EP 0 543 781 B1 weitere gattungsgemäße Messer bekannt geworden, deren Gehäusehälften jeweils durch eine mit einem Schraubendreher oder einer Münze zu betätigende Schlitzschraube verbunden werden, die mit ihrem Außengewinde in ein Innengewinde der jeweils anderen Gehäuseschale eingreift. Diese Messer verfügen indessen über keinen die Messerklinge aufnehmenden durch Federkraft rückzugbelastenden Schieber und können deshalb nicht als Sicherheitsmesser eingesetzt werden.In addition to the US 3,316,635 are from the DE-GM 1 711 881 , from the DE-GM 94 17 085 U1 , from the U.S. Patent 2,679,100 and from the EP 0 543 781 B1 Another generic knife has become known, the housing halves are each connected by a screwdriver or a coin to be operated with a slotted screw, which engages with its external thread in an internal thread of the other housing shell. However, these knives do not have a knife blade retracting by spring force rückzugbelastenden slide and therefore can not be used as a safety knife.

Allerdings sind aus der US-PS 4,139,939 und aus dem DE-GM 72 07 013 andere Messer bekannt geworden, deren Gehäuseschalen zwar gleichfalls mittels einer Schraubverbindung zusammengehalten werden müssen, die jedoch über einen mittels Federkraft rückzugsbelasteten Schieber verfügen, so dass ihre Messerklingen mittels des Schiebers innerhalb des Gehäuses durch eine aus dem Gehäuse herausragende Betätigungshandhabe verschoben und bei deren Loslassen von der Feder automatisch in das Gehäuse zurückgezogen werden können.However, are from the U.S. Patent 4,139,939 and from the DE-GM 72 07 013 Although other knives have become known, the housing shells must also be held together by means of a screw, but have a retracted by spring force slide, so that their knife blades moved by means of the slider within the housing by a projecting out of the housing actuating handle and their release from the Spring can be automatically withdrawn into the housing.

Sämtliche der vorbekannten Messer sind mit dem Nachteil behaftet, dass sie sich aufgrund ihrer kostspieligen Konstruktion sowie der lösbaren Zusammenfügung ihrer Gehäuseschalen als Einwegmesser beim Öffnen von Gebinden in der Lebensmittelindustrie nicht eignen. Denn von der Lebensmittelindustrie wird ein Klingenwechsel häufig mit der Befürchtung abgelehnt, dass bei diesem Vorgang unversehens eine gebrauchte - oder auch eine neue - Messerklinge in die Verarbeitungslinie mit den entsprechend fatalen Folgen hineingelangen könnte.All of the known knives suffer from the disadvantage that they are not suitable as a disposable knife when opening containers in the food industry due to their costly construction and the detachable assembly of their housing shells. Because of the food industry, a blade change is often rejected with the fear that at Unexpectedly, a used - or even a new - knife blade could get into the processing line with the corresponding fatal consequences.

Von diesem nächstkommenden Stand der Technik ausgehend, liegt der Erfindung die Aufgabe zugrunde, ein Messer der eingangs genannten Gattung zu schaffen, welches sich sowohl als Einwegmesser für die Lebensmittelindustrie als auch als preiswertes Messer für einen Klingenwechsel eignet und gleichwohl eine sichere Verriegelung der beiden Gehäuseschalen gewährleistet.Starting from this closest prior art, the invention has for its object to provide a knife of the type mentioned, which is suitable both as a disposable knife for the food industry and as a cheap knife for a blade change and nevertheless ensures a secure locking of the two housing shells ,

Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffs des Anspruchs 1 entsprechend dessen kennzeichnenden Merkmalen dadurch gelöst, dass auf der Innenseite der ersten Gehäuseschale in deren Randbereich mehrere Verriegelungshaken als Verriegelungsvorsprünge angeordnet sind, die in Verriegelungsposition in im Randbereich der zweiten Gehäuseschale vorgesehene, je eine Hinterschnittkante aufweisende Verriegelungsöffnungen als Verriegelungsrücksprünge eingreifen und nach einer linearen Relativbewegung der ersten zur zweiten Gehäuseschale entweder in der Gehäuselängsachse oder quer dazu die Hinterschnittkanten der Verriegelungsöffnungen untergreifen, und dass das Verbindungselement werkzeuglos in die beide Gehäuseschalen durchsetzende Öffnung einsetzbar ist.This object is achieved in conjunction with the features of the preamble of claim 1 according to the characterizing features in that a plurality of locking hooks are arranged as locking projections on the inside of the first housing shell in the edge region, which provided in the locking position in the edge region of the second housing shell, one each Undercut edge having locking openings engage as locking recesses and engage under a linear relative movement of the first housing shell either in the housing longitudinal axis or transversely to the undercut edges of the locking holes, and that the connecting element without tools in the two housing shells passing through opening can be used.

Durch die hakenförmige Ausbildung der Verriegelungsvorsprünge in Verbindung mit den Verriegelungsöffnungen mit ihren Hinterschnittkanten in den jeweiligen Randbereichen der beiden Gehäuseschalen wird ein preiswert herstellbares Messer mit einem praktisch fugenfreien Griffkörper sowie mit einer sicher darin gehalterten Messerklinge geschaffen, wobei das Verbindungselement an jedem, die verschiebbare Klinge nicht störenden Bereich des Gehäuses angeordnet werden kann, was im vorliegenden Fall ohne weiteres am griffseitigen Endbereich des Griffkörpers möglich ist. In vorteilhafter Weise wird das Verbindungselement werkzeuglos in die Öffnung eingesetzt, welche beide Gehäuseschalen durchdringt. Dabei können die Verriegelungshaken sowie die Verriegelungsöffnungen mit ihren Hinterschnittkanten sowohl in einer parallel zur Gehäuselängsachse als auch quer dazu verlaufenden, in jedem Fall linearen Verschieberichtung in ihre Verriegelungsposition gebracht werden. Auch ist eine preiswerte Herstellung der beiden Gehäuseschalen aus Kunststoff ohne weiteres möglich.Due to the hook-shaped design of the locking projections in conjunction with the locking openings with their undercut edges in the respective edge regions of the two housing shells an inexpensive producible knife with a virtually joint-free handle body and a sure held Erten knife blade is created, wherein the connecting element at each, the sliding blade not disturbing region of the housing can be arranged, which is readily possible in the present case on the handle-side end portion of the handle body. Advantageously, the connecting element is used without tools in the opening, both Housing shells penetrates. The locking hooks and the locking openings can be brought with their undercut edges both in a direction parallel to the housing longitudinal axis and transversely thereto, in any case linear displacement direction in its locking position. Also, an inexpensive production of the two housing shells made of plastic is readily possible.

Nach einer vorteilhaften Weiterbildung der Erfindung hintergreifen die Verriegelungshaken die Hinterschnittkanten der Verriegelungsöffnungen durch Vorsehung von abgeschrägten, keilförmigen Auflaufflächen mit einer gewissen Vorspannung. Dadurch können die beiden Gehäuseschalen praktisch fugenfrei werkzeuglos zusammengefügt werden.According to an advantageous embodiment of the invention, the locking hook engage behind the undercut edges of the locking openings by providing beveled, wedge-shaped ramp surfaces with a certain bias. As a result, the two housing shells can be joined virtually without tools without tools.

Selbst ohne Verbindungselement können die Gehäuseschalen so bei entsprechender Gestaltung der keilförmigen Auflauffläche von Verriegelungshaken und Hinterschnittkanten unter einer entsprechend bemessenen Vorspannung verbunden bleiben.Even without a connecting element, the housing shells can remain connected with appropriate design of the wedge-shaped ramp surface of locking hook and undercut edges under a suitably sized bias.

Eine vorteilhafte Ausgestaltung besteht entsprechend der Erfindung darin, dass die Öffnung zur Aufnahme des Verbindungselements an dem der Messerklinge abgewandten griffseitigen Endbereich des Griffkörpers angeordnet ist. Diese Ausbildung ist insbesondere dann sinnvoll, wenn entsprechend anderen Erfindungsmerkmalen das Verbindungselement ein hülsenartiges Bauteil mit einer als Aufhängeöffnung dienenden axialen Durchgangsöffnung ist.An advantageous embodiment according to the invention is that the opening for receiving the connecting element is arranged on the handle blade side remote from the handle blade end portion of the handle body. This training is particularly useful if according to other features of the invention, the connecting element is a sleeve-like component with a serving as a suspension opening axial passage opening.

Vorteilhaft besteht das Verbindungselement aus einem die Öffnung in den beiden Gehäuseschalen mit federnden Rastzungen durchgreifenden Spreizdübel, wobei die Öffnung eine Durchgangsöffnung ist, die aus zwei miteinander ausgerichteten Teilöffnungen der beiden Gehäuseschalen besteht. Dieser Spreizdübel kann an jeder beliebigen Stelle des Griffkörpers, bei einem Messer mit einem Schieber z.B. am handgriffseitigen Endbereich des Griffkörpers, angeordnet werden.Advantageously, the connecting element consists of an opening in the two housing shells with resilient latching tongues extending through expansion dowel, wherein the opening is a passage opening, which consists of two mutually aligned partial openings of the two housing shells. This expansion anchor can at any point of the handle body, at a Knife with a slider, for example, on the handle-side end portion of the handle body, are arranged.

Nach einer vorteilhaften Weiterbildung der Erfindung durchgreift der Spreizdübel die beiden Gehäuseschalen unlösbar am handgriffseitigen Endbereich des Griffkörpers in der Durchgangsöffnung. Diese Ausführungsform ist als Einwegmesser, insbesondere für die Lebensmittelindustrie geeignet, weil ein Klingenwechsel aufgrund des unlösbaren Einsatzes des Spreizdübels nur durch seine Zerstörung möglich ist und ein zweiter passender Spreizdübel nicht zur Verfügung steht.According to an advantageous embodiment of the invention, the expansion dowel passes through the two housing shells inextricably on the handle side end portion of the handle body in the passage opening. This embodiment is suitable as a disposable knife, in particular for the food industry, because a blade change due to the insoluble use of the expansion anchor is only possible by its destruction and a second matching expansion dowel is not available.

Nach einer besonders vorteilhaften Weiterbildung der Erfindung sind auf der Innenseite der Gehäuseschalen Führungsflächen für einen Schieber mit der daran zu halternden Messerklinge sowie ein in einer ovalen Längsöffnung mindestens einer Gehäuseschale geführtes, mit dem Schieber fest verbundenes Betätigungselement angeordnet.According to a particularly advantageous development of the invention, guide surfaces for a slide with the knife blade to be held thereon are arranged on the inside of the housing shells, and an actuating element which is guided in an oval longitudinal opening of at least one housing shell and firmly connected to the slide.

Vorteilhaft besteht der Schieber aus zwei zur Gehäuselängsachse spiegelbildlich ausgebildeten und mittels Rastvor- und -rücksprüngen zusammenklipsbaren Schieberelementen, wobei auf jeder Längsseite des Schiebers in jeder Gehäuseschale ein in einer ovalen Längsöffnung geführtes Betätigungselement für einen Links- und einen Rechtshänder vorgesehen ist.Advantageously, the slider consists of two mirror-inverted to the housing longitudinal axis and by means of Rastvor- and recesses zusammenklipsbaren slider elements, wherein on each longitudinal side of the slider in each housing shell a guided in an oval longitudinal opening actuator for a left and a right-handed is provided.

Um dieses mit einem Schieber versehene Messer auch als Sicherheitsmesser auszubilden, ist in vorteilhafter Weiterbildung der Erfindung an dem der Handgriffseite des Griffkörpers zugekehrten Ende des Schiebers ein Ende einer auf Zug belasteten Feder angelenkt, deren anderes Ende auf der Innenseite einer der Gehäuseschalen an einem vorspringenden Halterungsstift am griffseitigen Ende des Griffkörpers festgesetzt ist. Da beim Ausschieben der Messerklinge aus dem Griffkörper mittels der Betätigungshandhabe die vorbeschriebene Feder unter eine Vorspannung gesetzt wird, erfolgt beim Abgleiten des Daumens der Bedienungshand von der Betätigungshandhabe ein automatischer Einzug der Messerklinge in das Gehäuse. Die Betätigungshandhabe ist vorteilhaft mit einer ergonomisch günstig ausgebildeten geriffelten oder kalottenförmigen Angriffsfläche für den Daumen der Bedienungshand versehen. Derartige Sicherheitseinrichtungen sind beispielsweise aus dem vorgenannten DE-GM 72 07 013 an sich bekannt.To form this provided with a slide knife as a safety knife, one end of a spring loaded on train is articulated in an advantageous development of the invention to the handle side of the handle body facing the end of the slider, the other end on the inside of one of the housing shells on a projecting retaining pin is set at the handle end of the handle body. Since when pushing out the knife blade from the handle body by means of the actuating handle, the above-described spring is placed under a bias, takes place when sliding the thumb of the operating hand of the actuating handle an automatic Insertion of the knife blade into the housing. The actuating handle is advantageously provided with an ergonomically designed corrugated or dome-shaped attack surface for the thumb of the operating hand. Such safety devices are known for example from the aforementioned DE-GM 72 07 013 in itself.

Die Messerklinge und die auf Zug belastete Rückholfeder werden vorteilhaft aus Stahl, hingegen die Gehäuseschalen, der Schieber und der Spreizdübel aus Kunststoff hergestellt, wodurch eine preiswerte Ausführung des Messers in Form eines Einwegmessers gewährleistet werden kann.The knife blade and loaded on train return spring are advantageously made of steel, whereas the housing shells, the slide and the expansion anchor made of plastic, whereby an inexpensive version of the knife in the form of a disposable knife can be guaranteed.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt. Dabei zeigen:

  • Fig. 1 eine Längsseitenansicht des Messers in arretierter Position der beiden Gehäuseschalen mit der mittels eines Schiebers und einer Betätigungshandhabe aus dem Gehäuse ausgefahrenen Messerklinge,
  • Fig. 2 die Draufsicht in Richtung des Pfeiles II von Fig. 1,
  • Fig. 3 die Schnittansicht entlang der Linie III-III von Fig. 1,
  • Fig. 4 die Schnittansicht entlang der Linie IV-IV von Fig. 1,
  • Fig. 5 die Ansicht auf den messerseitigen Endbereich des Griffkörpers in Richtung des Pfeiles V von Fig. 1,
  • Fig. 6 eine perspektivische Ansicht der anderen Längsseite des Messers von Fig. 1,
  • Fig. 7 die perspektivische Ansicht der Messerlängsseite von Fig. 1,
  • Fig. 8 die Explosionsansicht des Messers von Fig. 6 und
  • Fig. 9 die Explosionsansicht des Messers von Fig. 7.
An embodiment of the invention is shown in the drawings. Showing:
  • 1 is a longitudinal side view of the knife in the locked position of the two housing shells with the extended by means of a slider and an actuating handle from the housing knife blade,
  • 2 is a plan view in the direction of arrow II of Fig. 1,
  • 3 is the sectional view taken along the line III-III of Fig. 1,
  • 4 is a sectional view taken along the line IV-IV of Fig. 1,
  • 5 is the view of the knife-side end portion of the handle body in the direction of arrow V of Fig. 1,
  • 6 is a perspective view of the other longitudinal side of the knife of Fig. 1,
  • 7 is a perspective view of the knife longitudinal side of Fig. 1,
  • Fig. 8 is an exploded view of the knife of Fig. 6 and
  • 9 shows the exploded view of the knife of FIG. 7.

Gemäß den Figuren 1 bis 4 besteht das Messer 10 aus einer ersten Gehäuseschale 11 und einer zweiten Gehäuseschale 12, die einen Griffkörper 13 mit einem messerseitigen Endbereich 13a und einem griffseitigen Endbereich 13b bilden, wobei an dem messerseitigen Griffkörperbereich 13a die Messerklinge 14 gehaltert ist. Am messerseitigen Endbereich 13a sind beide Gehäuseschalen 11, 12 mit je einer ovalen Führungsöffnung 15 für eine darin gleitverschieblich geführte Betätigungshandhabe 16 versehen, die mit einem Schieber 17 stoffschlüssig verbunden ist. Wie aus Fig. 4 zu entnehmen ist, besteht der Schieber 17 aus zwei zur Gehäuselängsachse 18 spiegelbildlich ausgebildeten und mittels einer oder mehrerer Rastvorsprünge 19 und damit zusammenwirkender Rastrücksprünge 20 zusammenklipsbaren Schieberelementen 21, 22, zwischen denen die Messerklinge 14 an den Rastvorsprüngen 19 gehaltert ist.According to FIGS. 1 to 4, the blade 10 consists of a first housing shell 11 and a second housing shell 12 which form a grip body 13 with a knife-side end region 13a and a grip-side end region 13b, the knife blade 14 being held on the blade-side grip body region 13a. At the knife-side end portion 13a both housing shells 11, 12 are each provided with an oval guide opening 15 for a slidingly guided therein actuating handle 16, which is materially connected to a slider 17. As can be seen from Fig. 4, the slider 17 consists of two mirrored to the housing longitudinal axis 18 and by means of one or more latching projections 19 and cooperating latching recesses 20 zusammenklipsbaren slide elements 21, 22, between which the knife blade 14 is mounted on the latching projections 19.

Jedes der Schieberelemente 21, 22 ist auf beiden Längsseiten des Messers 10 mit je einer Betätigungshandhabe 16 versehen, so dass dieses Messer sowohl für einen Rechts- als auch für einen Linkshänder geeignet ist. Die Betätigungshandhaben 16 sind an ihrer Außenseite mit einer griffigen, geriffelten Oberfläche 16a oder mit einer nicht dargestellten Griffmulde für den Daumen der jeweiligen Bedienungshand versehen.Each of the slider elements 21, 22 is provided on both longitudinal sides of the blade 10, each with an actuating handle 16, so that this knife is suitable for both a right-handed and a left-handed. The actuating handles 16 are provided on their outer side with a grippy, ribbed surface 16a or with a handle recess, not shown, for the thumb of the respective operating hand.

Wie am anschaulichsten aus Fig. 4 entnommen werden kann, ist der Schieber 17 an seinem dem griffseitigen Endbereich 13b des Griffkörpers 13 zugekehrten Ende mit einem Halterungsvorsprung 23 für das anzulenkende Ende 24a einer auf Zug belasteten Feder 24 ausgestattet, deren anderes Ende 24b auf der Innenseite der ersten Gehäuseschale 11 an einem vorspringenden Halterungsstift 25 am griffseitigen Endbereich 13b des Griffkörpers 13 festgesetzt ist. Dadurch kann das Messer 10 auch als Sicherheitsmesser Verwendung finden, indem die Messerklinge 14 unter Wirkung dieser vorbeschriebenen Feder 24 automatisch bei Nichtbetätigung der Betätigungshandhaben 16 stets in den Innenraum des Griffkörpers 13 eingezogen wird.As can be seen most clearly from Fig. 4, the slider 17 is provided at its handle-side end portion 13b of the handle body 13 facing end with a support projection 23 for the end to be angeganenkende 24a loaded on train spring 24, the other end 24b on the inside the first housing shell 11 is fixed to a projecting support pin 25 on the handle-side end portion 13b of the handle body 13. As a result, the blade 10 can also be used as a safety knife find by the knife blade 14 under the action of this above-described spring 24 automatically retracted in non-actuation of the actuating handle 16 in the interior of the handle body 13.

Wie am deutlichsten aus Fig. 3 ersichtlich ist, sind auf der Innenseite 11a der ersten Gehäuseschale 11 in deren Randbereich mehrere Verriegelungshaken 26 als Verriegelungsvorsprünge angeordnet und stoffschlüssig mit der Innenwand 11 a der ersten Gehäuseschale 11 verbunden. Die zweite Gehäuseschale 12 ist in ihrem Randbereich mit Verriegelungsöffnungen 27 und darin mit Hinterschnittkanten 28 versehen, in welche die Verriegelungshaken 26 nach ihrem Eingriff in die Verriegelungsöffnung 27 nach einer linearen Relativverschiebung der beiden Gehäuseschalen 11, 12 eingreifen und letztere dann ihre Verriegelungsposition erreicht haben.As can be seen most clearly from FIG. 3, a plurality of locking hooks 26 are arranged on the inner side 11 a of the first housing shell 11 in the edge region thereof as locking projections and are bonded to the inner wall 11 a of the first housing shell 11. The second housing shell 12 is provided in its edge region with locking openings 27 and therein with undercut edges 28, in which the locking hooks 26 engage after their engagement in the locking hole 27 for a linear relative displacement of the two housing shells 11, 12 and the latter then have reached their locking position.

In dem dargestellten Ausführungsbeispiel erfolgt diese lineare Verschiebung aus der Loslage in die Verriegelungsposition stets in einer zur Längsachse 18 parallelen, relativen Verschieberichtung, z.B. bei festgehaltener erster Gehäuseschale 11 durch eine lineare Verschiebung der zweiten Gehäuseschale 12 in Richtung des Pfeiles 29 von Fig. 3. Zum Lösen wird bei festgehaltener erster Gehäuseschale 11 die zweite Gehäuseschale 12 in Richtung des Pfeiles 30 von Fig. 3 verschoben. Durch Vorsehung von abgeschrägten, keilförmigen Auflaufflächen 31 auf den Hinterschnittkanten (s. Fig. 3) und 32 an der Unterseite der Verriegelungshaken 26 (s. Fig. 8) hintergreifen die Verriegelungshaken 26 die Hinterschnittkanten 28 mit einer gewissen Vorspannung, die zu einer praktisch fugenfreien Zusammenpressung der beiden Gehäuseschalen 11, 12 an ihrer Trennungsebene 33 führt (s. Fig. 2), die parallel zur Gehäuselängsachse 18 verläuft.In the illustrated embodiment, this linear displacement from the release position into the locking position always takes place in a relative to the longitudinal axis 18 relative displacement direction, e.g. at a fixed first housing shell 11 by a linear displacement of the second housing shell 12 in the direction of arrow 29 of Fig. 3. To release the second housing shell 12 is moved in the direction of arrow 30 of Fig. 3 when releasing the first housing shell 11. By providing chamfered, wedge-shaped ramp surfaces 31 on the undercut edges (see Fig. 3) and 32 on the underside of the locking hooks 26 (see Fig. 8), the locking hooks 26 engage behind the undercut edges 28 with a certain bias, resulting in a virtually joint-free Compression of the two housing shells 11, 12 leads to its separation plane 33 (see Fig. 2), which is parallel to the housing longitudinal axis 18.

Grundsätzlich können die beiden Gehäuseschalen 11, 12 sowohl durch ein lösbares als auch durch ein unlösbares Verbindungselement miteinander verbunden werden. Um das Messer im dargestellten Fall ohne möglichen Wechsel der Messerklinge 14 als Einwegmesser 10 zu gestalten, dürfen die Gehäuseschalen 11, 12 nicht zerstörungsfrei aus ihrer Verbindung gelöst werden können. Zu diesem Zweck sieht die Erfindung als Verbindungselement einen Spreizdübel 34 vor (s. Figuren 8 und 9), der in eine am griffseitigen Ende 13b des Griffkörpers 13 vorgesehene Öffnung 35 eingefügt ist. Diese Öffnung 35 ist mit abgesetzten Ringkanten 36 (s. Fig. 4) in jeder der beiden Gehäuseschalen 11, 12 versehen, in welche auf der einen Seite, hier auf der Seite der Gehäuseschale 11, der Spreizdübel 34 mit einem Kreisringflansch 37 formschlüssig eingefügt wird, wohingegen er auf der anderen Seite der Gehäuseschale 12 der Spreizdübel 34 mit seinen Spreizzähnen 38 federelastisch mit einem Teilkreisflansch 39 in die abgesetzte Ringkante 36 eingreift. Durch diesen Passsitz gemäß Fig. 4 wird deutlich, dass der Spreizdübel 34 nicht mehr zerstörungsfrei aus der Öffnung 35 gelöst werden kann, weil er mit den Außenflächen der Griffschalen 11, 12 bündig abschließt und somit keine Angriffsfläche für seine Herausnahme bietet.In principle, the two housing shells 11, 12 can be connected to one another both by a detachable and by a non-detachable connecting element. In order to make the knife in the illustrated case without a possible change of the knife blade 14 as a disposable knife 10, allowed Housing shells 11, 12 can not be detached from their connection nondestructively. For this purpose, the invention provides as connecting element an expansion dowel 34 (see Figures 8 and 9), which is inserted into a provided on the handle-side end 13b of the handle body 13 opening 35. This opening 35 is provided with stepped ring edges 36 (see Fig. 4) in each of the two housing shells 11, 12, in which on one side, here on the side of the housing shell 11, the expansion dowel 34 is positively inserted with a circular flange 37 whereas on the other side of the housing shell 12 of the expansion dowel 34 it resiliently engages with its spreader teeth 38 with a part-circle flange 39 in the offset annular edge 36. 4, it is clear that the expansion dowel 34 can no longer be released from the opening 35 in a non-destructive manner, because it is flush with the outer surfaces of the handle shells 11, 12 and thus offers no attack surface for its removal.

Die Öffnung 35 besteht aus zwei Teilöffnungen 35a, 35b der beiden Griffschalen 11, 12. Im gegeneinander arretierten Zustand der beiden Griffschalen 11, 12 sind auch die beiden Teilöffnungen 35a, 35b zueinander deckungsgleich ausgerichtet.The opening 35 consists of two partial openings 35a, 35b of the two handles 11, 12. In the locked state of the two handles 11, 12, the two partial openings 35a, 35b are aligned with each other congruent.

In den Figuren 5 bis 7 sind mit den Figuren 1 bis 4 übereinstimmende Teile mit gleichen Bezugsziffern bezeichnet. Aus Fig. 1 in Verbindung mit den Figuren 5, 6 und 7 geht hervor, dass sich die Verriegelungshaken 26 im Randbereich 40 der ersten Gehäuseschale 11 und kongruent dazu die Verriegelungsöffnungen 27 mit ihren Hinterschnittkanten 28 im Randbereich 41 der zweiten Gehäuseschale 12 befinden (s. Figuren 6 und 7).In the figures 5 to 7 with the figures 1 to 4 matching parts are designated by like reference numerals. From Fig. 1 in conjunction with Figures 5, 6 and 7 shows that the locking hooks 26 in the edge region 40 of the first housing shell 11 and congruent thereto the locking openings 27 with their undercut edges 28 in the edge region 41 of the second housing shell 12 are located (s. FIGS. 6 and 7).

Aus den Explosionsansichten der Figuren 8 und 9 wird verdeutlicht, dass die erste Gehäuseschale 11 mit insgesamt sechs Verriegelungshaken 26 versehen ist, die gleichmäßig auf ihrer Innenseite 11a im Randbereich 40 verteilt sind.From the exploded views of Figures 8 and 9 it is illustrated that the first housing shell 11 is provided with a total of six locking hooks 26 which are evenly distributed on its inner side 11a in the edge region 40.

Ebenso wird deutlich, dass in der zweiten Gehäuseschale 12 (s. Fig. 9) sechs Verriegelungsöffnungen 27 mit ihren Hinterschnittkanten 28 im Randbereich 41 vorgesehen sind. Die Rückholfeder 24 von Fig. 4, die zwar vorgesehen werden kann, aber nicht muss, fehlt in den Explosionsansichten der Figuren 8 und 9. Wenn auch der Schieber 17 mit seinen beiden zusammenklipsbaren Schieberelementen 21, 22 entbehrlich werden sollte, weil eine Verschiebung der Messerklinge 14 nicht gewünscht ist, kann auch die ovale Längsöffnung 15 entfallen und darin eine Griffmulde, sei es geriffelt - wie dargestellt - oder durch einen kalottenartigen Rücksprung ersetzt werden. In diesem Fall versteht es sich, dass die Öffnung 35 mit dem eingesetzten Spreizdübel 34 auch durchaus an anderer Stelle, beispielsweise im Mittenbereich des Messers 10, angeordnet werden kann, weil der Schieber und der dafür vorzusehende Freiraum entfällt.It likewise becomes clear that in the second housing shell 12 (see Fig. 9) six locking openings 27 are provided with their undercut edges 28 in the edge region 41. The return spring 24 of Fig. 4, which may be provided, but need not, is absent in the exploded views of Figures 8 and 9. Although the slider 17 with its two zusammenklipsbaren slide elements 21, 22 should be dispensable, because a displacement of the knife blade 14 is not desired, and the oval longitudinal opening 15 can be omitted and therein a recessed grip, be it fluted - as shown - or replaced by a dome-shaped recess. In this case, it is understood that the opening 35 with the expansible plug 34 inserted can also be arranged at a different location, for example in the middle area of the blade 10, because the slide and the free space to be provided for it are eliminated.

Aus den Figuren 8 und 9 ist auch entnehmbar, dass die Schieberelemente 21, 22 mit der jeweils ihnen zugewandten Gehäuseschale 11, 12 an den entsprechenden Führungsflächen 42 im Gehäuseteil 12 für das Schieberelement 22 (s. Fig. 9) und an Führungsflächen 43 auf der Innenfläche 11a der ersten Gehäuseschale 11 (s. Fig. 8) für das Schieberelement 21 vorgesehen sind.It can also be seen from Figures 8 and 9 that the slide elements 21, 22 with the respectively facing housing shell 11, 12 on the corresponding guide surfaces 42 in the housing part 12 for the slide element 22 (s. Fig. 9) and on guide surfaces 43 on the Inner surface 11a of the first housing shell 11 (see Fig. 8) are provided for the slider element 21.

Es versteht sich, dass das vorbeschriebene Messer 10 mit dem beschriebenen Spreizdübel 34 als Einwegmesser, beispielsweise in der Lebensmittelindustrie, verwendet werden kann.It is understood that the above-described blade 10 can be used with the described expansion dowel 34 as a disposable knife, for example in the food industry.

Soll es jedoch ais ein Messer 10 mit einem durchführbaren Wechsel der Messerklinge 14 gestaltet werden, braucht der Spreizdübel 34 lediglich durch ein lösbares Schraubelement der bekannten Art als Schraube mit Gegengewinde oder mit Mutter ersetzt zu werden.However, if it is designed as a knife 10 with a feasible change of the knife blade 14, the expansion anchor 34 need only be replaced by a releasable screw of the known type as a screw with mating thread or nut.

Durch eine Herstellung der Messerklinge 14 und der auf Zug belasteten Rückholfeder 24 aus Stahl, hingegen die Herstellung der Gehäuseschalen 11, 12, der Schieber 17, 21, 22 und des Spreizdübels 34 aus Kunststoff kann ein für sämtliche Verwendungszwecke preiswertes Messers 10 geschaffen werden.By making the knife blade 14 and loaded on train return spring 24 made of steel, however, the preparation of the housing shells 11, 12, the slide 17, 21, 22 and the expansion anchor 34 made of plastic can be created for all purposes inexpensive knife 10.

Es versteht sich, dass die Verriegelungshaken 26 nicht unbedingt in der ersten Gehäuseschale 11, sondern auch in der zweiten Gehäuseschale 12 vorgesehen werden können und ebenso auch die Verriegelungsöffnungen 27 von der zweiten Gehäuseschale 12 zur ersten Gehäuseschale 11 wechseln können. Auch eine Mischung aus gleichzeitiger Anordnung von Verriegelungshaken 26 und Verriegelungsöffnungen 27 in beiden Gehäuseschalen 11 oder 12 ist möglich.It is understood that the locking hooks 26 may not necessarily be provided in the first housing shell 11, but also in the second housing shell 12 and also the locking openings 27 may change from the second housing shell 12 to the first housing shell 11. A mixture of simultaneous arrangement of locking hooks 26 and locking openings 27 in both housing shells 11 or 12 is possible.

Weiterhin können die Verriegelungshaken 26 und die Verriegelungsöffnungen 27 auch so angeordnet werden, dass bei einer linearen Relativverschiebung quer zur Gehäuselängsachse 18 die Verriegelung der Gehäuseschalen 11, 12 eintritt.Furthermore, the locking hooks 26 and the locking openings 27 can also be arranged so that transversely to the housing longitudinal axis 18, the locking of the housing shells 11, 12 occurs in a linear relative displacement.

Und schließlich kann der Spreizdübel 34 oder ein dazu äquivalentes Verbindungselement dann entfallen, wenn die Hinterschnittkanten 28 und die Verriegelungshaken 26 am Ende ihrer Auflaufflächen 31, 32 mit einer Schnapp-Rastverbindung in Form von Rastleisten in der einen und Rastvertiefungen in der anderen Auflauffläche 31 oder 32 versehen sind.And finally, the expansion dowel 34 or an equivalent to connecting element can be omitted if the undercut edges 28 and the locking hooks 26 at the end of their ramp surfaces 31, 32 with a snap-locking connection in the form of locking strips in one and latching recesses in the other ramp surface 31 or 32nd are provided.

Eine Besonderheit des erfindungsgemäßen Messers 10 besteht letztlich darin, dass das Verbindungselement 34 ein hülsenartiges Bauteil mit einer als Aufhängeöffnung dienenden axialen Durchgangsöffnung 44 ist.A special feature of the knife 10 according to the invention is ultimately that the connecting element 34 is a sleeve-like component with an axial passage opening 44 serving as a suspension opening.

Claims (12)

  1. Knife (10) with a housing comprising two housing shells (11, 12) assembled to form a handle body (13) with a knife blade (14) retained in between as well as latch projections (26) in the first (11) and co-operating latch indentations (27) in the second housing shell (12), which are secured to one another by a connecting element (34) which can be inserted transversely to the housing longitudinal axis (18) from outside through an orifice (35) of the housing (13) once they have been latched and which can be inserted in the orifice (35) extending through the two housing shells (11, 12) without tools; characterised in that several latch hooks (26) in the form of latch projections are provided on the internal face (11a) of the first housing shell (11) in its peripheral region which locate in latch orifices (27) in the form of latch indentations, each with an undercut edge (28), disposed in the peripheral region of the second housing shell (12) in the locked position, and locate round the undercut edges (28) of the latch orifices (27) either in the housing longitudinal axis (18) or transversely thereto following a linear movement of the first (11) relative to the second housing shell (12).
  2. Knife as claimed in claim 1, characterised in that the latch hooks (26) locate round the undercut edges (28) of the latch orifices (27) by providing oblique, wedge-shaped ramp surfaces (31, 32) with a certain degree of pre-tensioning.
  3. Knife as claimed in claim 1 or claim 2, characterised in that the orifice (35) for accommodating the connecting element (34) is disposed on the handle-side end region (13b) of the handle body (13) remote from the knife blade (14).
  4. Knife as claimed in claim 3, characterised in that the connecting element (34) is a sleeve-type component with an axial end-to-end orifice (44) serving has a hanging orifice.
  5. Knife as claimed in one of claims 1 to 4, characterised in that the connecting element comprises an expanding dowel pin (34) with resilient catch lugs (38) extending through the orifice (35) in the two housing shells (11, 12) and the orifice (35) is an end-to-end orifice comprising two part-orifices (35a, 35b) of the two housing shells (11, 12) oriented congruently with one another.
  6. Knife as claimed in claim 5, characterised in that the expanding dowel pin (34) is non-releasably secured on indentations (36) in the end-to-end orifice (35) of the two housing shells (11, 12).
  7. Knife as claimed in one of claims 1 to 6, characterised in that guide surfaces for a slide (17) with the knife blade (14) to be retained on it are provided on the internal face (11a, 12a) of the housing shells (11, 12), as well as an operating element (16) guided in an oval slot (15) of at least one housing shell (11, 12) to which the slide (17) is fixedly connected.
  8. Knife as claimed in claim 7, characterised in that the slide (17) comprises two slide elements (21, 22) disposed in mirror image with respect to the housing longitudinal axis (18) which can be snap-fitted together by means of catch projections and indentations (19, 20), and an operating element (16) is provided in each oval slot (15) on each longitudinal face of the slide (17) in each housing shell (11, 12) for a left-handed or right-handed person.
  9. Knife as claimed in one of claims 1 to 8, characterised in that one end (24a) of a tensioned return spring (24) is linked to the end of the slide (17) facing the handle end (13b) of the handle body (13), the other end (24b) of which is secured to the internal face (11a, 12a) of one of the housing shells (11, 12) on a projecting retaining pin (25) on the handle-side end (13b) of the handle body (13).
  10. Knife as claimed in one of claims 1 to 9, characterised in that the knife blade (14) and the tensioned return spring (24) are made from steel, whilst the housing shells (11, 12), the slides (17, 21, 22) and the expanding dowel pin (34) are made from plastic.
  11. Knife (10) with a housing comprising two housing shells (11, 12) assembled to form a handle body (13) with a knife blade (14) retained in between, as well as latch projections (26) in the first (11) and co-operating latch indentations (27) in the second housing shell (12), characterised in that several latch hooks (26) in the form of latch projections are provided on the internal face (11a) of the first housing shell (11) in its peripheral region which locate in latch orifices (27) in the form of latch indentations, each with an undercut edge (28), provided in the peripheral region of the second housing shell (12) in the latched position and which locate round the undercut edges (28) of the latch orifices (27) either in the housing longitudinal axis (18) or transversely thereto following a linear movement of the first (11) relative to the second housing shell (12), and the latch hooks (26) locate round undercut edges (28) of the lock orifices (27) by providing oblique, wedge-shaped ramp surfaces (31, 32) with a certain degree of pre-tensioning, and the undercut edges (28) and the latch hooks (26) are provided with a snap-fit catch connection in the form of catch strips in the one and catch recesses in the other ramp surface (31, 32) at the end of their ramp surfaces (31, 32).
  12. Knife as claimed in claim 11, characterised in that the snap-fit catch connection comprises catch strips in the one and catch recesses in the other ramp surface (31, 32).
EP04010250A 2003-05-22 2004-04-30 Knife Expired - Lifetime EP1479487B1 (en)

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Also Published As

Publication number Publication date
US20040250426A1 (en) 2004-12-16
ES2291769T3 (en) 2008-03-01
US6907668B2 (en) 2005-06-21
AU2004202212A1 (en) 2004-12-09
EP1479487A1 (en) 2004-11-24
AU2004202212B2 (en) 2008-11-06
DE502004004920D1 (en) 2007-10-25
DE10323760A1 (en) 2004-12-16

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