EP2505320B1 - Blade with a metallic end cap - Google Patents

Blade with a metallic end cap Download PDF

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Publication number
EP2505320B1
EP2505320B1 EP12001958.3A EP12001958A EP2505320B1 EP 2505320 B1 EP2505320 B1 EP 2505320B1 EP 12001958 A EP12001958 A EP 12001958A EP 2505320 B1 EP2505320 B1 EP 2505320B1
Authority
EP
European Patent Office
Prior art keywords
opening
plastic
tenon
end cap
grip
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.)
Active
Application number
EP12001958.3A
Other languages
German (de)
French (fr)
Other versions
EP2505320A1 (en
Inventor
Thomas Kreitz
Paul Boldt
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.)
Zwilling JA Henckels AG
Original Assignee
Zwilling JA Henckels 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.)
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Publication of EP2505320A1 publication Critical patent/EP2505320A1/en
Application granted granted Critical
Publication of EP2505320B1 publication Critical patent/EP2505320B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B3/00—Hand knives with fixed blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B3/00—Hand knives with fixed blades
    • B26B3/02—Table-knives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part

Definitions

  • the invention relates to a knife with a metal blade and an integrally formed on the blade Erl, which carries as a flat iron, the handle made of plastic, wherein at the end of the handle a metal end cap is attached.
  • the object of the invention is to attach the metal end cap in a knife of the type mentioned in a safe and easy way especially safe to install and reproducible and this to allow rapid processing of the knife. Also, the exact rotational position of the end cap should be ensured.
  • End cap has a molded pin which rests positively in the opening, that the pin has at its end facing the Erlende a recess in particular a transverse slot with which he engages the Erlende form-fitting manner and that the pin has projections laterally.
  • the opening in the plastic of the handle end and the molded pins are cylindrical.
  • the outer diameter of the pin should be equal to or slightly smaller than the inner diameter of the cylindrical opening of the handle end.
  • the projections on the pin can be arranged annularly and coaxially on the pin. Also, a particularly secure hold is achieved when the annular projections have interruptions.
  • the pin frictionally rests in the opening of the handle end.
  • a particularly advantageous method for attaching a metal end cap in the plastic opening at the handle end of a knife is achieved when the end cap is excited by ultrasound when inserted into the opening and thereby plasticized the plastic of the handle.
  • the plastic of the opening wall stimulated by the ultrasound flows into the intermediate spaces of the projections of the pin.
  • a secure hold and high tightness are achieved when the underside of the end cap by the ultrasonic, the frontal outer edge of the opening plasticized. It is advantageous if the plasticized plastic flows into an annular recess which lies around the opening edge.
  • the handle 1 of a knife has an integrally formed on the metal blade metal Erl 2, which is covered as a flat iron on both sides of each of two plastic handles 3 plastic.
  • the Erl 2 can be seen on both sides of the handle or there covered by the handles so that it is not visible.
  • the plastic of the handle 1 and thus the handles 3 form at the end of the handle a cylindrical opening 4 in the form of a bore in which the metallic pin 5 of a metal end cap 6 rests positively, wherein the pin 5 is formed on the end cap and the end cap. 6 covered the plastic of the handle end.
  • the outer diameter of the cylindrical pin 5 corresponds to the inner diameter of the opening 4, so that the pin 5 rests in a form-fitting manner, in particular frictionally engaged in the opening 4.
  • the Erl 2 facing the end of the pin 5 has a recess 7 which engages the Erl 2 positively.
  • the opening preferably forms a diametrical transverse slot, in which the Erlende rests positively.
  • the end cap 6 is held non-rotatably on the Erl 2.
  • protrusions 8 On the cylindrical outer side of the pin 5 are protrusions 8, which are preferably arranged annularly and coaxially on the pin 5.
  • the annular projections 8 may have interruptions to a To find particularly secure and rotatable grip in the plastic of the handle. This leads to a secure hold of the pin 5 in the opening. 4
  • a particularly advantageous fastening method is that the end cap 6 is excited by exposure to the opening 4 in the ultrasound and thereby plasticizes the plastic of the handle 1 in the region of the opening 4 and the rear end of the handle. As a result, the plastic of the opening wall is brought into the spaces between the projections 8 flowing.
  • the underside of the end cap 6 also plasticizes the outer edge of the opening 4 and thus also the end of the handle, so that a very dense hold is achieved and thus moisture penetration into the interior of the handle is reliably prevented.
  • the plasticized plastic can flow into an annular recess 9 at the end of the handle, which lies around the opening edge.

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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 mit einer metallenen Klinge und einem an der Klinge angeformten Erl, der als Flacheisen den Griff aus Kunststoff trägt, wobei am Griffende eine metallene Endkappe befestigt ist.The invention relates to a knife with a metal blade and an integrally formed on the blade Erl, which carries as a flat iron, the handle made of plastic, wherein at the end of the handle a metal end cap is attached.

Es ist bekannt, die metallene Endkappe eines Messergriffes derart herzustellen, dass die Endkappe am Erl ausgeschmiedet wird. Alternativ ist es bekannt, die metallene Endkappe als Gussteil herzustellen und an das Erlende anzuschweißen. Beide Herstellungsverfahren sind arbeitsaufwendig in der Herstellung und Befestigung.It is known to make the metal end cap of a knife handle such that the end cap is forged out on the tang. Alternatively, it is known to make the metal end cap as a casting and to weld it to the end of the Erlende. Both manufacturing processes are labor intensive in manufacturing and fastening.

Aus der GB 1 275 955 und der US 1 420 342 A ist es bekannt, am Ende eines Messergriffs eine Öffnung vorzusehen, in die eine Hülse mit Endkappe gesteckt ist. Die Hülse weist ein Innengewinde auf, mit der sie auf ein Außengewinde am Erlende aufgeschraubt ist. Eine solche Konstruktion ist aufwändig in Herstellung und Montage.From the GB 1 275 955 and the US Pat. No. 1,420,342 A It is known to provide at the end of a knife handle an opening into which a sleeve with end cap is inserted. The sleeve has an internal thread with which it is screwed onto an external thread at the end of the Erlende. Such a construction is complex in manufacture and assembly.

Aufgabe der Erfindung ist es, bei einem Messer der eingangs genannten Art die metallene Endkappe auf einfache und sichere Weise insbesondere montagesicher und reproduzierbar zu befestigen und hierbei eine schnelle Weiterverarbeitung des Messers zu ermöglichen. Auch soll die genaue Drehstellung der Endkappe sichergestellt sein.The object of the invention is to attach the metal end cap in a knife of the type mentioned in a safe and easy way especially safe to install and reproducible and this to allow rapid processing of the knife. Also, the exact rotational position of the end cap should be ensured.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Kunststoff am Griffende eine Öffnung aufweist, die zum Erlende führt, dass die metalleneThis object is achieved in that the plastic has an opening at the handle end, which leads to the Erlende that the metal

Endkappe einen angeformten Zapfen aufweist, der formschlüssig in der Öffnung einliegt, dass der Zapfen an seinem dem Erlende zugewandten Ende eine Ausnehmung insbesondere einen Querschlitz aufweist, mit der/dem er das Erlende formschlüssig übergreift und dass der Zapfen seitlich Vorsprünge aufweist.End cap has a molded pin which rests positively in the opening, that the pin has at its end facing the Erlende a recess in particular a transverse slot with which he engages the Erlende form-fitting manner and that the pin has projections laterally.

Hierdurch wird ein sicherer, formschlüssiger Halt der metallenen Endkappe am Kunststoff des Griffes und am Erl erreicht, wobei sichergestellt ist, dass keine ungewollte Schiefstellung der Endkappe entsteht, welche zu einem Produktionsausschluss führen würde. Die am Zapfen angeordneten seitlichen Vorsprünge sorgen für einen besonders sicheren Halt in der Öffnung.As a result, a secure, positive fit of the metal end cap on the plastic of the handle and the Erl is achieved, it being ensured that no unwanted skewing of the end cap is formed, which would lead to a production exclusion. The pins arranged on the lateral projections ensure a particularly secure hold in the opening.

Vorzugsweise wird vorgeschlagen, dass die Öffnung im Kunststoff des Griffendes und der angeformte Zapfen zylindrisch sind. Auch sollte der Außendurchmesser des Zapfens gleich oder geringfügig kleiner sein als der Innendurchmesser der zylindrischen Öffnung des Griffendes.It is preferably proposed that the opening in the plastic of the handle end and the molded pins are cylindrical. Also, the outer diameter of the pin should be equal to or slightly smaller than the inner diameter of the cylindrical opening of the handle end.

Die Vorsprünge am Zapfen können ringförmig und koaxial am Zapfen angeordnet sein. Auch wird ein besonders sicherer Halt erreicht, wenn die ringförmigen Vorsprünge Unterbrechungen aufweisen.The projections on the pin can be arranged annularly and coaxially on the pin. Also, a particularly secure hold is achieved when the annular projections have interruptions.

Vorzugsweise wird vorgeschlagen, dass der Zapfen reibschlüssig in der Öffnung des Griffendes einliegt.It is preferably proposed that the pin frictionally rests in the opening of the handle end.

Ein besonders vorteilhaftes Verfahren zum Befestigen einer metallenen Endkappe in der Kunststofföffnung am Griffende eines Messers wird erzielt, wenn die Endkappe beim Einsetzen in die Öffnung durch Ultraschall angeregt wird und hierdurch den Kunststoff des Griffes plastifiziert. Hierbei wird erreicht, dass der durch den Ultraschall angeregte Kunststoff der Öffnungswand in die Zwischenräume der Vorsprünge des Zapfens fließt.A particularly advantageous method for attaching a metal end cap in the plastic opening at the handle end of a knife is achieved when the end cap is excited by ultrasound when inserted into the opening and thereby plasticized the plastic of the handle. In this case, it is achieved that the plastic of the opening wall stimulated by the ultrasound flows into the intermediate spaces of the projections of the pin.

Ein sicherer Halt und hohe Dichtigkeit werden dann erreicht, wenn durch den Ultraschall die Unterseite der Endkappe den stirnseitigen Außenrand der Öffnung plastifiziert. Hierbei ist von Vorteil, wenn der plastifizierte Kunststoff in eine ringförmige Ausnehmung fließt, die um den Öffnungsrand herum liegt.A secure hold and high tightness are achieved when the underside of the end cap by the ultrasonic, the frontal outer edge of the opening plasticized. It is advantageous if the plasticized plastic flows into an annular recess which lies around the opening edge.

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

Figur 1
einen axialen Schnitt im Bereich des hinteren Endes eines Messergriffes;
Figur 2
eine perspektivische Ansicht der Endkappe.
An embodiment of the invention is shown in the drawings. Show it:
FIG. 1
an axial section in the region of the rear end of a knife handle;
FIG. 2
a perspective view of the end cap.

Der Griff 1 eines Messers weist einen an der metallenen Klinge angeformten metallenen Erl 2 auf, der als Flacheisen beidseitig jeweils von zwei Griffschalen 3 aus Kunststoff überdeckt ist. Hierbei kann der Erl 2 auf beiden Seiten des Griffes ersichtlich sein oder dort auch von den Griffschalen überdeckt sein, so dass er nicht sichtbar ist.The handle 1 of a knife has an integrally formed on the metal blade metal Erl 2, which is covered as a flat iron on both sides of each of two plastic handles 3 plastic. Here, the Erl 2 can be seen on both sides of the handle or there covered by the handles so that it is not visible.

Der Kunststoff des Griffes 1 und damit die Griffschalen 3 bilden am Ende des Griffes eine zylindrische Öffnung 4 in Form einer Bohrung, in der formschlüssig der metallene Zapfen 5 einer metallenen Endkappe 6 einliegt, wobei der Zapfen 5 an der Endkappe angeformt ist und die Endkappe 6 den Kunststoff des Griffendes überdeckt. Hierbei entspricht der Außendurchmesser des zylindrischen Zapfens 5 dem Innendurchmesser der Öffnung 4, so dass der Zapfen 5 formschlüssig insbesondere reibschlüssig in der Öffnung 4 einliegt.The plastic of the handle 1 and thus the handles 3 form at the end of the handle a cylindrical opening 4 in the form of a bore in which the metallic pin 5 of a metal end cap 6 rests positively, wherein the pin 5 is formed on the end cap and the end cap. 6 covered the plastic of the handle end. Here, the outer diameter of the cylindrical pin 5 corresponds to the inner diameter of the opening 4, so that the pin 5 rests in a form-fitting manner, in particular frictionally engaged in the opening 4.

Das dem Erl 2 zugewandte Ende des Zapfens 5 besitzt eine Ausnehmung 7, die formschlüssig den Erl 2 übergreift. Hierbei bildet die Öffnung vorzugsweise einen diametralen Querschlitz, in dem das Erlende formschlüssig einliegt. Hierdurch ist die Endkappe 6 unverdrehbar am Erl 2 gehalten.The Erl 2 facing the end of the pin 5 has a recess 7 which engages the Erl 2 positively. In this case, the opening preferably forms a diametrical transverse slot, in which the Erlende rests positively. As a result, the end cap 6 is held non-rotatably on the Erl 2.

An der zylindrischen Außenseite des Zapfens 5 stehen Vorsprünge 8 vor, die vorzugsweise ringförmig und koaxial am Zapfen 5 angeordnet sind. Hierbei können die ringförmigen Vorsprünge 8 Unterbrechungen aufweisen, um einen besonders sicheren und verdrehbaren Halt im Kunststoff des Griffes zu finden. Dies führt zu einem sicheren Halt des Zapfens 5 in der Öffnung 4.On the cylindrical outer side of the pin 5 are protrusions 8, which are preferably arranged annularly and coaxially on the pin 5. Here, the annular projections 8 may have interruptions to a To find particularly secure and rotatable grip in the plastic of the handle. This leads to a secure hold of the pin 5 in the opening. 4

Ein besonders vorteilhaftes Befestigungsverfahren besteht darin, dass die Endkappe 6 beim Aussetzen in die Öffnung 4 durch Ultraschall angeregt wird und hierdurch den Kunststoff des Griffes 1 im Bereich der Öffnung 4 und des hinteren Endes des Griffes plastifiziert. Hierdurch wird der Kunststoff der Öffnungswand in die Zwischenräume zwischen die Vorsprünge 8 fließend gebracht.A particularly advantageous fastening method is that the end cap 6 is excited by exposure to the opening 4 in the ultrasound and thereby plasticizes the plastic of the handle 1 in the region of the opening 4 and the rear end of the handle. As a result, the plastic of the opening wall is brought into the spaces between the projections 8 flowing.

Durch den Ultraschall plastifiziert die Unterseite der Endkappe 6 auch den Außenrand der Öffnung 4 und damit auch das Ende des Griffes, so dass ein sehr dichter Halt erreicht wird und damit ein Eindringen von Feuchtigkeit in das Innere des Griffes sicher verhindert wird. Hierbei kann der plastifizierte Kunststoff in eine ringförmige Ausnehmung 9 am Ende des Griffes fließen, die um den Öffnungsrand herum liegt.Due to the ultrasound, the underside of the end cap 6 also plasticizes the outer edge of the opening 4 and thus also the end of the handle, so that a very dense hold is achieved and thus moisture penetration into the interior of the handle is reliably prevented. Here, the plasticized plastic can flow into an annular recess 9 at the end of the handle, which lies around the opening edge.

Claims (10)

  1. Knife with a metal blade and a tang (2) that is formed as an integral part of the blade and, as a flat bar, bears the grip (1) made of plastic, wherein a metal end cap (6) is fastened to the end of the grip, wherein the plastic at the end of the grip has an opening (4) that extends to the end of the tang, characterized
    in that the metal end cap (6) has an integrally formed tenon (5), which lies in the opening (4) in form-fitting engagement,
    in that the tenon (5) has at its end facing the end of the tang a clearance (7), in particular a transverse slot, with which it reaches over the end of the tang in form-fitting engagement, and
    in that the tenon (5) laterally has projections (8).
  2. Knife according to Claim 1, characterized in that the opening (4) in the plastic at the end of the grip and the integrally formed tenon (5) are cylindrical.
  3. Knife according to Claim 1 or 2, characterized in that the outside diameter of the tenon (5) is equal to or slightly less than the inside diameter of the cylindrical opening (4) at the end of the grip.
  4. Knife according to one of the preceding claims, characterized in that the projections (8) are arranged on the tenon (5) in an annular and coaxial manner.
  5. Knife according to Claim 4, characterized in that the annular projections (8) have interruptions.
  6. Knife according to one of the preceding claims, characterized in that the tenon lies in the opening at the end of the grip with frictional engagement.
  7. Method for fastening a metal end cap in the plastic opening at the end of the grip of a knife according to Claim 1, characterized in that the end cap has an integrally formed tenon (5), which laterally has projections (8), and in that the end cap is excited by ultrasound when it is inserted into the opening, and thereby plasticates the plastic of the grip.
  8. Method according to Claim 7, characterized in that, due to the ultrasound, the plastic of the wall of the opening flows into the intermediate spaces between the projections (8) of the tenon.
  9. Method according to Claim 7 or 8, characterized in that, due to the ultrasound, the underside of the end cap plasticates the outer periphery of the opening.
  10. Method according to Claim 8 or 9, characterized in that the plasticated plastic flows into an annular clearance (9), which lies around the periphery of the opening.
EP12001958.3A 2011-03-31 2012-03-20 Blade with a metallic end cap Active EP2505320B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011015718A DE102011015718A1 (en) 2011-03-31 2011-03-31 Knife with a metal end cap

Publications (2)

Publication Number Publication Date
EP2505320A1 EP2505320A1 (en) 2012-10-03
EP2505320B1 true EP2505320B1 (en) 2014-11-19

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ID=45932089

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EP12001958.3A Active EP2505320B1 (en) 2011-03-31 2012-03-20 Blade with a metallic end cap

Country Status (5)

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US (1) US20120246946A1 (en)
EP (1) EP2505320B1 (en)
CN (1) CN102773847B (en)
DE (1) DE102011015718A1 (en)
ES (1) ES2530773T3 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021190923A1 (en) * 2020-03-23 2021-09-30 Zwilling J.A. Henckels Ag Knife handle with end face

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CN102773847A (en) 2012-11-14
DE102011015718A1 (en) 2012-10-04
CN102773847B (en) 2015-08-19
US20120246946A1 (en) 2012-10-04
ES2530773T3 (en) 2015-03-05
EP2505320A1 (en) 2012-10-03

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