EP0288923B1 - Cutting tools provided with plastic handles - Google Patents

Cutting tools provided with plastic handles Download PDF

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Publication number
EP0288923B1
EP0288923B1 EP88106479A EP88106479A EP0288923B1 EP 0288923 B1 EP0288923 B1 EP 0288923B1 EP 88106479 A EP88106479 A EP 88106479A EP 88106479 A EP88106479 A EP 88106479A EP 0288923 B1 EP0288923 B1 EP 0288923B1
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EP
European Patent Office
Prior art keywords
cross
handle body
section
sectional
fixing section
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
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EP88106479A
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German (de)
French (fr)
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EP0288923A1 (en
Inventor
Wilfried Clotten
Rainer Feige
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
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JA Henckels Zwillingswerk AG
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Publication of EP0288923A1 publication Critical patent/EP0288923A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/34—Attaching handles to the implements by pressing the handle on the implements; using cement or molten metal, e.g. casting, moulding, by welding or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/06—Socket, tang, or like fixings with multiple socket, e.g. T-socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades

Definitions

  • the invention relates to a plastic handle body for cutting tools, in particular knives, the handle body having an insertion shaft in which a fastening section of the cutting tool is held with a flush connection between the cutting tool and the handle body, the insertion shaft, viewed in cross section, spaced apart from its two ends each broadside of the shaft has a widened cross-section.
  • a plastic handle body of the aforementioned type is known from GB-A 767 320, wherein after insertion of the fastening section of a knife, the widening of ribs of the fastening section running on both sides of a plug-in shaft are filled in in a form-fitting manner.
  • This design requires an increased manufacturing effort with regard to the fastening section.
  • FR-A 2 560 804 has a similar structure to the plastic handle body of a knife. Also in the embodiment shown there, the two widenings extending to the side of the essentially flat plug-in shaft are completely filled by the fastening section after insertion.
  • DE-B 1 023 368 proposes a handle body that consists of two shell-shaped halves. The latter are soldered or welded together. Sheet metal is used as the material for the halves. The shell halves are shaped so that a tab is formed at the front end, which projects upward at an obtuse angle to the longitudinal axis of the handle body. After soldering or welding the halves of the booklet, the edge of the flap is ground flat.
  • the object of the invention is to provide a handle body assignment in a technically simple manner, in which, in addition to an optically perfect design, a stable fixing of the fastening section in the plastic handle body is ensured.
  • the section that has not melted migrates into the widened cross section like a closure flap.
  • the flaps therefore also contribute to the form-fitting edge edging of the fastening section in accordance with the flap thickness.
  • the plug-in shaft together with the cross-sectional widenings, seen in cross-section, forms a cross-channel, which also favors the demolding of the handle body. Furthermore, it has proven advantageous in terms of allocation technology that the fastening section has cams for anchoring melted tack material. In terms of allocation technology, it is then still favorable that the fastening section is designed as a tang of a knife.
  • the knife blade shown here a chef's knife, consists of leaf 1, goiter 2 and tang 3.
  • the tang 3 is the mostly narrowed section of the blade which adjoins the knife blade via the bolster 2 and which is thermally connected to a handle body 4.
  • the handle body 4 made of corresponding thermoplastic material has a plug-in shaft 5 which extends into its end region facing away from the sheet.
  • the slot 5 extends almost over the entire handle width seen in the plane of the sheet, whereby it is closer to the handle back 4 'than the opposite handle body side 4 ", which is closer to the edge 6 of the sheet 1.
  • the tang forming the fastening section of the blade is made of flat material, preferably punched out and welded to the bolster 2.
  • the relevant welding bead running in the manner of a collar bears the reference number 7.
  • the branch cross-section recedes on all sides compared to the goiter margin.
  • the crop 2 is designed as a crop, all of them partially of a bolster edge length, which corresponds to the multiple of, for example, a table knife.
  • This strikingly increased length of the bolster essentially only exists in the section at which the alder 3 is attached.
  • the section of the bolster 2, on the other hand, pointing in the direction of the blade 6 is narrow. As usual, it wedges out on the wading side.
  • the predominant surface section of the mounting surface 2 'of the bolster 2 on the lower side is exposed.
  • This mounting surface 2 ' is flat, i.e. it extends perpendicular to the longitudinal axis x-x of the tang 3.
  • the slot 5 of the handle body 4 is, seen in cross section, spaced from its two ends (seen in the knife blade plane); it has a cross-sectional broadening on each shaft broadside (see FIG. 3).
  • the spacing dimension y has a length which ensures that the edge 3 of the tang 3 is sufficiently tight.
  • the corresponding form-fitting wrap is therefore only in the central area, i.e. abandoned on the broad sides of the shaft.
  • Plug-in shaft 5 and the two cross-sectional widenings 8 lead to a cross channel K.
  • the depth z of cross-sectional widening 8 measured in the transverse direction corresponds approximately to dimension y, the latter to the material thickness of tang 3.
  • the width of the cross-sectional widening is a multiple of y.
  • the two equally long tabs 9 converge in the direction of their free state.
  • the angle of inclination alpha is approximately 40 ° , based on the longitudinal central axis xx (FIG. 4).
  • the thickness of the tabs 9 corresponds approximately to the depth dimension z of a cross-sectional widening.
  • the clear distance between the ends of the tabs 9, more precisely between their adjacent corner edges, is at least as large as the width of the insertion shaft 5, that is, corresponding to the thickness of the tang.
  • the flaps 9 are rooted both in the end face 4 ′′ of the handle body and on the base 8 ′. This can be clearly seen in FIG. 4.
  • Rinsing water or the like is unable to enter the cross channel K.
  • the lifespan of the steel goods is considerably increased.
  • For the rest there is only a comparatively small accumulation of material in the area of the flap, so that, due to warming-up, at least for optical reasons, it is also unlikely that the handle wall will collapse.
  • Another measure of handle attachment is that the attachment portion of the blade, i.e. the tang 3 has cams 11 for anchoring melted tack material on the narrow sides of the flat tang body (see FIG. 2).

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

Abstract

1. Plastic handle body for cutting tools, in particular knives, the handle body having an insertion shaft in which a fixing section of the cutting tool is held with a flush connection between the cutting tool and the handle body, the insertion shaft, seen in cross-section, having a cross-sectional broadening on each broad side of the shaft spaced away from its two ends, characterized in that the handle body (4) bears lobes (9) at its end face (4"') in the region of the base (8) of each cross-sectional broadening, which lobes are moulded on, protrude over the end face (4"') and, prior to insertion of the fixing section (3), converge in the direction of their free standing part and have a distance between their ends corresponding at least to the width of the insertion shaft, and which lobes (9) lie in place filling the cross-section at the insertion side end of the cross-sectional broadenings (8) after complete introduction of the fixing section (3), means of guiding inwards into the handle.

Description

Die Erfindung betrifft einen Kunststoff-Griffkörper für Schneidwerkzeuge, insbesondere Messer, wobei der Griffkörper einen Steckschaft aufweist, in dem unter bündigem Anschluß zwischen Schneidwerkzeug und Griffkörper ein Befestigungsabschnitt des Schneidwerkzeugs gehalten ist, wobei der Steckschacht, im Querschnitt gesehen, beabstandet von seinen beiden Enden an jeder Schachtbreitseite eine Querschnittsverbreiterung aufweist.The invention relates to a plastic handle body for cutting tools, in particular knives, the handle body having an insertion shaft in which a fastening section of the cutting tool is held with a flush connection between the cutting tool and the handle body, the insertion shaft, viewed in cross section, spaced apart from its two ends each broadside of the shaft has a widened cross-section.

Ein Kunststoff-Griffkörper der vorgenannten Art ist aus der GB-A 767 320 bekannt, wobei nach Einschub des Befestigungsabschnitts eines Messers die beiderseits eines Steckschachts verlaufenden Verbreiterungen von Rippen des Befestigungsabschnitts formschlüssig ausgefüllt werden. Diese Bauform verlangt einen erhöhten Herstellungsaufwand im Hinblick auf den Befestigungsabschnitt.A plastic handle body of the aforementioned type is known from GB-A 767 320, wherein after insertion of the fastening section of a knife, the widening of ribs of the fastening section running on both sides of a plug-in shaft are filled in in a form-fitting manner. This design requires an increased manufacturing effort with regard to the fastening section.

Ähnlich aufgebaut ist der Kunststoff-Griffkörper eines Messers bei der FR-A 2 560 804. Auch bei der dort aufgezeigten Ausgestaltung werden die beiden seitlich des im wesentlichen flach gestalteten Steckschachts verlaufenden Verbreiterungen nach Einschub des Befestigungsabschnitts durch diesen vollständig ausgefüllt.FR-A 2 560 804 has a similar structure to the plastic handle body of a knife. Also in the embodiment shown there, the two widenings extending to the side of the essentially flat plug-in shaft are completely filled by the fastening section after insertion.

Durch die DE-B 1 023 368 wird ein Griffkörper vorgeschlagen, der aus zwei schalenförmigen Hälften besteht. Letztere werden miteinander verlötet oder verschweißt. Als Material für die Hälften ist Blech verwendet. Die Schalenhälften werden so geformt, daß am vorderen Ende ein Lappen entsteht, der unter einem stumpfen Winkel zur Längsachse des Griffkörpers nach oben ragt. Nach dem Verlöten oder Verschweißen der Hefthälften wird der Lappenrand plangeschliffen.DE-B 1 023 368 proposes a handle body that consists of two shell-shaped halves. The latter are soldered or welded together. Sheet metal is used as the material for the halves. The shell halves are shaped so that a tab is formed at the front end, which projects upward at an obtuse angle to the longitudinal axis of the handle body. After soldering or welding the halves of the booklet, the edge of the flap is ground flat.

Aufgabe der Erfindung ist es, in herstellungstechnisch einfacher Weise eine Griffkörper-Zuordnung zu schaffen, bei der neben einer optisch einwandfreien Ausgestaltung eine stabile Festlegung des Befestigungsabschnitts in dem Kunststoff-Griffkörper gewährleistet ist.The object of the invention is to provide a handle body assignment in a technically simple manner, in which, in addition to an optically perfect design, a stable fixing of the fastening section in the plastic handle body is ensured.

Gelöst ist diese Aufgabe durch die im Patentanspruch 1 angegebene Erfindung.This object is achieved by the invention specified in claim 1.

Die Unteransprüche sind vorteilhafte Weiterbildungen der erfindungsgemäßen Lösung.The subclaims are advantageous developments of the solution according to the invention.

Zufolge solcher Ausgestaltung ist eine sowohl optisch als auch stabilisatorisch einwandfreie Kunststoff-Griffkörperzuordnung erreicht. Die entsprechenden Mittel sind einfach und zweckmäßig. Die an der Stimfläche im Bereich des Grundes jeder Querschnittsverbreiterung angeformten, die Stirnfläche überragenden Lappen konvergieren vor Einschub des Befestigungsabschnitts in Richtung ihres Freistandes zueinander. Beim Einschieben des Befestigungsabschnitts werden durch diesen die stirnseitig vorstehenden Lappen in Griffeinwärtsrichtung gebogen bzw. gelenkt, so daß sie nach vollständigem Einschub querschnittsausfüllend am einsteckseitigen Ende der Querschnittsverbreiterungen einliegen. Außerdem stellen die Lappen zusätzliches Material dar, um durch partielles Wegschmelzen der Stirnfläche des Griffkörpers einen gegen Wasser genügend dichten Zuordnungs-Anschluß zu bekommen. Da ferner der lichte Abstand zwischen den Enden der Lappen mindestens so groß ist wie die Steckschachtbreite, wandert der nicht abgeschmolzene Abschnitt wie eine Verschlußklappe in die Querschnittsverbreiterung hinein. Daher tragen die Lappen zusätzlich zur formschlüssigen Randeinfassung des Befestigungsabschnitts entsprechend der Lappendicke bei. Trotz des durch die Querschnittsverbreiterungen nicht mehr vollflächigen Schachtumgriffs des Befestigungsabschnitts ist dennoch die notwendige Gebrauchsstabilität beibehalten zufolge der Beabstandung dieser Verbreiterungen von den ansonsten in dieser Querschnittsebene durch den Schacht gefaßten Enden des Befestigungsabschnitts des Schneidwerkzeugs. Der Steckschacht bildet zusammen mit den Querschnittsverbreiterungen, im Querschnitt gesehen, einen Kreuzkanal, der auch das Entformen des Griffkörpers begünstigt. Weiter erweist es sich in zuordnungstechnischer Hinsicht als vorteilhaft, daß der Befestigungsabschnitt zur Verankerung von aufgeschmolzenem Heftkörpermaterial Nocken aufweist. In zuordnungstechnischer Hinsicht ist es dann noch günstig, daß der Befestigungsabschnitt als Erl eines Messers ausgebildet ist.As a result of such a configuration, a plastic handle body assignment that is both optically and stabilistically flawless is achieved. The appropriate means are simple and convenient. The flaps formed on the end face in the area of the base of each cross-sectional widening and projecting beyond the end face converge in the direction of their clearance before the fastening section is inserted. When the fastening section is pushed in, the tabs projecting on the end face are bent or steered in the handle inward direction, so that after complete insertion they lie in the cross-section widening to fill the cross section. In addition, the tabs represent additional material in order to obtain a sufficiently watertight assignment connection by partially melting away the end face of the handle body. Furthermore, since the clear distance between the ends of the tabs is at least as large as the width of the slot, the section that has not melted migrates into the widened cross section like a closure flap. The flaps therefore also contribute to the form-fitting edge edging of the fastening section in accordance with the flap thickness. Despite the fact that the wrap-around of the fastening section no longer covers the entire area due to the cross-sectional widening, the necessary stability of use is nevertheless maintained due to the spacing of these widenings from the ends of the fastening section of the cutting tool which are otherwise contained by the shaft in this cross-sectional plane. The plug-in shaft, together with the cross-sectional widenings, seen in cross-section, forms a cross-channel, which also favors the demolding of the handle body. Furthermore, it has proven advantageous in terms of allocation technology that the fastening section has cams for anchoring melted tack material. In terms of allocation technology, it is then still favorable that the fastening section is designed as a tang of a knife.

Der Gegenstand der Erfindung ist nachstehend anhand eines zeichnerisch veranschaulichten Ausführungsbeispieles näher erläutert. Es zeigt

  • Fig. 1 ein Messer in Seitenansicht,
  • Fig. 2 den Erl/Kropf-Bereich ebenfalls in Seitenansicht bei noch nicht zugeordnetem Griffkörper,
  • Fig. 3 Griffkörper in perspektivischer Wiedergabe, vergrößert und aufgebrochen,
  • Fig. 4 den Schnitt gemäß Linie IV in Figur 3, und zwar bei in den Steckschacht eingeführten Erle in einer Montage-Zwischenstellung und
  • Fig. 5 eine entsprechende Darstellung bei erfolgter thermischer Verbindung.
The subject matter of the invention is explained in more detail below on the basis of an illustrative embodiment. It shows
  • 1 is a knife in side view,
  • 2 the tang / goiter area also in a side view with the handle body not yet assigned,
  • 3 handle body in perspective reproduction, enlarged and broken open,
  • Fig. 4 shows the section along line IV in Figure 3, namely when inserted in the slot alder in an intermediate assembly position and
  • 5 shows a corresponding illustration when the thermal connection has taken place.

Die dargestellte Messerklinge, hier ein Kochmesser, besteht aus Blatt 1, Kropf 2 und Erl 3.The knife blade shown, here a chef's knife, consists of leaf 1, goiter 2 and tang 3.

Der Erl 3 ist der über den Kropf 2 an das Messerblatt anschließende, meist verschmälerte Abschnitt der Klinge, welcher mit einem Griffkörper 4 thermisch verbunden wird.The tang 3 is the mostly narrowed section of the blade which adjoins the knife blade via the bolster 2 and which is thermally connected to a handle body 4.

Der aus entsprechend thermoplastischem Kunststoff gefertigte Griffkörper 4 besitzt einen bis in seinen dem Blatt abgewandten Endbereich reichenden Steckschacht 5.The handle body 4 made of corresponding thermoplastic material has a plug-in shaft 5 which extends into its end region facing away from the sheet.

Der Steckschacht 5 erstreckt sich nahezu über die gesamte in der Blattebene gesehene Griffbreite, wobei er in Bezug auf den Griffrücken 4' eine größere Nähe einnimmt als die gegenüberliegende Griffkörperseite 4", welche der Wate 6 des Blattes 1 näherliegt.The slot 5 extends almost over the entire handle width seen in the plane of the sheet, whereby it is closer to the handle back 4 'than the opposite handle body side 4 ", which is closer to the edge 6 of the sheet 1.

Der den Befestigungsabschnitt der Klinge bildende Erl ist aus flachem Material gestaltet, vorzugsweise ausgestanzt und mit dem Kropf 2 verschweisst. Die diesbezügliche kragenartig umlaufende Schweissraupe trägt das Bezugszeichen 7.The tang forming the fastening section of the blade is made of flat material, preferably punched out and welded to the bolster 2. The relevant welding bead running in the manner of a collar bears the reference number 7.

Der Erlquerschnitt tritt gegenüber dem Kropfrand allseitig zurück. Im vorliegenden Beispiel ist der Kropf 2 als Hochkropf ausgebildet, allerdings partiell von einer Kropfrandlänge, die der vielfachen beispielsweise eines Tafelmessers entspricht. Diese auffällig vergrößerte Länge des Kropfrandes besteht dabei im wesentlichen nur in dem Abschnitt, an dem der Erle 3 angesetzt ist. Der dagegen in Richtung der Messerwate 6 weisende Abschnitt des Kropfes 2 ist dagegen schmal gestaltet. Er keilt, wie üblich, watenseitig aus.The branch cross-section recedes on all sides compared to the goiter margin. In the present example, the crop 2 is designed as a crop, all of them partially of a bolster edge length, which corresponds to the multiple of, for example, a table knife. This strikingly increased length of the bolster essentially only exists in the section at which the alder 3 is attached. The section of the bolster 2, on the other hand, pointing in the direction of the blade 6 is narrow. As usual, it wedges out on the wading side.

Der überwiegende Flächenabschnitt der erlseitigen Befestigungsfläche 2' des Kropfes 2 liegt frei. Diese Befestigungsfläche 2' ist plan, d.h. sie erstreckt sich senkrecht zur Längsachse x-x des Erls 3.The predominant surface section of the mounting surface 2 'of the bolster 2 on the lower side is exposed. This mounting surface 2 'is flat, i.e. it extends perpendicular to the longitudinal axis x-x of the tang 3.

Der Steckschacht 5 des Griffkörpers 4 ist, im Querschnitt gesehen, beabstandet von seinen beiden Enden (in der Messerblattebene gesehen); er weist an jeder Schachtbreitseite eine Querschnittserbreiterung auf 8 (vergleiche Figur 3). Das Beabstandungsmaß y weist eine Länge auf, die einen genügend festen Randkantenumgriff des Erls 3 sicherstellt. Der entsprechend formschlüssige Umgriff wird also bloß im Mittelbereich d.h. an den Schachtbreitseiten aufgegeben. Steckschacht 5 und die beiden Querschnittserbreiterungen 8 führen zu einem Kreuzkanal K. Die in der Querrichtung gemessene Tiefe z der Querschnittserbreiterung 8 entspricht etwa dem Maß y, letzteres der Materialdicke des Erl 3. Die Breite der Querschnittserbreiterung ist ein Vielfaches von y. Die über den eigentlichen Formschlußumgriff hinausgehende Ausräumung des Griffkörpers führt nicht nur zu Materialersparnis, sondern vermeidet auch die Gefahr eines Einfallens der Griffkörperaußenfläche nach dem Entformen des Griffkörpers aus der Kunststoffspritzform.The slot 5 of the handle body 4 is, seen in cross section, spaced from its two ends (seen in the knife blade plane); it has a cross-sectional broadening on each shaft broadside (see FIG. 3). The spacing dimension y has a length which ensures that the edge 3 of the tang 3 is sufficiently tight. The corresponding form-fitting wrap is therefore only in the central area, i.e. abandoned on the broad sides of the shaft. Plug-in shaft 5 and the two cross-sectional widenings 8 lead to a cross channel K. The depth z of cross-sectional widening 8 measured in the transverse direction corresponds approximately to dimension y, the latter to the material thickness of tang 3. The width of the cross-sectional widening is a multiple of y. The removal of the handle body that goes beyond the actual positive locking not only leads to material savings, but also avoids the risk of the outer surface of the handle body collapsing after the handle body has been removed from the plastic injection mold.

Um dennoch im Hinblick auf die Befestigungsfläche 2' eine möglichst kongruente Stirnfläche 4" für den hülsenförmigen Kunststoff-Griffkörper 4 zu erhalten, trägt dieser an seiner Stirnfläche 4* im Bereich des Grundes 8' der Querschnittserbreiterungen 8 je einen gleich mit angeformten, freistehenden Lappen 9 (es wird auf die Figuren 3 und 4 verwiesen).In order nevertheless to obtain a congruent end face 4 ″ for the sleeve-shaped plastic handle body 4 with regard to the fastening surface 2 ′, the latter has on its end face 4 * in the area of the base 8 ′ of the cross-sectional widenings 8 each a free-standing tab 9 molded onto it (reference is made to FIGS. 3 and 4).

Die beiden gleich langen Lappen 9 konvergieren in Richtung ihres Freistandes. Der Neigungswinkel Alpha beträgt ca. 40°, bezogen auf die Längsmittelachse x-x (Figur 4).The two equally long tabs 9 converge in the direction of their free state. The angle of inclination alpha is approximately 40 ° , based on the longitudinal central axis xx (FIG. 4).

Die Dicke der Lappen 9 entspricht in etwa dem Tiefenmaß z einer Querschnittserbreiterung. Der lichte Abstand zwischen den Enden der Lappen 9, genauer gesagt zwischen deren benachbarten Eckkanten, ist mindestens so groß wie die Breite des Steckschachtes 5, also der Dicke des Erl entsprechend. Die Lappen 9 wurzeln sowohl in der Stirnfläche 4" des Griffkörpers als auch auf dem Erbreiterungsgrund 8'. Dies geht deutlich aus Figur 4 hervor.The thickness of the tabs 9 corresponds approximately to the depth dimension z of a cross-sectional widening. The clear distance between the ends of the tabs 9, more precisely between their adjacent corner edges, is at least as large as the width of the insertion shaft 5, that is, corresponding to the thickness of the tang. The flaps 9 are rooted both in the end face 4 ″ of the handle body and on the base 8 ′. This can be clearly seen in FIG. 4.

Die Lappen 9 besitzen die Stirnflächen 9'. Die Zuordnung des Griffkörpers 4 geschieht wie folgt:

  • Der Bereich des Kropfes 2 wird aufgewärmt (Induktionserhitzung). Der gegebenenfalls vorgewärmte, zuordnungsseitige Endbereich des Griffkörpers 4 wird, über das freie Ende des Erl 3 gesteckt, lagegerecht in Richtung des Kropfes 2 geschoben, wobei der langrechteckige Erlquerschnitt unter Erfassen seiner schmalen Längsrandkanten stramm in den Steckschacht 5 eintritt. Zufolge des freien Abstandes zwischen den Lappen 9 behalten diese bis zuletzt ihre konvergierende Vorstreck-Ausrichtung bei. Ihre nach auswärts gerichteten Eckkanten treffen sodann auf die erhitzte Befestigungsfläche 2' des Kropfes 2. Das dortige Griffmaterial erweicht.
The tabs 9 have the end faces 9 '. The grip body 4 is assigned as follows:
  • The area of the bolster 2 is warmed up (induction heating). The possibly preheated, assignment-side end region of the handle body 4, pushed over the free end of the tang 3, is pushed in the correct direction in the direction of the bolster 2, the elongated rectangular cross-section tightly entering the slot 5 while grasping its narrow longitudinal edge edges. As a result of the free distance between the flaps 9, they retain their converging pre-stretch orientation until the very end. Their outward-facing corner edges then meet the heated fastening surface 2 'of the bolster 2. The grip material there softens.

Es kommt hierdurch zu einem Einlenken der gleichfalls plastifizierten Lappen 9. Diese wandern querschnittsausfüllend in die querschnittsangepasste Querschnittserbreiterung 8 ein. Die Außenflanken 9" erstrecken sich schließlich ebenengleich zur Stirnfläche 4"' des Griffkörpers 4. Es kommt so zu einem lückenlosen Anschmelzen dieser rings um den Erlquerschnitt formpassend geschlossenen Stirnfläche 4" an der korrespondierenden Befestigungsfläche 2' des Kropfes 2. Die Schweißraupe 7 formt sich ein Bett im diesbezüglichen Mündungsrand des Steckschachtes. Auch hierbei wird, nicht zuletzt durch die Lappen 9, eine hochgradige Abdichtung erzielt und zugleich eine dauerhafte Befestigung.This also results in the flaps 9, which are also plasticized, being deflected into the cross-section widening 8 to fill the cross-section. The outer flanks 9 "finally extend at the same level as the end face 4" 'of the handle body 4. This results in a complete melting of this closed end face 4 "around the cross section at the corresponding fastening face 2' of the bolster 2. The weld bead 7 is formed Bed in the relevant edge of the mouth of the plug-in shaft, here too, not least by means of the tabs 9, a high-quality seal is achieved and at the same time permanent fastening.

Spülwasser oder dergleichen ist nicht in der Lage in den Kreuzkanal K einzutreten. Die Lebenszeit der Stahlware ist dadurch erheblich heraufgesetzt. Im übrigen liegt im Lappenbereich nur eine verhältnismäßig geringe Materialanhäufung vor, so daß demzufolge auch ein zumindest aus optischen Gründen als störend empfundenes Einfallen der Griffwandung zufolge Aufwärmung ebenfalls nicht auftritt.Rinsing water or the like is unable to enter the cross channel K. The lifespan of the steel goods is considerably increased. For the rest, there is only a comparatively small accumulation of material in the area of the flap, so that, due to warming-up, at least for optical reasons, it is also unlikely that the handle wall will collapse.

Eine weitere Maßnahme der Griffbefestigung besteht noch darin, daß der Befestigungsabschnitt der Klinge, d.h. der Erl 3, zur Verankerung von aufgeschmolzenem Heftkörpermaterial an den Schmalseiten des flachen Erlkörpers Nocken 11 aufweist (vergleiche Figur 2).Another measure of handle attachment is that the attachment portion of the blade, i.e. the tang 3 has cams 11 for anchoring melted tack material on the narrow sides of the flat tang body (see FIG. 2).

Diesen folgend setzt sich die Randkante in eine Auflaufschräge 12 fort, die das Griffkörpermaterial leicht aufweitet und den übergeschobenen Teil zufolge der Hinterschneidungen 11 einshnüren läßt. An beiden Schmalseiten des Erl befindet sich auch im freien Endbereich desselben sodann noch eine Nische 13.Following this, the marginal edge continues into a run-up slope 12, which widens the handle body material slightly and allows the pushed-over part to be constricted due to the undercuts 11. There is also a niche 13 on both narrow sides of the tang in the free end area of the tang.

Alle in der Beschreibung erwähnten und in der Zeichnung dargestellten neuen Merkmale sind erfindungswesentlich, auch soweit sie in den Ansprüchen nicht ausdrücklich beansprucht sind.All the new features mentioned in the description and shown in the drawing are essential to the invention, even if they are not expressly claimed in the claims.

Claims (4)

1. Plastic handle body for cutting tools, in particular knives, the handle body having an insertion shaft in which a fixing section of the cutting tool is held with a flush connection between the cutting tool and the handle body, the insertion shaft, seen in cross-section, having a cross-sectional broadening on each broad side of the shaft spaced away from its two ends, characterized in that the handle body (4) bears lobes (9) at its end face (4"') in the region of the base (8) of each cross-sectional broadening, which lobes are moulded on, protrude over the end face (4"') and, prior to insertion of the fixing section (3), converge in the direction of their free standing part and have a distance between their ends corresponding at least to the width of the insertion shaft, and which lobes (9) lie in place filling the cross-section at the insertion side end of the cross-sectional broadenings (8) after complete introduction of the fixing section (3) , means of guiding inwards into the handle.
2. Plastic handle body according to Claims 1, characterized in that the width of the cross-sectional broadenings (8) is a multiple of the distance (y) of the cross-sectional broadening (8) from the end of the insertion shaft (5), and in that the insertion shaft (5), together with the cross-sectional broadenings (8) extending over the entire length of the insertion shaft (5), forms a cross channel.
3. Plastic handle body according to Claim 1, characterized in that the fixing section (3) has cams (11) for the anchoring of melted on haft body material.
4. Plastic handle body according to Claim 1, characterized in that the fixing section (3) is constructed as the shank of a knife.
EP88106479A 1987-04-25 1988-04-22 Cutting tools provided with plastic handles Expired - Lifetime EP0288923B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873713958 DE3713958A1 (en) 1987-04-25 1987-04-25 PLASTIC HANDLES WITH CUTTING TOOLS
DE3713958 1987-04-25

Publications (2)

Publication Number Publication Date
EP0288923A1 EP0288923A1 (en) 1988-11-02
EP0288923B1 true EP0288923B1 (en) 1990-06-27

Family

ID=6326334

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Application Number Title Priority Date Filing Date
EP88106479A Expired - Lifetime EP0288923B1 (en) 1987-04-25 1988-04-22 Cutting tools provided with plastic handles

Country Status (5)

Country Link
US (1) US4955139A (en)
EP (1) EP0288923B1 (en)
CA (1) CA1310819C (en)
DE (2) DE3713958A1 (en)
ES (1) ES2015978B3 (en)

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DE3926254C1 (en) * 1989-08-09 1990-12-06 Ed. Wuesthof Dreizackwerk, 5650 Solingen, De Handle for domestic knife - uses hard setting resin to fasten tang in bore of plastics handle
FR2674471B1 (en) * 1991-03-29 1995-10-06 Deglon Ets Jean PROCESS FOR MANUFACTURING KNIVES AND THE LIKE.
DE9108009U1 (en) * 1991-06-28 1992-10-29 J.A. Henckels Zwillingswerk Ag, 5650 Solingen Knife with tang welded to the bolster
US5210925A (en) * 1992-02-21 1993-05-18 Buck Knives, Inc. Process for manufacturing a knife
US5251380A (en) * 1992-08-14 1993-10-12 Steven Craig Handle grip for a utility knife
US5442856A (en) * 1994-05-31 1995-08-22 Moody; James A. Survival and camping tool
DE19905587A1 (en) * 1999-02-11 2000-08-31 Borkott Gmbh Fastening of handle to e.g. cutlery item, for permanent, precision result, is achieved by forming guide and location section for interlocking tang using special molding tool, and filling recesses with thermoplastic
USD435199S (en) * 1999-04-19 2000-12-19 Lifetime Hoan Corporation Handle for knives
US7228632B2 (en) * 2002-05-31 2007-06-12 Calphalon Corporation Cutlery implement
US20040123471A1 (en) * 2002-08-07 2004-07-01 Onion Kenneth J. Ergonomic knife
US7140110B2 (en) 2003-06-04 2006-11-28 Lake Ronald W Folding knife having a locking mechanism
US20060000314A1 (en) * 2004-06-30 2006-01-05 Henry Mark J Kitchen utensil and method of manufacture
US7322113B2 (en) * 2004-12-03 2008-01-29 Calphalon Corporation Cutlery implement and block
US20060117576A1 (en) * 2004-12-03 2006-06-08 Calphalon Corporation Cutlery implement
US20170165850A1 (en) * 2013-08-12 2017-06-15 Peter Rigas Control Kitchen Cutlery
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Also Published As

Publication number Publication date
DE3713958C2 (en) 1989-04-20
CA1310819C (en) 1992-12-01
EP0288923A1 (en) 1988-11-02
DE3860252D1 (en) 1990-08-02
US4955139A (en) 1990-09-11
DE3713958A1 (en) 1988-11-10
ES2015978B3 (en) 1990-09-16

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