EP2250002B1 - Pliers as middle cutter or side cutter - Google Patents

Pliers as middle cutter or side cutter Download PDF

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Publication number
EP2250002B1
EP2250002B1 EP09700405.5A EP09700405A EP2250002B1 EP 2250002 B1 EP2250002 B1 EP 2250002B1 EP 09700405 A EP09700405 A EP 09700405A EP 2250002 B1 EP2250002 B1 EP 2250002B1
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EP
European Patent Office
Prior art keywords
pliers
cover plate
jaws
limbs
bend
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EP09700405.5A
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German (de)
French (fr)
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EP2250002A1 (en
Inventor
Ralf Putsch
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Knipex Werk C Gustav Putsch KG
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Knipex Werk C Gustav Putsch KG
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Publication of EP2250002A1 publication Critical patent/EP2250002A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B17/00Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06Joints

Definitions

  • the invention relates to a pair of pliers such as a center cutter or a side cutter with pliers jaws trained, a work area having forceps jaws, wherein the gripping portions having and cross-trained pliers legs are pivotally mounted around a lug connected bearing pin and the jaws working area side of the tab and the crossing region of the pliers legs are formed on the other side of the tab.
  • This particular high-gear pliers are addressed, which include pliers such as pressing tongs and crimping pliers.
  • Such a pair of pliers is for example from EP 331 927 B1 known.
  • the disclosure of this document is hereby incorporated in the disclosure of the present application with respect to the basic structure of the forceps, in particular also with regard to the tooth gap intervention and the course of the pliers legs and the basic cohesion by means of a tab, also for the purpose of features of the prior art document Claims of the present application to include.
  • the state of the art is also on the US 2,806,394 A. to refer.
  • the invention has the object to provide such a pair of pliers with regard to advantageous handling.
  • the angling results in an advantageously favorable and improved handling, such as in the case that the forceps must be set so that the grip area encompassing the user's finger would already collide with a pad or an installation.
  • the angling allows a favorable disintegration of the working plane and the level or the height range by the user's fingers include the handles.
  • the fact that the bend is formed on the handle side of the tab, the cutting area and also the tab area of the known pliers can remain unchanged.
  • the favorable cutting properties for example, in the case of a center or side cutter are retained. In particular, is also upper and lower sides given a favorable cutting clearance.
  • the crossover region of the pliers legs runs on the handle side of the bend.
  • the gripping areas thus run in a side view together with the crossing region of the pliers legs practically straight through.
  • To the tab is then, preferably due to a bending deformation, in which also preferably uniformly continuous pliers leg realized the bending, so that the adjoining region of the pliers legs, which is also referred to as the head portion of the pliers, compared to the combined region of the grip areas and the Crossover area extends in another pivot plane.
  • the jaws can also be held together with only one, arranged on one side tab.
  • placing the jaw is made possible directly on the working surface, when the one tab is arranged on the upper side.
  • the one tab can also be arranged on the underside and thus allow in the top-side area the convenient approach to a workpiece or the introduction into a working space.
  • the tab is arranged on the inside when an angling is provided. This means on the inside angle in the side view. So in the room that encloses the smaller angle.
  • the backs of the forceps jaws opposite the tab form a common bearing surface, which due to freedom of construction can reach a workpiece or a base directly in contact with it.
  • the backs of the pliers jaws which basically, As also mentioned above, which may be "top sides", in this case are preferably aligned with one another, thus forming a common support plane in any case in a substantial part of the rear side surface. In this support level, a part or the entire cross-over area back of a pliers limb may be included in the crossover area. Due to the intersecting arrangement of this back of the forceps leg in the said area also results in an additional support stabilization.
  • the storage of the jaws is further formed by means of a jaw engaging the jaw teeth to each other gullet engagement.
  • This tooth gap engagement is preferably formed by a roller body.
  • This roller body can be formed on one of the jaws or as a separate part, then preferably as a basically cylinder-like bolt provided.
  • this bearing pin is stepped.
  • Such a stepped design makes it possible to hold the bearing pin form-fitting even with the arrangement of only one tab. While it is prevented from moving in one direction by the tab, it is prevented from moving in the direction of its longitudinal axis by the gradation in the other direction.
  • the gradation need not be formed in the sense of a subsequent subsequent reduction in diameter. It can also be formed only by a groove in which engages about a projection of the jaws.
  • an end face of one of the bearing bolts can form a partial region of a rear side surface of a pliers jaw or can be arranged offset relative to this. The latter then preferred in the sense that there is a return from the back surface.
  • the other end portion of the bearing pin may be formed rietkopfartig.
  • Shown and described is designed as a central cutter pliers 1 with two pliers limbs, the grip areas 2, 3 form, which grip areas 2, 3 each continue first in a crossover area K of the pliers legs and then in a jaw 4, 5 material uniform.
  • the pliers legs are forgings.
  • Each grip area 2, 3 or jaw 4, 5 is rotatably mounted on a bearing pin 6, 7.
  • the bearing pins 6, 7 extend transversely to a pivoting plane of the jaws in the front cutting area of the jaws.
  • the gripping areas 2, 3 cross each other before they pass, corresponding to the change in their lateral relative position to one another, into the area of the hinge 8 connecting the hinge pins 7, 6.
  • the bearing pin 6, 7 enforce cross-section through holes of the tab 8.
  • the substantially long rectangular shaped tab 8 extends with its longer side transversely to the longitudinal extent of the grip areas 2, 3rd
  • the bearing pins 6, 7 have this one-sided (see Fig. 4 ) Heads 9 on and on the other side rivet formations 10.
  • the heads are designed frustoconical.
  • the Nietausformungen transversely rounded.
  • the tab 8 In the area of the work area of the jaws 4, 5 forming, mutually facing cutting edges 11, 12, the tab 8 has a rounded niche 13.
  • the latter for example, advantageous with regard to a centering Effect on an object to be cut, such as wire.
  • the jaws 4, 5 are visible working area side of the tab 8 formed while the crossing region K of the pliers legs on the other side of the tab 8, handle area side of the tab 8, is formed.
  • roller body 14 forms a kind of tooth gap engagement between the cutting jaws 11 and 12.
  • the roller body 14 is basically cylindrical in shape. Its edges are beveled.
  • the axial length of the roller body 14 corresponds approximately to the clear distance of the underside of the tab 8 to the bearing surface 15 formed by the back of the jaws 4, 5, see, for example FIGS. 4 to 6 , Preferably, the length is slightly lower.
  • the thus extending transversely to the cutting edges 11, 12 cylindrical roller body 14 sits each proportionately in a correspondingly from two cavity sections 16, 17, see, for example Fig. 8 , cutting 11, 12 formed penetration cavity. Since the cutting edges 11, 12 are wedge-shaped and the roller body 14 is cylindrical in shape, the cavity sections 16, 17 in the exemplary embodiment have a lenticular wall contour.
  • the roller body 14 may not only be formed as a separate part, as in the embodiment, but also firmly connected to one of the jaws or even made integral with it. Only the other jaw then has the recess 16.
  • the handle side behind the tab 8 subsequent cranked crossing region K of the handle portions 2, 3 is compared to the handle and baking zone significantly widened (see about plan view Fig. 1 ). As a rule, however, the surfaces of the forceps arms in this crossover region K do not lie on top of each other, but move at a distance from one another.
  • each handle side of the tab 8 is formed.
  • the section of the forceps arms adjoining the bend A on both sides run in different pivot planes E1-E1 or E2-E2.
  • the pivot planes E1-E1 and E2-E2 intersect in the area of the bend A.
  • FIGS. 1 to 3 and 7 . 8th also refer in each case to this embodiment
  • the planes E1-E1 and E2-E2 enclose with each other an angle alpha that is less than 180 °.
  • the respective bend A is created in further detail by a bending deformation 18.
  • the bending deformation 18 is realized in the thickness range of the forceps limbs, which is significantly reduced compared to the grip areas 2, 3.
  • Fig. 5 also - seen from the tab 8 - in front of the trained in a pliers leg stage S, on the one hand to Crossing the pliers legs is required, on the other hand, in the other pliers leg, see Fig. 1 , is provided as a stabilizing material accumulation.
  • the notch-like incision between the tab and the step S or the related material accumulation of the other pliers limb is used in this case.
  • the thickness reduction is 10 to 70%, preferably about 40 to 50% of the thickness in the grip area 2.3. With reference to the larger percentage range, all intermediate values are also included in the disclosure.
  • the pliers 1 has only one tab 8. This tab 8 is based on the angle alpha, see. FIGS. 5, 6 , which characterizes the bend A respectively, arranged in the angular interior.
  • the jaws 4, 5 form a common planar support surface 15.
  • This support surface 15 extends in the embodiment, as can be seen, over virtually the entire transverse region of the combined jaws 4, 5 and in the longitudinal direction of the pliers from a point 19 to the bend A.
  • This support level is also free of body. It is therefore not disturbed by protruding pin sections or rivet heads. It is therefore suitable for direct contact with a workpiece or a support on a pad.
  • Fig. 6 is also the cross-over area K, or the relevant back, included in the support surface 15.
  • the embodiment of the Fig. 5 only the rear side region of the pliers limbs or the pliers jaws 4, 5 formed thereby extending from the tip 19 to the bend A are included in the bearing surface 15.
  • angle alpha is between 110 ° and 175 °.
  • the mentioned heads 9 of the tab 8 passing through the bearing pin 6, 7 form a planar lower, outboard boundary surface, which also rests in the said support surface 15 or this opposite, in the direction of the tab 8 is optionally set back slightly.
  • roller body 14 forms a lower end face, which also rests in the support surface 15 or, as in the embodiment, this is slightly set back in the direction of the tab 8.
  • the roller body 14 itself is stepped. It has an upper, larger diameter portion 14a and a lower, smaller diameter portion 14b, see Fig. 4 ,

Description

Die Erfindung betrifft eine Zange wie einen Mittenschneider oder einen Seitenschneider mit an Zangenschenkeln ausgebildeten, einen Arbeitsbereich aufweisenden Zangenbacken, wobei die Griffbereiche aufweisenden und sich überkreuzend ausgebildeten Zangenschenkel um durch eine Lasche verbundene Lagerbolzen schwenkbar gelagert sind und die Zangenbacken arbeitsbereichseitig der Lasche und der Kreuzungsbereich der Zangenschenkel auf der anderen Seite der Lasche ausgebildet sind. Hiermit sind insbesondere hochübersetzte Zangen angesprochen, zu denen auch Zangen wie Presszangen und Crimpzangen zählen.The invention relates to a pair of pliers such as a center cutter or a side cutter with pliers jaws trained, a work area having forceps jaws, wherein the gripping portions having and cross-trained pliers legs are pivotally mounted around a lug connected bearing pin and the jaws working area side of the tab and the crossing region of the pliers legs are formed on the other side of the tab. This particular high-gear pliers are addressed, which include pliers such as pressing tongs and crimping pliers.

Eine derartige Zange ist beispielsweise aus der EP 331 927 B1 bekannt. Der Offenbarungsgehalt dieser Druckschrift wird hiermit hinsichtlich des grundsätzlichen Aufbaus der Zange, insbesondere auch hinsichtlich des Zahnlückeneingriffs und des Verlaufs der Zangenschenkel sowie des grundsätzlichen Zusammenhaltes mittels einer Lasche, vollinhaltlich in die Offenbarung vorliegender Anmeldung mit einbezogen, auch zu dem Zweck, Merkmale der vorbekannten Druckschrift in Ansprüche vorliegender Anmeldung mit einzubeziehen. Zum Stand der Technik ist auch auf die US 2 806 394 A zu verweisen.Such a pair of pliers is for example from EP 331 927 B1 known. The disclosure of this document is hereby incorporated in the disclosure of the present application with respect to the basic structure of the forceps, in particular also with regard to the tooth gap intervention and the course of the pliers legs and the basic cohesion by means of a tab, also for the purpose of features of the prior art document Claims of the present application to include. The state of the art is also on the US 2,806,394 A. to refer.

Aus der US 6 918 324 B2 ist eine Zange mit einem Gewerbebolzen bekannt, um welchen die Zangenschenkel schwenkbar sind. Die Griffbereiche sind gelenkig an vom Gewerbebolzen sich griffseitig erstreckenden Abschnitten angelenkt, für eine Verschwenkung quer zur Schwenkebene der Zangenschenkel. Bei der aus der US 7 249 752 B1 bekannten Zange ist in gleicher Weise eine Verschwenkbarkeit der Zangenschenkel um nur einen Gewerbebolzen vorgesehen. Die Überkreuzung der Zangenschenkel ist im Gewerbebereich ausgebildet.From the US Pat. No. 6,918,324 B2 a pliers with a commercial bolt is known, around which the pliers legs are pivotable. The grip areas are hinged to the commercial bolt extending from the handle side extending portions for pivoting transversely to the pivot plane of the pliers legs. At the time of the US Pat. No. 7,249,752 B1 known pliers pivoting of the pliers legs is provided in the same way to only one commercial bolt. The crossover of the pliers legs is formed in the commercial area.

Aus der US 1 034 345 A ist ein Schneidwerkzeug bekannt, bei welchem keine Überkreuzung von Griffschenkeln vorgesehen ist. Ein vergleichbares Schneidwerkzeug ist auch aus der US 509 125 bekannt, wobei hier zwar eine Abbiegung von Griffschenkeln vorgesehen ist, aber wiederum keine Überkreuzführung von Schenkeln.From the US 1 034 345 A a cutting tool is known in which no crossover of gripping legs is provided. A comparable cutting tool is also from the US 509,125 known, although here a turn of gripping arms is provided, but again no crossover of legs.

Ausgehend von dem zunächst genannten Stand der Technik stellt sich der Erfindung die Aufgabe, eine derartige Zange hinsichtlich vorteilhafter Handhabbarkeit anzugeben.Based on the initially mentioned prior art, the invention has the object to provide such a pair of pliers with regard to advantageous handling.

Diese Aufgabe ist beim Gegenstand des Anspruches 1 gelöst, wobei darauf abgestellt ist, dass griffseitig bezüglich der Lasche in den Zangenschenkeln eine Abwinklung ausgebildet ist in welcher hierdurch geschaffene unterschiedliche Schwenkebenen der Zangenschenkel sich kreuzen, wobei in einer Schwenkebene die Griffbereiche und in einer anderen Schwenkebene sich arbeitsbereichseitig der Abwinklung erstreckende Bereiche der Zangenschenkel verlaufen und dass der Überkreuzungsbereich der Zangenschenkel griffseitig der Abwinklung verläuft.This object is achieved in the subject matter of claim 1, wherein it is based on the handle side with respect to the tab in the pliers legs an angled portion is formed in which created thereby different pivot planes of the pliers legs intersect, wherein in a pivot plane, the grip areas and in another pivoting plane itself Run on the working area side of the bend extending portions of the forceps arms and that the crossover region of the forceps arms grip side of the bend runs.

Aufgrund der Abwinklung ergibt sich eine vorteilhaft günstige und verbesserte Handhabbarkeit, etwa in dem Falle, dass die Zange so angesetzt werden muss, dass die den Griffbereich umfassenden Finger des Benutzers bereits mit einer Unterlage oder einem Einbau kollidieren würden. Die Abwinklung ermöglicht ein vorteilhaftes Auseinanderfallen der Arbeitsebene und der Ebene bzw. des Höhenbereiches, indem die Finger des Benutzers die Griffe umfassen. Dadurch, dass die Abwinklung griffseitig der Lasche ausgeformt ist, kann der Schneidenbereich und auch der Laschenbereich der bekannten Zange unverändert bleiben. Die günstigen Schneideigenschaften etwa im Falle eines Mitten- oder Seitenschneiders bleiben erhalten. Insbesondere ist auch ober- und unterseitig ein günstiger Schneidfreiraum gegeben. Der Überkreuzungsbereich der Zangenschenkel verläuft griffseitig der Abwinklung. Die Griffbereiche laufen also in einer Seitenansicht zusammen mit dem Überkreuzungsbereich der Zangenschenkel praktisch geradlinig durch. Zu der Lasche zu ist sodann, bevorzugt aufgrund einer Biegeverformung, in dem auch bevorzugt materialeinheitlich durchlaufenden Zangenschenkel die Abwinklung realisiert, so dass der sich anschließende Bereich der Zangenschenkel, der auch zusammengefasst als Kopfbereich der Zange anzusprechen ist, gegenüber dem kombinierten Bereich der Griffbereiche und des Überkreuzungsbereichs sich in einer anderen Schwenkebene erstreckt.Due to the angling results in an advantageously favorable and improved handling, such as in the case that the forceps must be set so that the grip area encompassing the user's finger would already collide with a pad or an installation. The angling allows a favorable disintegration of the working plane and the level or the height range by the user's fingers include the handles. The fact that the bend is formed on the handle side of the tab, the cutting area and also the tab area of the known pliers can remain unchanged. The favorable cutting properties, for example, in the case of a center or side cutter are retained. In particular, is also upper and lower sides given a favorable cutting clearance. The crossover region of the pliers legs runs on the handle side of the bend. The gripping areas thus run in a side view together with the crossing region of the pliers legs practically straight through. To the tab is then, preferably due to a bending deformation, in which also preferably uniformly continuous pliers leg realized the bending, so that the adjoining region of the pliers legs, which is also referred to as the head portion of the pliers, compared to the combined region of the grip areas and the Crossover area extends in another pivot plane.

Die Zangenbacken können auch nur mit einer, einseitig angeordneten Lasche zusammengehalten sein. Hiermit ist ein Aufsetzen der Zangenbacke unmittelbar auf den Arbeitsuntergrund ermöglicht, wenn die eine Lasche oberseitig angeordnet ist. Grundsätzlich kann die eine Lasche auch unterseitig angeordnet sein und so im oberseitigen Bereich die günstige Heranführung an ein Werkstück oder die Einführung in einen Arbeitsraum ermöglichen.The jaws can also be held together with only one, arranged on one side tab. Hereby placing the jaw is made possible directly on the working surface, when the one tab is arranged on the upper side. In principle, the one tab can also be arranged on the underside and thus allow in the top-side area the convenient approach to a workpiece or the introduction into a working space.

Weiter bevorzugt sind an der Zange auch nur zwei unterschiedliche Schwenkebenen ausgebildet.More preferably, only two different pivot planes are formed on the pliers.

Weiter ist bevorzugt, dass die Lasche auf der Innenseite angeordnet ist, wenn eine Abwinklung vorgesehen ist. Dies bedeutet auf der Winkel-Innenseite in der Seitenansicht. Also in dem Raum, der den kleineren Winkel einschließt.It is further preferred that the tab is arranged on the inside when an angling is provided. This means on the inside angle in the side view. So in the room that encloses the smaller angle.

Weiter ist auch bevorzugt, dass die der Lasche gegenüberliegenden Rückseiten der Zangenbacken eine gemeinsame Auflagefläche bilden, die aufgrund von Aufbautenfreiheit in eine unmittelbare Anlage an ein Werkstück oder eine Unterlage gelangen kann. Die Rückseiten der Zangenbacken, welche grundsätzlich, wie oben auch angesprochen, die "Oberseiten" sein können, gehen hierbei bevorzugt fluchtend ineinander über, bilden also jedenfalls in einem wesentlichen Teil der Rückseitenfläche eine gemeinsame Auflageebene aus. In diese Auflageebene kann auch ein Teil oder die gesamte Überkreuzungsbereich-Rückseite eines Zangenschenkels im Überkreuzungsbereich einbezogen sein. Aufgrund der kreuzenden Anordnung dieser Rückseite des Zangenschenkels in dem genannten Bereich ergibt sich auch eine zusätzliche Auflage-Stabilisierung.Furthermore, it is also preferred that the backs of the forceps jaws opposite the tab form a common bearing surface, which due to freedom of construction can reach a workpiece or a base directly in contact with it. The backs of the pliers jaws, which basically, As also mentioned above, which may be "top sides", in this case are preferably aligned with one another, thus forming a common support plane in any case in a substantial part of the rear side surface. In this support level, a part or the entire cross-over area back of a pliers limb may be included in the crossover area. Due to the intersecting arrangement of this back of the forceps leg in the said area also results in an additional support stabilization.

Die Lagerung der Zangenbacken ist weiter mittels eines die Zangenbacken zueinander fesselnden Zahnlücken-Eingriffs gebildet. Dieser Zahnlückeneingriff ist bevorzugt durch einen Walzenkörper gebildet. Dieser Walzenkörper kann an eine der Zangenbacken angeformt sein oder auch als gesondertes Teil, dann bevorzugt als grundsätzlich zylinderartiger Bolzen, vorgesehen sein.The storage of the jaws is further formed by means of a jaw engaging the jaw teeth to each other gullet engagement. This tooth gap engagement is preferably formed by a roller body. This roller body can be formed on one of the jaws or as a separate part, then preferably as a basically cylinder-like bolt provided.

Bei Ausbildung des Zahnlückeneingriffs durch den gesonderten Bolzen ist weiter bevorzugt, dass dieser Lagerbolzen gestuft ausgebildet ist. Eine solche gestufte Ausbildung ermöglicht es, den Lagerbolzen auch bei Anordnung nur einer Lasche formschlüssig zu haltern. Während er an einer Bewegung in eine Richtung durch die Lasche gehindert ist, ist er an einer Bewegung - in Richtung seiner Längsachse - in der anderen Richtung durch die Abstufung gehindert. Die Abstufung muss nicht im Sinne einer sich dann anschließenden durchgehenden Durchmesserverringerung gebildet sein. Sie kann auch lediglich durch eine Nut gebildet sein, in die etwa ein Vorsprung der Zangenbacken eingreift.When forming the tooth gap engagement by the separate bolt is further preferred that this bearing pin is stepped. Such a stepped design makes it possible to hold the bearing pin form-fitting even with the arrangement of only one tab. While it is prevented from moving in one direction by the tab, it is prevented from moving in the direction of its longitudinal axis by the gradation in the other direction. The gradation need not be formed in the sense of a subsequent subsequent reduction in diameter. It can also be formed only by a groove in which engages about a projection of the jaws.

In allgemeinerer Form ist vorgesehen, dass eine Formschlusshalterung des Lagerbolzens zum einen durch Zusammenwirkung mit der Lasche und zum anderen durch Zusammenwirken mit den Zangenbacken erreicht ist.In a more general form it is provided that a form-fitting mounting of the bearing pin is achieved on the one hand by cooperation with the tab and on the other by cooperation with the jaws.

Hinsichtlich der Halterung der bevorzugt einen Lasche mittels der Lagerbolzen ist weiter bevorzugt vorgesehen, dass diese nietartig in den Zangenbacken gehaltert sind. Hierbei kann weiter eine Stirnfläche eines der Lagerbolzen einen Teilbereich einer Rückseitenfläche einer Zangenbacke bilden oder dieser gegenüber versetzt angeordnet sein. Letzteres dann bevorzugt in dem Sinne, dass sich ein Rücksprung gegenüber der Rückseitenfläche ergibt. Der andere Endbereich des Lagerbolzens kann nietkopfartig geformt sein.With regard to the mounting of preferably a tab by means of the bearing pin is further preferred that they are riveted held in the jaws. In this case, furthermore, an end face of one of the bearing bolts can form a partial region of a rear side surface of a pliers jaw or can be arranged offset relative to this. The latter then preferred in the sense that there is a return from the back surface. The other end portion of the bearing pin may be formed rietkopfartig.

Nachstehend ist die Erfindung des Weiteren anhand der beigefügten Zeichnung, die jedoch lediglich ein Ausführungsbeispiel darstellt, erläutert. Hierbei zeigt:

Fig. 1
eine perspektivische Ansicht der Zange;
Fig. 2
eine Draufsicht auf die Zange;
Fig. 3
eine Ansicht gemäß Fig. 2 betreffend die Rückseite;
Fig. 4
einen Querschnitt durch den Gegenstand der Fig. 3, geschnitten entlang der Linie IV-IV;
Fig. 5
eine Seitenansicht der Zange, betreffend den Kopfbereich, mit einem Teilabschnitt der sich griffbereichseitig an die Lasche anschließenden Zangenschenkel, mit einer ersten Anordnung der Abwinklung;
Fig. 6
eine Darstellung gemäß Fig. 5, mit einer zweiten Anordnung der Abwinklung;
Fig. 7
eine Darstellung der Zange in geöffnetem Zustand;
Fig. 8
eine Darstellung gemäß Fig. 6 die Rückseite darstellend.
In the following, the invention will be explained further with reference to the attached drawing, which, however, represents only one embodiment. Hereby shows:
Fig. 1
a perspective view of the pliers;
Fig. 2
a plan view of the pliers;
Fig. 3
a view according to Fig. 2 concerning the back;
Fig. 4
a cross section through the subject of Fig. 3 cut along the line IV-IV;
Fig. 5
a side view of the forceps, concerning the head portion, with a portion of the grip area side of the tongue adjoining pliers legs, with a first arrangement of the bend;
Fig. 6
a representation according to Fig. 5 with a second arrangement of the bend;
Fig. 7
a representation of the pliers in the open state;
Fig. 8
a representation according to Fig. 6 showing the back.

Dargestellt und beschrieben ist eine als Mittenschneider ausgebildete Zange 1 mit zwei Zangenschenkeln, die Griffbereiche 2, 3 ausbilden, welche Griffbereiche 2, 3 sich jeweils zunächst in einen Überkreuzungsbereich K der Zangenschenkel und dann in eine Zangenbacke 4, 5 materialeinheitlich fortsetzen. Die Zangenschenkel sind Schmiedestücke. Jeder Griffbereich 2, 3 bzw. Zangenbacke 4, 5 ist auf einem Lagerbolzen 6, 7 drehgelagert. Die Lagerbolzen 6, 7 erstrecken sich quer zu einer Verschwenkebene der Zangenbacken im vorderen Schneidenbereich der Zangenbacken.Shown and described is designed as a central cutter pliers 1 with two pliers limbs, the grip areas 2, 3 form, which grip areas 2, 3 each continue first in a crossover area K of the pliers legs and then in a jaw 4, 5 material uniform. The pliers legs are forgings. Each grip area 2, 3 or jaw 4, 5 is rotatably mounted on a bearing pin 6, 7. The bearing pins 6, 7 extend transversely to a pivoting plane of the jaws in the front cutting area of the jaws.

Die Griffbereiche 2, 3 überkreuzen sich gelenkzapfenfrei bevor sie, entsprechend nach Änderung ihrer Seiten-Relativlage zueinander, in den Bereich der die Gelenkbolzen 7, 6 verbindenden Lasche 8 übergehen. Die Lagerbolzen 6, 7 durchsetzen querschnittsangepasste Durchgangsbohrungen der Lasche 8. Die Lasche 8, die nur einseitig, gemäß Fig. 1 auf der Oberseite der dort dargestellten Zange, angeordnet ist, ist plattenartig ausgebildet. Die im Wesentlichen lang rechteckig gestaltete Lasche 8 erstreckt sich mit ihrer längeren Seite quer zur Längserstreckung der Griffbereiche 2, 3.The gripping areas 2, 3 cross each other before they pass, corresponding to the change in their lateral relative position to one another, into the area of the hinge 8 connecting the hinge pins 7, 6. The bearing pin 6, 7 enforce cross-section through holes of the tab 8. The tab 8, the only one side, according to Fig. 1 is arranged on the top of the pliers shown there, is plate-like. The substantially long rectangular shaped tab 8 extends with its longer side transversely to the longitudinal extent of the grip areas 2, 3rd

Zur Fixierung der Lagerbolzen 6, 7 weisen diese einseitig (vgl. etwa Fig. 4) Köpfe 9 auf und anderseitig Nietausformungen 10. Die Köpfe sind kegelstumpfförmig gestaltet. Die Nietausformungen quer verrundet.For fixing the bearing pins 6, 7 have this one-sided (see Fig. 4 ) Heads 9 on and on the other side rivet formations 10. The heads are designed frustoconical. The Nietausformungen transversely rounded.

Im Bereich der den Arbeitsbereich der Zangenbacken 4, 5 bildenden, gegeneinander gerichteten Schneiden 11, 12 weist die Lasche 8 eine ausgerundete Nische 13 auf. Letzteres beispielsweise vorteilhaft im Hinblick auf eine zentrierende Wirkung für einen zu schneidenden Gegenstand wie beispielsweise Draht.In the area of the work area of the jaws 4, 5 forming, mutually facing cutting edges 11, 12, the tab 8 has a rounded niche 13. The latter, for example, advantageous with regard to a centering Effect on an object to be cut, such as wire.

Die Zangenbacken 4, 5 sind ersichtlich arbeitsbereichseitig der Lasche 8 ausgebildet während der Kreuzungsbereich K der Zangenschenkel auf der anderer Seite der Lasche 8, griffbereichsseitig der Lasche 8, ausgebildet ist.The jaws 4, 5 are visible working area side of the tab 8 formed while the crossing region K of the pliers legs on the other side of the tab 8, handle area side of the tab 8, is formed.

Im gleichen Abstand zu den Lagerbolzen 6, 7 ist zwischen diesen ein Walzenkörper 14, vgl. etwa Figuren 3, 4 und 7, eingelagert. Der Walzenkörper 14 bildet eine Art Zahnlückeneingriff zwischen den Schneidbacken 11 und 12. Der Walzenkörper 14 ist grundsätzlich zylindrischer Gestalt. Seine Kanten sind gefast.At the same distance from the bearing pins 6, 7 is between these a roller body 14, see. approximately Figures 3 . 4 and 7 , stored. The roller body 14 forms a kind of tooth gap engagement between the cutting jaws 11 and 12. The roller body 14 is basically cylindrical in shape. Its edges are beveled.

Die axiale Länge des Walzenkörpers 14 entspricht etwa dem lichten Abstand der Unterseite der Lasche 8 bis zur durch die Rückseite der Zangenbacken 4, 5 gebildeten Auflagefläche 15, siehe etwa Figuren 4 bis 6. Bevorzugt ist die Länge etwas geringer. Der somit sich quer zu den Schneiden 11, 12 erstreckende zylinderförmige Walzenkörper 14 sitzt je anteilig in einer entsprechend aus zwei Höhlungsabschnitten 16, 17, siehe etwa Fig. 8, der Schneiden 11, 12 gebildete Durchdringungshöhlung. Da die Schneiden 11,12 keilförmig gestaltet sind und der Walzenkörper 14 zylindrischer Gestalt ist, weisen die Höhlungsabschnitte 16, 17 beim Ausführungsbeispiel eine linsenförmige Wandungskontur auf.The axial length of the roller body 14 corresponds approximately to the clear distance of the underside of the tab 8 to the bearing surface 15 formed by the back of the jaws 4, 5, see, for example FIGS. 4 to 6 , Preferably, the length is slightly lower. The thus extending transversely to the cutting edges 11, 12 cylindrical roller body 14 sits each proportionately in a correspondingly from two cavity sections 16, 17, see, for example Fig. 8 , cutting 11, 12 formed penetration cavity. Since the cutting edges 11, 12 are wedge-shaped and the roller body 14 is cylindrical in shape, the cavity sections 16, 17 in the exemplary embodiment have a lenticular wall contour.

Wie aus einem Vergleich etwa der Figuren 1 und 7 hervorgeht, wandert der Walzenkörper 14 beim Öffnen der Zange optisch nach vorne und tritt teilweise unter der Lasche 8 hervor. Tatsächlich bewegt sich aber die Lasche 8 etwas nach hinten, vgl. auch Figuren 3 und 8 betreffend die Unteransicht.How about a comparison of the FIGS. 1 and 7 shows, the roller body 14 moves visually forward when opening the pliers and partially protrudes under the tab 8. In fact, however, the flap 8 moves backwards slightly, cf. also Figures 3 and 8th regarding the bottom view.

Der Walzenkörper 14 kann nicht nur als gesondertes Teil ausgebildet sein, wie beim Ausführungsbeispiel, sondern auch mit einer der Zangenbacken fest verbunden oder sogar integral mit dieser hergestellt sein. Nur die andere Zangenbacke weist dann die Ausnehmung 16 auf.The roller body 14 may not only be formed as a separate part, as in the embodiment, but also firmly connected to one of the jaws or even made integral with it. Only the other jaw then has the recess 16.

Der griffseitig hinter der Lasche 8 anschließende verkröpfte Kreuzungsbereich K der Griffbereiche 2, 3 ist gegenüber der Griff- und Backenzone deutlich verbreitert (siehe etwa Draufsicht gemäß Fig. 1). In der Regel liegen die Flächen der Zangenschenkel in diesem Überkreuzungsbereich K aber nicht aufeinander auf, sondern bewegen sich mit Abstand zueinander.The handle side behind the tab 8 subsequent cranked crossing region K of the handle portions 2, 3 is compared to the handle and baking zone significantly widened (see about plan view Fig. 1 ). As a rule, however, the surfaces of the forceps arms in this crossover region K do not lie on top of each other, but move at a distance from one another.

Bezogen auf eine Seitenansicht, wie sie etwa in den Figuren 5 und 6 dargestellt ist, ist die Abwinklung A jeweils griffseitig der Lasche 8 ausgebildet. Hierdurch verlaufen die sich beidseitig an die Abwinklung A anschließenden Abschnitt der Zangenschenkel in unterschiedlichen Schwenkebenen E1-E1 bzw. E2-E2. Die Schwenkebenen E1-E1 und E2-E2 kreuzen sich im Bereich der Abwinklung A .Relative to a side view, as in the FIGS. 5 and 6 is shown, the bend A each handle side of the tab 8 is formed. As a result, the section of the forceps arms adjoining the bend A on both sides run in different pivot planes E1-E1 or E2-E2. The pivot planes E1-E1 and E2-E2 intersect in the area of the bend A.

Beim Ausführungsbeispiel der Fig. 5 (die Figuren 1 bis 3 und 7, 8 beziehen sich auch jeweils auf diese Ausführungsform) verlaufen die in der Seitenansicht insgesamt einheitlich plattenförmig erscheinenden Zangenbacken und der sich unterhalb der Lasche 8 erstreckende Bereich der Zangenschenkel in der Schwenkebene E1-E1 während der Überkreuzungsbereich K zusammen mit den Griffbereichen 2, 3 sich in der Schwenkebene E2-E2 erstreckt. Die Ebenen E1-E1 und E2-E2 schließen miteinander einen Winkel Alpha ein, der geringer als 180° ist.In the embodiment of Fig. 5 (the FIGS. 1 to 3 and 7 . 8th also refer in each case to this embodiment) extend in the side view as a whole uniformly plate-shaped jaws and extending below the tab 8 extending portion of the forceps arms in the pivot plane E1-E1 during the crossover area K together with the grip areas 2, 3 in the pivoting plane E2-E2 extends. The planes E1-E1 and E2-E2 enclose with each other an angle alpha that is less than 180 °.

Die jeweilige Abwinklung A ist in weiterer Einzelheit durch eine Biegeverformung 18 geschaffen. Die Biegeverformung 18 ist in dem gegenüber den Griffbereichen 2, 3 deutlich reduzierten Dickenbereich der Zangenschenkel realisiert. Im Fall der Ausführungsform gemäß Fig. 5 auch - gesehen von der Lasche 8 aus - vor der in einem Zangenschenkel ausgebildeten Stufe S, die einerseits zur Überkreuzung der Zangenschenkel erforderlich ist, andererseits, bei dem anderen Zangenschenkel, siehe etwa Fig. 1, als stabilisierende Materialanhäufung vorgesehen ist. Zur Abbiegung ist also in diesem Fall der kerbteilartige Einschnitt zwischen der Lasche und der Stufe S bzw. der diesbezüglichen Materialanhäufung des anderen Zangenschenkels genutzt.The respective bend A is created in further detail by a bending deformation 18. The bending deformation 18 is realized in the thickness range of the forceps limbs, which is significantly reduced compared to the grip areas 2, 3. In the case of the embodiment according to Fig. 5 also - seen from the tab 8 - in front of the trained in a pliers leg stage S, on the one hand to Crossing the pliers legs is required, on the other hand, in the other pliers leg, see Fig. 1 , is provided as a stabilizing material accumulation. For bending, therefore, the notch-like incision between the tab and the step S or the related material accumulation of the other pliers limb is used in this case.

Die Dickenreduzierung beträgt 10 bis 70 %, bevorzugt etwa 40 bis 50 % der Dicke im Griffbereich 2,3. Hierbei sind bezogen auf den größeren Prozentbereich auch alle Zwischenwerte in die Offenbarung mit eingeschlossen.The thickness reduction is 10 to 70%, preferably about 40 to 50% of the thickness in the grip area 2.3. With reference to the larger percentage range, all intermediate values are also included in the disclosure.

Die Zange 1 besitzt nur eine Lasche 8. Diese Lasche 8 ist bezogen auf den Winkel Alpha, vgl. Figuren 5, 6, der die Abwinklung A jeweils charakterisiert, im Winkelinnenraum angeordnet.The pliers 1 has only one tab 8. This tab 8 is based on the angle alpha, see. FIGS. 5, 6 , which characterizes the bend A respectively, arranged in the angular interior.

Auf der der Lasche 8 gegenüberliegenden Seite, der Rückseite der Zangenbacken 4, 5 bilden die Zangenbacken 4, 5 eine gemeinsame ebene Auflagefläche 15. Diese Auflagefläche 15 erstreckt sich beim Ausführungsbeispiel, wie ersichtlich, über praktisch den ganzen Querbereich der zusammengefassten Zangenbacken 4, 5 und in Längsrichtung der Zange von einer Spitze 19 bis zur Abwinklung A. Diese Auflageebene ist auch aufbautenfrei. Sie ist also nicht etwa gestört durch überstehende Zapfenabschnitte oder Nietköpfe. Sie ist daher für eine unmittelbare Anlage an einem Werkstück oder eine Auflage auf eine Unterlage geeignet.On the opposite side of the tab 8, the back of the jaws 4, 5, the jaws 4, 5 form a common planar support surface 15. This support surface 15 extends in the embodiment, as can be seen, over virtually the entire transverse region of the combined jaws 4, 5 and in the longitudinal direction of the pliers from a point 19 to the bend A. This support level is also free of body. It is therefore not disturbed by protruding pin sections or rivet heads. It is therefore suitable for direct contact with a workpiece or a support on a pad.

Beim Ausführungsbeispiel der Fig. 6 ist auch der Überkreuzungsbereich K, bzw. die diesbezügliche Rückseite, in die Auflagefläche 15 einbezogen. Dagegen ist beim Ausführungsbeispiel der Fig. 5 nur der sich von der Spitze 19 bis zur Abwinklung A erstreckende Rückseitenbereich der Zangenschenkel bzw. der hiervon gebildeten Zangenbacken 4, 5 in die Auflagefläche 15 einbezogen.In the embodiment of Fig. 6 is also the cross-over area K, or the relevant back, included in the support surface 15. In contrast, in the embodiment of the Fig. 5 only the rear side region of the pliers limbs or the pliers jaws 4, 5 formed thereby extending from the tip 19 to the bend A are included in the bearing surface 15.

In weiterer Einzelheit ist von Bedeutung, dass der Winkel Alpha zwischen 110° und 175° liegt. Bevorzugt zwischen 150° und 165°, wobei hierbei sämtliche Gradzahlen auch Bruchteile von Gradzahlen, des genannten ersten Bereiches in die Offenbarung eingeschlossen sind.In further detail, it is important that the angle alpha is between 110 ° and 175 °. Preferably between 150 ° and 165 °, in which case all degrees also fractions of degrees, of said first range are included in the disclosure.

Die genannten Köpfe 9 der die Lasche 8 durchsetzenden Lagerbolzen 6, 7 bilden eine ebenflächige untere, nach außen liegende Begrenzungsfläche aus, die ebenfalls in der genannten Auflagefläche 15 einliegt oder dieser gegenüber, in Richtung der Lasche 8 gegebenenfalls etwas zurückversetzt ist.The mentioned heads 9 of the tab 8 passing through the bearing pin 6, 7 form a planar lower, outboard boundary surface, which also rests in the said support surface 15 or this opposite, in the direction of the tab 8 is optionally set back slightly.

In gleicher Weise bildet der Walzenkörper 14 eine untere Stirnfläche aus, die ebenfalls in der Auflagefläche 15 einliegt oder, wie beim Ausführungsbeispiel, dieser gegenüber leicht in Richtung der Lasche 8 zurückversetzt ist.In the same way, the roller body 14 forms a lower end face, which also rests in the support surface 15 or, as in the embodiment, this is slightly set back in the direction of the tab 8.

Der Walzenkörper 14 selbst ist abgestuft ausgebildet. Er besitzt einen oberen durchmessergrößeren Bereich 14a und einen unteren durchmesserkleineren Bereich 14b, siehe Fig. 4.The roller body 14 itself is stepped. It has an upper, larger diameter portion 14a and a lower, smaller diameter portion 14b, see Fig. 4 ,

Da der Übergang zwischen den Bereichen 14a und 14b auf einer entsprechenden Schulter 20 der Zangenbacken 4, 5 aufliegt und andererseits, wie schon erwähnt, der Walzenkörper 14 nach oben durch die Lasche 8 überdeckt ist, ist der Walzenkörper14 somit formschlüssig im Zangenkopf gefangen.Since the transition between the regions 14a and 14b rests on a corresponding shoulder 20 of the jaws 4, 5 and on the other hand, as already mentioned, the roller body 14 is covered upwards by the tab 8, the roller body 14 is thus positively caught in the pliers head.

Claims (10)

  1. Pliers (1), such as a center cutter or a side cutter, having pliers jaws (4, 5) that are formed on pliers limbs and have a working region, the pliers limbs, which have gripping regions (2, 3) and are formed to cross over one another, being pivotably mounted by bearing bolts (6, 7) that connect a cover plate (8), and the pliers jaws being formed on the working region side of the cover plate (8) and the cross-over region (K) of the pliers limbs being formed on the other side of the cover plate (8), characterized in that a tangential bend (A), as seen in side view, is formed in the pliers limbs on the gripping side relative to the cover plate (8), different pivot planes (E1-E1) and (E2-E2) of the pliers limbs created thereby intersecting one another in the bend, the gripping regions (2, 3) running in one pivot plane (E2-E2) and regions of the pliers limbs extending on the working region side of the tangential bend (A) running in another pivot plane (E1-E1), and that cross-over region (K) of the pliers limbs runs on the gripping side of the tangential bend (A).
  2. Pliers according to claim 1, characterized in that the pliers jaws (4, 5) are held together by only one cover plate (8), located on one side.
  3. Pliers according to one of the claims 1 or 2, characterized in that the tangential bend is formed by a bendingly formed portion (18).
  4. Pliers according one of the claims 2 or 3, characterized in that the cover plate (8) is located on the inner side, with respect to the tangential bend.
  5. Pliers according to one of the claims 2 to 4, characterized in that the rear sides of the pliers jaws (4, 5), opposite from the cover plate (8), form a common planar contact face (15), which can be directly engaged against a workpiece or a base, because it is free of upstanding features.
  6. Pliers according to claim 5, characterized in that the contact face is formed, in each case in part, by a rear side of the cross-over region of a pliers limb.
  7. Pliers according one of the claims 1 to 6, characterized in that a roller member (14) is provided, that fixes the pliers jaws (4, 5) to one another.
  8. Pliers according to claim 7, characterized in that the roller member (14) is covered over, at least in part, by the cover plate (8).
  9. Pliers according one of the claims 7 or 8, characterized in that the roller member (14) is of stepped form.
  10. Pliers according one of the claim 1 to 9, characterized in that the cover plate (8) is held in the pliers jaws (4, 5) by means of the bearing bolts (6, 7) and in that one end face of a bearing bolt (6, 7) forms a part region of a rear side face of a pliers jaw (4, 5).
EP09700405.5A 2008-01-09 2009-01-07 Pliers as middle cutter or side cutter Active EP2250002B1 (en)

Applications Claiming Priority (2)

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DE102008003723.0A DE102008003723B4 (en) 2008-01-09 2008-01-09 tongs
PCT/EP2009/050135 WO2009087174A1 (en) 2008-01-09 2009-01-07 Pliers as middle cutter or side cutter

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EP2250002A1 EP2250002A1 (en) 2010-11-17
EP2250002B1 true EP2250002B1 (en) 2018-04-18

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US (1) US8479399B2 (en)
EP (1) EP2250002B1 (en)
CN (1) CN101965251B (en)
DE (1) DE102008003723B4 (en)
TW (1) TWI419771B (en)
WO (1) WO2009087174A1 (en)

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Publication number Publication date
TW200948551A (en) 2009-12-01
US20110005086A1 (en) 2011-01-13
WO2009087174A1 (en) 2009-07-16
US8479399B2 (en) 2013-07-09
DE102008003723B4 (en) 2018-11-22
CN101965251A (en) 2011-02-02
CN101965251B (en) 2013-03-13
EP2250002A1 (en) 2010-11-17
DE102008003723A1 (en) 2009-07-16
TWI419771B (en) 2013-12-21

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