EP0687530A1 - Knife with interchangeable blade especially for cutting carpet - Google Patents

Knife with interchangeable blade especially for cutting carpet Download PDF

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Publication number
EP0687530A1
EP0687530A1 EP95104890A EP95104890A EP0687530A1 EP 0687530 A1 EP0687530 A1 EP 0687530A1 EP 95104890 A EP95104890 A EP 95104890A EP 95104890 A EP95104890 A EP 95104890A EP 0687530 A1 EP0687530 A1 EP 0687530A1
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EP
European Patent Office
Prior art keywords
knife
flap
blade
handle body
knife blade
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Granted
Application number
EP95104890A
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German (de)
French (fr)
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EP0687530B1 (en
Inventor
Heinz-Peter Knoop
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Schlipkoter Michael Dr
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Schlipkoter Michael Dr
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Publication of EP0687530A1 publication Critical patent/EP0687530A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00Hand knives with one or more detachable blades

Definitions

  • the invention relates to a knife, in particular carpeting cutting knives, with a handle body and a blade holder which interchangeably holds therein a knife blade and which is overlapped by a flap which can be pivoted about a pivot axis.
  • the flap is assigned to a blade carrier and, together with it, is movable and spring-loaded in the retracting direction.
  • the flap which can be folded outwards about an articulation axis running transversely to the blade feed direction and parallel to the transverse axis of the handle body, is held in its closed position by means of a resilient locking pin connection.
  • This flap is less suitable for knives with which particularly high cutting pressures and tensile forces have to be transferred to the knife blade via the working hand. This is particularly the case with professional carpet cutting knives for floor installers. Knives of this type require frequent blade changes because of the relatively resistant material to be cut. For this reason, this group of users is demanding a knife in which the blade change can be carried out as quickly as possible, in an ergonomically more favorable manner and also in a manner which reliably prevents cuts.
  • DE-GM 69 48 045 discloses a non-generic, ergonomically unfavorably designed knife of small thickness, which essentially consists of a base plate made of steel strip and a cover plate which is connected to the base plate via two rivet pins with little play. A knife blade is clamped between this cover plate and the lower plate.
  • a two-armed lever is articulated on the lower plate, which has a chamfer on its shorter lever arm, which engages in a wedge shape in the space between the cover plate and the lower plate, whereby the knife blade is clamped between the lower plate and the cover plate in the closed position of the lever.
  • this knife Because of its ergonomically unfavorable shape, this knife has the disadvantage that its knife blade near the rivet pins tends to tilt or tilt when large lateral forces are exerted, such as can occur with a carpet cutting insert, since non-positive clamping only in the narrow tangential areas of the front edges of the cover plate and lower plate.
  • a knife of another type in which the knife blade (scalpel-like deburring blade) is arranged between a recess in the handle body and a handle part which can be swiveled by 90 ° about an axle bolt and which is parallel to the plane of the knife blade extending plane is arranged.
  • the knife blade is held by an eccentric with self-locking, which is arranged near the axle bolt in the swiveling handle part.
  • the grip part can be pivoted about an axis bolt running perpendicular to the plane of the knife blade in approximately the plane of the knife blade.
  • This embodiment has a relatively small clamping surface on the knife blade, which prevents the knife blade from being cut with high pressure and tensile forces, as is customary with a carpet knife.
  • either the other hand of the operator or a multiple grasping with the thumb or a finger of the working hand is required to open and pivot the handle part in the direction of the tip of the knife blade.
  • a knife of another type which does not have a flap, but in which the handle body is formed from two half-shells which are held together by a film hinge on one longitudinal edge and on the other longitudinal edge by means of locking knobs and locking grooves can be clipped together and hold a knife blade in their blade holder after this closing process.
  • the film hinge tends to tear and the locking knobs naturally loosen from their locking grooves.
  • the invention has for its object to provide a knife for particularly heavy professional cutting work, in particular a carpet cutting knife, which ensures a quick blade change in an ergonomically favorable manner and thereby safely avoids cutting injuries.
  • the pivot axis of the cutting edge is adjacent to the knife blade and its longitudinal axis of symmetry is arranged approximately in the cutting direction, the flap being lockable in its closed position by a pivot bolt adjacent to the back of the knife blade.
  • the knife blade can then be quickly removed with the other hand by the operator and replaced with a new one before the thumb of the working hand pivots the flap into its covering position about the pivot axis and then by pushing the thumb or a finger the pivot bar into its flap locking position shifts.
  • opening and closing the knife only takes a period of time from one to two seconds. At this time, the period for replacing the old with a new knife blade must be added. Since the knife blade is completely exposed when the flap is open, the knife blade can be changed just as quickly and without cuts.
  • the flap and the pivot bolt can be locked in their closed position under the action of inherently elastic, leaf spring-like forces. Due to this positive and form-locking self-locking effect, the blade is held securely in this locking position even with strong transverse forces applied perpendicular to its blade plane.
  • the swivel bolt can be pivoted about an axis of rotation which is attached to one of its ends and runs transversely to the plane of the knife blade and is advantageously arranged at its end facing away from the knife blade.
  • the swivel bolt has on its side facing the handle body a wart-shaped projection which, in the closed position of the flap, is assigned to an edge of a recess provided in it as a sash.
  • the flap and the pivot bolt are supported not only by their inherently elastic, leaf spring-like spring or by an additional spring, but also by the clamping force of the sash acting in a plane perpendicular thereto in the form of a wart-like projection in connection with an edge of the flap.
  • the pivot axis of the flap consists of projecting, integrally connected to it with eyelets and projecting eyelets of the handle body, which mutually engage in the recesses between the eyelets and either through a jointly penetrating thru axle or by positive and non-positive Clip together male-like projections in female-like recesses are pivotally connected to each other.
  • the flap covers not only the blade holder, but also a magazine space which is remote from it and is arranged in the handle body.
  • This magazine space advantageously has a raised support edge on a longitudinal side of the reserve knife blades arranged in it, which edge keeps it in a favorable inclined position. This allows the knife blades to be ergonomic conveniently removed from the magazine room and inserted into the blade holder.
  • the side view of the handle body is provided with a circular arc shape on its top side facing the back of the knife and on its underside behind the pivot axis of the flap with two undulating indentations and with an undulating elevation located between them, which continuously, e.g. sinusoidal, merge.
  • the width of an indentation corresponds approximately to the thickness of the middle index finger and the width of the rear indentation corresponds at least to the thickness of a little finger of a male person.
  • the thickness of the handle body between the end facing away from the knife blade and the support of the thumb of the operating hand is approximately the same width, whereas the thickness of the handle body then tapers from the thumb support in the direction of the knife blade tip.
  • This shape is known in principle from a different type of knife from DE 33 09 342 C1.
  • the knife 10 has a handle body 11 and a knife blade 12, which is held interchangeably in a blade holder 13.
  • the blade holder 13 is overlapped by a flap 15 that can be swiveled about a pivot axis 14 so that it can be closed.
  • the pivot axis 14 is adjacent to the cutting edge 12a of the knife blade 12 and its longitudinal axis 16 of symmetry is arranged approximately in the cutting direction according to the arrow x, the flap 15 in its closed position shown in FIGS. 1 and 2 from a pivot bolt adjacent to the back 12b of the knife blade 12 17 is locked.
  • the pivot bolt 17 can be pivoted about an axis of rotation 18 arranged at its end 17a and extending transversely to the plane of the knife blade 12, in the example shown perpendicular to the plane of the drawing.
  • the axis of rotation 18 could, although not ergonomically so favorable, be arranged at the other end 17b (here: free end 17b) of the pivot bolt 17.
  • a further reinforcement of these inherently elastic forces can also be achieved in that the pivot bolt 17 accordingly with leaf spring-like, elastic forces when pivoting in the direction of the arrow 19 of FIG. 3 in its closed position also presses against the side surface of the flap 15 facing it.
  • the flap 15 and the pivot bolt 17 act as leaf springs in opposite pressure directions transverse to the plane of the knife blade 12.
  • the invention also allows the flap 15 and the pivot bolt 17 in their closed position under the action of a spring acting on the flap 15 in the opening direction according to FIG. 3 in the form of a spiral spring, not shown, a cylindrical or conical coil spring or a leaf spring can be locked.
  • the swivel bolt 17 is provided on its lower surface facing the handle body 11 with a wart-like projection 20 which, in the closed position according to FIGS. 1 and 2, has an edge 15a of the flap 15 of a recess 21 arranged in the flap 15 (see Fig. 1) is assigned as a sash.
  • the wart-shaped projection 20 with its sliding edge 20a presses against the edge 15a of the flap 15, as a result of which a cantilever force is exerted on the edge 15a of the flap 15 approximately in the direction of the arrow y.
  • the recess 21 here represents a recess-like reduction in the thickness of a projection V of the flap 15 pointing toward the top 11a of the handle body 11.
  • the pivot axis 14 of the flap 15 consists of projecting, cohesively connected to it 22 and from projecting and likewise cohesively connected to the handle body 23, which engage each other in the recesses 24 between the eyelets 22, 23 and either by a jointly penetrating thru axle 25 or by positive and non-positive clipping together are pivotable.
  • one part of the eyelets is provided with matrix-like, for example dome-like recesses and the other part with male-like projections.
  • the flap 15 covers not only the blade receptacle 13 but also a magazine space 26 which is remote from the latter and is arranged in the handle body 11. Reserve blades, not shown, are stored in the magazine room 26.
  • a support edge 26c which is raised in relation to the inner surface 26b, is arranged on one long side, here 26a, of the magazine space 26. Because they rest with an edge on this support edge 26c, the reserve blades are held in an inclined position, which allows them to be removed quickly and avoid cuts.
  • the handle body 11 is in a side view on its top 11a facing the back of the knife 12b in adaptation to the palm 36 with a circular arc shape and on its underside 11b behind the pivot axis 14 of FIG Flap 15 is provided with two undulating indentations 27, 28 and an undulating elevation 29 located between them, which merge into one another continuously, approximately sinusoidally.
  • the width of the front indentation 27 corresponds approximately to the thickness of the index finger 34 and the rear indentation 28 corresponds at least to the thickness of a little finger 35 of the working hand 33 of a male person.
  • the thickness of the handle body 11 between the end 30 facing away from the knife blade 12 and the area 31 adjacent to the free end 17b of the swivel lock 17 is approximately the same width, whereas the width of the handle body 11 tapers from the area 31 to the knife tip 12d.
  • the flap 15 is opened in a flash in that the thumb 32 of the operating hand 33 pivots the swivel bolt 17 upward in the direction of the arrow 19 and immediately after pivoting with the thumb side surface grips the narrow upper edge 15b of the flap 15 in a frictional manner and with one perpendicular to the plane of the drawing extending pivoting movement of the thumb 32 in the position shown in FIG. 3 folds down.
  • the knife blade 12 which is thereby completely exposed can then quickly be grasped by the other hand of the operator and lifted out of the blade holder 13 and replaced by a new one.
  • the thumb 32 pivots the flap 15 with a sideways movement of the thumb 32 in the direction of the corresponding contact surface on the handle body 11 and pushes it in the next moment the swivel bolt 17 with the tip of the thumb 32 into the locking position according to FIGS. 1 and 2.
  • the thumb 32 assumes its working position by pivoting downward from its position according to FIG. 2 (when the locking bolt 17 has been locked) in a manner not shown, overlapping the pivot bolt 17 and flap 15 and finally adjacent to the underside of the handle on the index finger 34 comes to the plant.
  • the blade change can be not only extremely quick, but also ergonomically cheaper and avoid cuts.

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

Abstract

The cover pivot axis (14) is located next to the cutter (12a) of the knife blade (12). Its symmetrical longitudinal axis (16) extends approx. in the blade direction (x). The pivoted cover (15) is locked in closed position by a pivot bolt (17) which is next to the back (12b) of the knife blade. Cover and pivot bolt are automatically locked due to their own elastic leaf spring-like forces. Alternatively, they may be locked by a helical or leaf spring. The bolt is pivoted about a rotary axis (18), which extends at right angles to the plane of the knife blade.

Description

Die Erfindung betrifft ein Messer, insbesondere Teppichboden-Schneidmesser, mit einem Griffkörper und einer eine Messerklinge auswechselbar darin halternden Klingenaufnahme, die von einer um eine Schwenkachse abschwenkbaren Klappe verschließbar übergriffen ist.The invention relates to a knife, in particular carpeting cutting knives, with a handle body and a blade holder which interchangeably holds therein a knife blade and which is overlapped by a flap which can be pivoted about a pivot axis.

Bei einem bekannten Messer dieser Art nach der DE 36 22 343 C2 ist die Klappe einem Klingenträger zugeordnet und gemeinsam mit diesem beweglich sowie in Einfahrrichtung zugfederbelastet. Die Klappe, welche um eine quer zur Klingenvorschubrichtung und parallel zur Querachse des Griffkörpers verlaufende Anlenkungsachse nach außen abklappbar ist, wird über eine federnde Rastzapfenverbindung in ihrer Schließstellung gehalten. Diese Klappe ist für solche Messer weniger gut geeignet, mit denen über die Arbeitshand besonders hohe Schneiddrücke und Zugkräfte auf die Messerklinge übertragen werden müssen. Das ist insbesondere bei professionellen Teppichboden-Schneidmessern für Bodenverleger der Fall. Bei derartigen Messern ist wegen des relativ sehr widerstandsfähigen Schneidgutes ein häufiger Klingenwechsel erforderlich. Aus diesem Grunde wird von diesem Benutzerkreis ein Messer gefordert, bei welchem der Klingenwechsel möglichst rasch sowie in ergonomisch günstiger und außerdem in Schnittverletzungen sicher vermeidender Weise durchzuführen ist.In a known knife of this type according to DE 36 22 343 C2, the flap is assigned to a blade carrier and, together with it, is movable and spring-loaded in the retracting direction. The flap, which can be folded outwards about an articulation axis running transversely to the blade feed direction and parallel to the transverse axis of the handle body, is held in its closed position by means of a resilient locking pin connection. This flap is less suitable for knives with which particularly high cutting pressures and tensile forces have to be transferred to the knife blade via the working hand. This is particularly the case with professional carpet cutting knives for floor installers. Knives of this type require frequent blade changes because of the relatively resistant material to be cut. For this reason, this group of users is demanding a knife in which the blade change can be carried out as quickly as possible, in an ergonomically more favorable manner and also in a manner which reliably prevents cuts.

In dem DE-GM 69 48 045 ist ein gattungsfremdes, ergonomisch ungünstig gestaltetes Messer geringer Dicke offenbart, welches im wesentlichen aus einer Unterplatte aus Bandstahl und einer Deckplatte besteht, die mit der Unterplatte über zwei Nietstifte mit geringem Spiel verbunden ist. Zwischen dieser Deckplatte und der Unterplatte wird rein kraftschlüssig eine Messerklinge geklemmt. Zur Klemmung ist an der Unterplatte ein zweiarmiger Hebel angelenkt, der an seinem kürzeren Hebelarm eine Fase aufweist, die in den Zwischenraum zwischen Deckplatte und Unterplatte keilförmig eingreift, wodurch in der Schließlage des Hebels die Messerklinge zwischen Unterplatte und Deckplatte geklemmt wird. Wegen seiner ergonomisch ungünstigen Form ist dieses Messer mit dem Nachteil versehen, daß seine Messerklinge in der Nähe der Nietstifte bei großen ausgeübten Seitenkräften, wie sie bei einem Teppichboden-Schneideinsatz vorkommen können, zu einem Kippen oder Verkanten neigt, da eine kraftschlüssige Klemmung lediglich in den schmalen Tangentialbereichen der Vorderkanten von Deckplatte und Unterplatte erfolgt.DE-GM 69 48 045 discloses a non-generic, ergonomically unfavorably designed knife of small thickness, which essentially consists of a base plate made of steel strip and a cover plate which is connected to the base plate via two rivet pins with little play. A knife blade is clamped between this cover plate and the lower plate. For clamping, a two-armed lever is articulated on the lower plate, which has a chamfer on its shorter lever arm, which engages in a wedge shape in the space between the cover plate and the lower plate, whereby the knife blade is clamped between the lower plate and the cover plate in the closed position of the lever. Because of its ergonomically unfavorable shape, this knife has the disadvantage that its knife blade near the rivet pins tends to tilt or tilt when large lateral forces are exerted, such as can occur with a carpet cutting insert, since non-positive clamping only in the narrow tangential areas of the front edges of the cover plate and lower plate.

Aus dem DE-GM 93 10 886 ist ein Messer anderer Art bekannt, bei welchem die Messerklinge (skalpellartige Entgrateklinge) zwischen einer Ausnehmung im Griffkörper und einem davon um 90° um einen Achsbolzen abschwenkbaren Griffteil angeordnet ist, der in einer zur Ebene der Messerklinge parallel verlaufenden Ebene angeordnet ist. Bei diesem Messer wird die Messerklinge durch einen Exzenter mit Selbsthemmung gehalten, der in der Nähe des Achsbolzens im abschwenkbaren Griffteil angeordnet ist. Bei hohen Seitenkräften - für die das bekannte Messer nicht gedacht ist - senkrecht zur Ebene der Messerklinge, wie sie insbesondere bei harten Schnittmaterialien von Teppichböden auftreten können, ist eine Lösung des Griffteils aus seiner Verriegelungstellung nicht auszuschließen. Bei der weiteren Ausführungsform gemäß den Figuren 4 und 5 dieser Druckschrift ist das Griffteil um einen senkrecht zur Ebene der Messerklinge verlaufenden Achsbolzen in etwa der Ebene der Messerklinge verschwenkbar. Diese Ausführungsform weist eine relativ kleine Klemmfläche an der Messerklinge auf, was einer schnittgenauen Führung der Messerklinge bei hohen Druck- und Zugkräften, wie bei einem Teppichmesser üblich, entgegensteht. Außerdem ist zum Öffnen und Abschwenken des Griffteils in Richtung zur Spitze der Messerklinge entweder die andere Hand der Bedienungsperson oder ein mehrfaches Nachgreifen mit dem Daumen oder einem Finger der Arbeitshand erforderlich.From DE-GM 93 10 886 a knife of another type is known, in which the knife blade (scalpel-like deburring blade) is arranged between a recess in the handle body and a handle part which can be swiveled by 90 ° about an axle bolt and which is parallel to the plane of the knife blade extending plane is arranged. With this knife, the knife blade is held by an eccentric with self-locking, which is arranged near the axle bolt in the swiveling handle part. With high lateral forces - for that Known knife is not intended - perpendicular to the plane of the knife blade, as can occur in particular with hard cut materials from carpets, a solution of the handle part from its locking position cannot be excluded. In the further embodiment according to FIGS. 4 and 5 of this document, the grip part can be pivoted about an axis bolt running perpendicular to the plane of the knife blade in approximately the plane of the knife blade. This embodiment has a relatively small clamping surface on the knife blade, which prevents the knife blade from being cut with high pressure and tensile forces, as is customary with a carpet knife. In addition, either the other hand of the operator or a multiple grasping with the thumb or a finger of the working hand is required to open and pivot the handle part in the direction of the tip of the knife blade.

Und schließlich ist aus dem DE-GM 69 20 468 ein Messer anderer Gattung bekannt geworden, welches keine Klappe aufweist, sondern bei welchem der Griffkörper aus zwei Halbschalen gebildet wird, die über ein Filmscharnier an ihrer einen Längskante zusammengehalten sowie an ihrer anderen Längskante mittels Rastnoppen und Rastnuten zusammengeklipst werden können und nach diesem Schließvorgang eine Messerklinge in ihrer Klingenaufnahme haltern. Bei hohen, senkrecht zur Ebene der Messerklinge wirkenden Querkräften, wie sie beim Teppichboden-Schneiden vorkommen können, neigt das Filmscharnier zum Einreißen und die Rastnoppen selbstverständlich zum Lösen aus ihren Rastnuten.And finally, from DE-GM 69 20 468 a knife of another type has become known, which does not have a flap, but in which the handle body is formed from two half-shells which are held together by a film hinge on one longitudinal edge and on the other longitudinal edge by means of locking knobs and locking grooves can be clipped together and hold a knife blade in their blade holder after this closing process. In the event of high transverse forces acting perpendicular to the level of the knife blade, such as can occur when cutting carpets, the film hinge tends to tear and the locking knobs naturally loosen from their locking grooves.

Von diesem Stand der Technik ausgehend, liegt der Erfindung die Aufgabe zugrunde, ein Messer für besonders schwere professionelle Schneidarbeiten, insbesondere ein Teppichboden-Schneidmesser zu schaffen, welches in ergonomisch günstiger Weise einen raschen Klingenwechsel gewährleistet und dabei Schnittverletzungen sicher vermeidet.Starting from this prior art, the invention has for its object to provide a knife for particularly heavy professional cutting work, in particular a carpet cutting knife, which ensures a quick blade change in an ergonomically favorable manner and thereby safely avoids cutting injuries.

Diese Aufgabe wird in Verbindung mit dem eingangs genannten Gattungsbegriff erfindungsgemäß dadurch gelöst, daß die Schwenkachse der Schneide der Messerklinge benachbart und ihre Symmetrielängsachse etwa in Schneidenrichtung verlaufend angeordnet sind, wobei die Klappe in ihrer Schließlage von einem dem Rücken der Messerklinge benachbarten Schwenkriegel arretierbar ist. Durch diese Anordnung kann bei einem Klingenwechsel die Messerklinge durch zwei Daumenbewegungen, nämlich einmal durch Hochschwenken des Schwenkriegels und ein weiteres Mal durch Umlegen der Klappe um die der Schneide benachbarte sowie um ihre etwa in Schneidenrichtung verlaufende Symmetrieachse abgeklappt und dadurch die auszuwechselnde Messerklinge vollständig freigelegt werden. Die Messerklinge kann sodann mit der anderen Hand von der Bedienungsperson rasch entfernt und durch eine neue ersetzt werden, bevor der Daumen der Arbeitshand die Klappe in ihre abdeckende Lage um die Schwenkachse verschwenkt und sodann durch Vorschub des Daumens oder eines Fingers den Schwenkriegel in seine die Klappe arretierende Schließlage verschiebt. Dabei erfordert das Öffnen und Schließen des Messers je nach Übung der Bedienungsperson nur noch eine Zeitspanne von ein bis zwei Sekunden. Zu dieser Zeitspanne ist noch der Zeitraum zum Ersatz der alten durch eine neue Messerklinge hinzuzufügen. Da die Messerklinge bei geöffneter Klappe vollständig freiliegt, kann der Messerklingenwechsel ebenso rasch sowie ohne Schnittverletzungen erfolgen.This object is achieved in connection with the generic term mentioned at the outset in that the pivot axis of the cutting edge is adjacent to the knife blade and its longitudinal axis of symmetry is arranged approximately in the cutting direction, the flap being lockable in its closed position by a pivot bolt adjacent to the back of the knife blade. With this arrangement, when changing the blade, the knife blade can be folded down by two thumb movements, namely once by swiveling the swivel bar up and another time by flipping the flap around the edge of the knife and its axis of symmetry, which roughly runs in the direction of the cutting edge, thereby completely exposing the knife blade to be replaced. The knife blade can then be quickly removed with the other hand by the operator and replaced with a new one before the thumb of the working hand pivots the flap into its covering position about the pivot axis and then by pushing the thumb or a finger the pivot bar into its flap locking position shifts. Depending on the operator's practice, opening and closing the knife only takes a period of time from one to two seconds. At this time, the period for replacing the old with a new knife blade must be added. Since the knife blade is completely exposed when the flap is open, the knife blade can be changed just as quickly and without cuts.

Nach einer vorteilhaften Weiterbildung der Erfindung sind die Klappe und der Schwenkriegel in ihrer Schließlage unter Wirkung von eigenelastischen, blattfederartigen Kräften ihrer selbst arretierbar. Durch diesen kraft- und formschlüssigen Selbstverriegelungseffekt wird die Klinge selbst bei starken auch senkrecht zu ihrer Klingenebene aufgebrachten Querkräften sicher in dieser Arretierungslage gehalten.According to an advantageous development of the invention, the flap and the pivot bolt can be locked in their closed position under the action of inherently elastic, leaf spring-like forces. Due to this positive and form-locking self-locking effect, the blade is held securely in this locking position even with strong transverse forces applied perpendicular to its blade plane.

Nach einer zweiten Ausführungsform ist es jedoch zur Erzielung eines kraft- und formschlüssigen Verriegelungseffektes auch möglich, daß die Klappe und der Schwenkriegel in ihrer Schließlage unter der Wirkung einer die Klappe in Öffnungsrichtung beaufschlagenden Feder in Form einer Biegefeder, einer zylindrischen oder kegelförmigen Schraubenfeder oder einer Blattfeder arretierbar sind.According to a second embodiment, however, it is also possible to achieve a non-positive and positive locking effect that the flap and the pivot bolt in their closed position under the action of a spring acting on the flap in the opening direction in the form of a spiral spring, a cylindrical or conical coil spring or a leaf spring can be locked.

Der Schwenkriegel ist um eine an einem seiner Enden angebrachten, zur Ebene der Messerklinge quer verlaufenden Drehachse schwenkbar, die vorteilhaft an seinem von der Messerklinge abgewandten Ende angeordnet ist.The swivel bolt can be pivoted about an axis of rotation which is attached to one of its ends and runs transversely to the plane of the knife blade and is advantageously arranged at its end facing away from the knife blade.

Nach einer besonders vorteilhaften Weiterbildung der Erfindung weist der Schwenkriegel an seiner dem Griffkörper zugewandten Seite einen warzenförmigen Vorsprung auf, der in Schließlage der Klappe einer Kante einer in ihr vorgesehenen Ausnehmung als Vorreiber zugeordnet ist. Dadurch werden die Klappe und der Schwenkriegel nicht nur unter ihren eigenelastischen, blattfederartigen oder durch eine zusätzliche beaufschlagende Feder, sondern zusätzlich noch durch die in einer dazu senkrechten Ebene wirkenden Klemmkraft des Vorreibers in Form eines warzenförmigen Vorsprunges in Verbindung mit einer Kante der Klappe unterstützt.According to a particularly advantageous development of the invention, the swivel bolt has on its side facing the handle body a wart-shaped projection which, in the closed position of the flap, is assigned to an edge of a recess provided in it as a sash. As a result, the flap and the pivot bolt are supported not only by their inherently elastic, leaf spring-like spring or by an additional spring, but also by the clamping force of the sash acting in a plane perpendicular thereto in the form of a wart-like projection in connection with an edge of the flap.

Nach einer vorteilhaften Weiterbildung der Erfindung besteht die Schwenkachse der Klappe aus vorspringenden, stoffschlüssig mit ihr verbundenen Ösen sowie aus vorspringenden Ösen des Griffkörpers, die gegenseitig in die zwischen den Ösen befindlichen Ausnehmungen greifen und entweder durch eine sie gemeinsam durchdringende Steckachse oder durch form- und kraftschlüssiges Zusammenklipsen von patrizenartigen Vorsprüngen in matrizenartige Ausnehmungen zueinander schwenkbar verbunden sind.According to an advantageous development of the invention, the pivot axis of the flap consists of projecting, integrally connected to it with eyelets and projecting eyelets of the handle body, which mutually engage in the recesses between the eyelets and either through a jointly penetrating thru axle or by positive and non-positive Clip together male-like projections in female-like recesses are pivotally connected to each other.

Nach einer besonders vorteilhaften Weiterbildung der Erfindung deckt die Klappe nicht nur die Klingenaufnahme, sondern auch einen von dieser abgewandten, im Griffkörper angeordneten Magazinraum ab. Dieser Magazinraum weist vorteilhaft an einer Längsseite der in ihm angeordneten Reserve-Messerklingen einen erhöhten, diese in einer entnahmegünstigen Schräglage haltenden Auflagerand auf. Dadurch können die Messerklingen ergonomisch günstig aus dem Magazinraum entnommen und in die Klingenaufnahme eingesetzt werden.According to a particularly advantageous development of the invention, the flap covers not only the blade holder, but also a magazine space which is remote from it and is arranged in the handle body. This magazine space advantageously has a raised support edge on a longitudinal side of the reserve knife blades arranged in it, which edge keeps it in a favorable inclined position. This allows the knife blades to be ergonomic conveniently removed from the magazine room and inserted into the blade holder.

Zur Aufbringung hoher Schneiddrücke und Druckkräfte auf die Messerklinge ist der Griffkörper in der Seitenansicht an seiner dem Messerrücken zugekehrten Oberseite mit einer kreisförmigen Bogenform und an seiner Unterseite hinter der Schwenkachse der Klappe mit zwei wellenförmigen Einbuchtungen sowie mit einer dazwischen befindlichen wellenförmigen Erhöhung versehen, die kontinuierlich, z.B. sinusförmig, ineinander übergehen. Die Breite einer Einbuchtung entspricht etwa der Dicke des mittleren Zeigefingers und der Breite der hinteren Einbuchtung mindestens der Dicke eines kleinen Fingers einer männlichen Person. Die Dicke des Griffkörpers zwischen dem von der Messerklinge abgewandten Ende und der Auflage des Daumens der Bedienungshand wird etwa gleich breit ausgebildet, wohingegen sich die Dicke des Griffkörpers sodann von der Daumenauflage in Richtung zur Messerklingenspitze verjüngt. Diese Form ist grundsätzlich bei einem Messer anderer Art aus der DE 33 09 342 C1 bekannt.In order to apply high cutting pressures and compressive forces to the knife blade, the side view of the handle body is provided with a circular arc shape on its top side facing the back of the knife and on its underside behind the pivot axis of the flap with two undulating indentations and with an undulating elevation located between them, which continuously, e.g. sinusoidal, merge. The width of an indentation corresponds approximately to the thickness of the middle index finger and the width of the rear indentation corresponds at least to the thickness of a little finger of a male person. The thickness of the handle body between the end facing away from the knife blade and the support of the thumb of the operating hand is approximately the same width, whereas the thickness of the handle body then tapers from the thumb support in the direction of the knife blade tip. This shape is known in principle from a different type of knife from DE 33 09 342 C1.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Dabei zeigen

  • Fig. 1 die Seitenansicht eines Messers mit Klappe und Schwenkriegel in Schließstellung,
  • Fig. 2 die Abbildung des Messers von Fig. 1 in der Bedienungshand eines Rechtshänders beim Verriegelungsabschluß und
  • Fig. 3 die Abbildung des Messers von Fig. 2 bei hochgeschwenktem Schwenkriegel und um die Schwenkachse abgeschwenkter Klappe zur vollständigen Freigabe der Messerklinge.
A preferred embodiment of the invention is shown in the drawing. Show
  • 1 is a side view of a knife with flap and swivel bolt in the closed position,
  • Fig. 2 shows the image of the knife of Fig. 1 in the operating hand of a right-hander when locking and
  • Fig. 3 shows the image of the knife of Fig. 2 with the swivel bar pivoted up and the flap swiveled about the swivel axis to completely release the knife blade.

Gemäß den Figuren 1 bis 3 weist das Messer 10 einen Griffkörper 11 und eine Messerklinge 12 auf, die in einer Klingenaufnahme 13 auswechselbar gehaltert ist. Die Klingenaufnahme 13 wird von einer um eine Schwenkachse 14 abschwenkbaren Klappe 15 verschließbar übergriffen.According to FIGS. 1 to 3, the knife 10 has a handle body 11 and a knife blade 12, which is held interchangeably in a blade holder 13. The blade holder 13 is overlapped by a flap 15 that can be swiveled about a pivot axis 14 so that it can be closed.

Erfindungsgemäß sind die Schwenkachse 14 der Schneide 12a der Messerklinge 12 benachbart und ihre Symmetrielängsachse 16 etwa in Schneidenrichtung gemäß dem Pfeil x verlaufend angeordnet, wobei die Klappe 15 in ihrer in den Figuren 1 und 2 dargestellten Schließlage von einem dem Rücken 12b der Messerklinge 12 benachbarten Schwenkriegel 17 arretiert ist.According to the invention, the pivot axis 14 is adjacent to the cutting edge 12a of the knife blade 12 and its longitudinal axis 16 of symmetry is arranged approximately in the cutting direction according to the arrow x, the flap 15 in its closed position shown in FIGS. 1 and 2 from a pivot bolt adjacent to the back 12b of the knife blade 12 17 is locked.

Der Schwenkriegel 17 ist um eine an seinem Ende 17a angeordnete zur Ebene der Messerklinge 12 quer verlaufenden, im dargestellten Beispiel senkrecht zur Zeichenebene verlaufenden Drehachse 18 schwenkbar. Die Drehachse 18 könnte, wenngleich auch ergonomisch nicht so günstig, am anderen Ende 17b (hier: freies Ende 17b) des Schwenkriegels 17 angeordnet werden.The pivot bolt 17 can be pivoted about an axis of rotation 18 arranged at its end 17a and extending transversely to the plane of the knife blade 12, in the example shown perpendicular to the plane of the drawing. The axis of rotation 18 could, although not ergonomically so favorable, be arranged at the other end 17b (here: free end 17b) of the pivot bolt 17.

In den in den Figuren 1 und 2 dargestellten Schließlagen von Klappe 15 und Schwenkriegel 17 sind diese Teile unter Wirkung von eigenelastischen, blattfederartigen Kräften in Selbsthalterung arretierbar. Diese blattfederartigen Kräfte können beispielsweise dadurch bewirkt werden, daß die scharnierartige Schwenkachse 14 keine vollständige Anlage der Innenseite der Klappe 15 an die zugekehrte Seite 12c der Messerklinge 12 gestattet, so daß hierzu eigenelastische, blattfederartige Kräfte von beispielsweise dem Daumen der Arbeitshand überwunden werden müssen, bevor der Schwenkriegel 17 gemäß dem Pfeil 19 von Fig. 3 in seine Schließlage gemäß den Figuren 1 und 2 verschwenkt werden kann. In diesem Fall drücken die eigenelastischen sowie blattfederartigen Kräfte der Klappe 15 gegen die dem Griffkörper 11 zugekehrte Seite des Schwenkriegels 17. Eine weitere Verstärkung dieser eigenelastischen Kräfte kann noch dadurch erzielt werden, daß auch der Schwenkriegel 17 entsprechend mit blattfederartigen, elastischen Kräften beim Einschwenken in Richtung des Pfeiles 19 von Fig. 3 in seine Schließlage noch zusätzlich gegen die ihm zugekehrte Seitenfläche der Klappe 15 drückt. In diesem Fall wirken die Klappe 15 und der Schwenkriegel 17 als Blattfedern in entgegengesetzte Druckrichtungen quer zur Ebene der Messerklinge 12.In the closed positions of flap 15 and pivot bolt 17 shown in FIGS. 1 and 2, these parts are under the action of inherently elastic, leaf spring-like Lockable forces in self-holding. These leaf spring-like forces can be caused, for example, by the fact that the hinge-like pivot axis 14 does not permit complete contact of the inside of the flap 15 with the facing side 12c of the knife blade 12, so that inherently elastic, leaf spring-like forces, for example of the thumb of the working hand, have to be overcome before this the swivel bolt 17 can be swiveled into its closed position according to FIGS. 1 and 2 according to the arrow 19 in FIG. 3. In this case, the inherently elastic and leaf spring-like forces of the flap 15 press against the side of the pivot bolt 17 facing the handle body 11. A further reinforcement of these inherently elastic forces can also be achieved in that the pivot bolt 17 accordingly with leaf spring-like, elastic forces when pivoting in the direction of the arrow 19 of FIG. 3 in its closed position also presses against the side surface of the flap 15 facing it. In this case, the flap 15 and the pivot bolt 17 act as leaf springs in opposite pressure directions transverse to the plane of the knife blade 12.

Nach einer weiteren Ausführungsform läßt es die Erfindung jedoch auch zu, daß die Klappe 15 und der Schwenkriegel 17 in ihrer Schließlage unter Wirkung einer die Klappe 15 in Öffnungsrichtung gemäß Fig. 3 beaufschlagenden Feder in Form einer nicht dargestellten Biegefeder, einer zylindrischen oder kegelförmigen Schraubenfeder oder einer Blattfeder arretierbar sind.According to a further embodiment, the invention also allows the flap 15 and the pivot bolt 17 in their closed position under the action of a spring acting on the flap 15 in the opening direction according to FIG. 3 in the form of a spiral spring, not shown, a cylindrical or conical coil spring or a leaf spring can be locked.

Zu einer zusätzlichen kraft- und formschlüssigen Verriegelung ist der Schwenkriegel 17 an seiner dem Griffkörper 11 zugewandten Unterfläche mit einem warzenförmigen Vorsprung 20 versehen, dem in der Schließlage gemäß den Figuren 1 und 2 eine Kante 15a der Klappe 15 einer in der Klappe 15 angeordneten Ausnehmung 21 (s. Fig. 1) als Vorreiber zugeordnet ist. Dadurch drückt in der Schließlage der Figuren 1 und 2 der warzenförmige Vorsprung 20 mit seiner Gleitkante 20a gegen die Kante 15a der Klappe 15, wodurch eine Vorreiberkraft vom Schwenkriegel 17 etwa in Richtung des Pfeiles y auf die Kante 15a der Klappe 15 ausgeübt wird.For an additional non-positive and positive locking, the swivel bolt 17 is provided on its lower surface facing the handle body 11 with a wart-like projection 20 which, in the closed position according to FIGS. 1 and 2, has an edge 15a of the flap 15 of a recess 21 arranged in the flap 15 (see Fig. 1) is assigned as a sash. As a result, in the closed position of FIGS. 1 and 2, the wart-shaped projection 20 with its sliding edge 20a presses against the edge 15a of the flap 15, as a result of which a cantilever force is exerted on the edge 15a of the flap 15 approximately in the direction of the arrow y.

Die Ausnehmung 21 stellt hierbei eine rücksprungartige Dickenverminderung eines zur Oberseite 11a des Griffkörpers 11 weisenden Vorsprungs V der Klappe 15 dar.The recess 21 here represents a recess-like reduction in the thickness of a projection V of the flap 15 pointing toward the top 11a of the handle body 11.

Durch die vorbeschriebenen eigenelastischen, blattfederartigen Kräfte etwa senkrecht zur Zeichenebene der Figuren 1 und 2 in Verbindung mit der vorbeschriebenen Vorreiberkraft in der Zeichenebene in Richtung des Pfeiles y erfolgt eine zuverlässige Verriegelung der Klappe 15 sowie gleichzeitig eine großflächige Einspannung der Messerklinge 12, die selbst bei großen Druck- und Zugkräften zum Schneiden von Teppichböden und den dabei auftretenden Querkräften senkrecht zur Zeichenebene allen Anforderungen genügt.The above-described inherently elastic, leaf spring-like forces approximately perpendicular to the plane of the drawing in FIGS. 1 and 2 in conjunction with the above-described cam force in the plane of the drawing in the direction of the arrow y result in a reliable locking of the flap 15 and at the same time a large-area clamping of the knife blade 12, even with large ones Pushing and pulling forces for cutting carpets and the transverse forces occurring perpendicular to the drawing plane meet all requirements.

Gemäß den Figuren 1 und 2 besteht die Schwenkachse 14 der Klappe 15 aus vorspringenden, stoffschlüssig mit ihr verbundenen Ösen 22 sowie aus vorspringenden und gleichfalls stoffschlüssig mit dem Griffkörper verbundenen Ösen 23, die gegenseitig in die zwischen den Ösen 22, 23 befindlichen Ausnehmungen 24 greifen und entweder durch eine sie gemeinsam durchdringende Steckachse 25 oder durch form- und kraftschlüssiges Zusammenklipsen zueinander verschwenkbar sind. Für ein form- und kraftschlüssiges Zusammenklipsen ist jeweils der eine Teil der Ösen mit matrizenartigen, z.B. kalottenartigen Ausnehmungen und der andere Teil mit patrizenartigen Vorsprüngen versehen.According to FIGS. 1 and 2, the pivot axis 14 of the flap 15 consists of projecting, cohesively connected to it 22 and from projecting and likewise cohesively connected to the handle body 23, which engage each other in the recesses 24 between the eyelets 22, 23 and either by a jointly penetrating thru axle 25 or by positive and non-positive clipping together are pivotable. For a positive and non-positive clipping, one part of the eyelets is provided with matrix-like, for example dome-like recesses and the other part with male-like projections.

Wie aus Fig. 3 entnommen werden kann, deckt die Klappe 15 nicht nur die Klingenaufnahme 13, sondern auch einen von letzterer abgewandten, im Griffkörper 11 angeordneten Magazinraum 26 ab. Im Magazinraum 26 werden nicht dargestellte Reserveklingen aufbewahrt.As can be seen from FIG. 3, the flap 15 covers not only the blade receptacle 13 but also a magazine space 26 which is remote from the latter and is arranged in the handle body 11. Reserve blades, not shown, are stored in the magazine room 26.

Um die Entnahme dieser Reserveklingen in ergonomisch günstiger Weise vornehmen zu können, ist an einer Längsseite, hier 26a, des Magazinraumes 26 ein gegenüber der Innenfläche 26b erhöhter Auflagerand 26c angeordnet. Durch ihr Aufliegen mit einer Kante auf diesem Auflagerand 26c werden die Reserveklingen in einer Schräglage gehalten, welche eine rasche sowie Schnittverletzungen vermeidende Entnahme gestattet.In order to be able to remove these reserve blades in an ergonomically favorable manner, a support edge 26c, which is raised in relation to the inner surface 26b, is arranged on one long side, here 26a, of the magazine space 26. Because they rest with an edge on this support edge 26c, the reserve blades are held in an inclined position, which allows them to be removed quickly and avoid cuts.

Wie die Figuren 1 und 2 zeigen, ist der Griffkörper 11 in der Seitenansicht an seiner dem Messerrücken 12b zugekehrten Oberseite 11a in Anpassung an die Innenhand 36 mit einer kreisförmigen Bogenform und an seiner Unterseite 11b hinter der Schwenkachse 14 der Klappe 15 mit zwei wellenförmigen Einbuchtungen 27, 28 und einer dazwischen befindlichen wellenförmigen Erhöhung 29 versehen, die kontinuierlich, etwa sinusförmig ineinander übergehen.As shown in FIGS. 1 and 2, the handle body 11 is in a side view on its top 11a facing the back of the knife 12b in adaptation to the palm 36 with a circular arc shape and on its underside 11b behind the pivot axis 14 of FIG Flap 15 is provided with two undulating indentations 27, 28 and an undulating elevation 29 located between them, which merge into one another continuously, approximately sinusoidally.

Die Breite der vorderen Einbuchtung 27 entspricht etwa der Dicke des Zeigefingers 34 und die hintere Einbuchtung 28 mindestens der Dicke eines kleinen Fingers 35 der Arbeitshand 33 einer männlichen Person. Die Dicke des Griffkörpers 11 zwischen dem von der Messerklinge 12 abgewandten Ende 30 und dem dem freien Ende 17b des Schwenkriegels 17 benachbarten Bereich 31 ist etwa gleich breit ausbildet, wohingegen sich die Breite des Griffkörpers 11 von dem Bereich 31 zur Messerspitze 12d hin verjüngt.The width of the front indentation 27 corresponds approximately to the thickness of the index finger 34 and the rear indentation 28 corresponds at least to the thickness of a little finger 35 of the working hand 33 of a male person. The thickness of the handle body 11 between the end 30 facing away from the knife blade 12 and the area 31 adjacent to the free end 17b of the swivel lock 17 is approximately the same width, whereas the width of the handle body 11 tapers from the area 31 to the knife tip 12d.

Das Öffnen der Klappe 15 erfolgt blitzartig dadurch, daß der Daumen 32 der Bedienungshand 33 den Schwenkriegel 17 entgegen der Richtung des Pfeiles 19 nach oben verschwenkt und unmittelbar nach Verschwenkung mit der Daumenseitenfläche die schmale Oberkante 15b der Klappe 15 reibschlüssig ergreift und mit einer senkrecht zur Zeichenebene verlaufenden Schwenkbewegung des Daumens 32 in die aus Fig. 3 ersichtliche Lage nach unten klappt. Die dadurch völlig freiliegende Messerklinge 12 kann sodann von der anderen Hand der Bedienungsperson rasch erfaßt und aus der Klingenaufnahme 13 herausgehoben sowie durch eine neue ersetzt werden. Nach Einlegen der neuen Messerklinge 12 schwenkt der Daumen 32 die Klappe 15 mit einer Seitwärtsbewegung des Daumens 32 in Richtung auf die entsprechende Anlagefläche am Griffkörper 11 und schiebt im nächsten Augenblick den Schwenkriegel 17 mit der Kuppe des Daumens 32 in die Verriegelungslage gemäß den Figuren 1 und 2.The flap 15 is opened in a flash in that the thumb 32 of the operating hand 33 pivots the swivel bolt 17 upward in the direction of the arrow 19 and immediately after pivoting with the thumb side surface grips the narrow upper edge 15b of the flap 15 in a frictional manner and with one perpendicular to the plane of the drawing extending pivoting movement of the thumb 32 in the position shown in FIG. 3 folds down. The knife blade 12 which is thereby completely exposed can then quickly be grasped by the other hand of the operator and lifted out of the blade holder 13 and replaced by a new one. After inserting the new knife blade 12, the thumb 32 pivots the flap 15 with a sideways movement of the thumb 32 in the direction of the corresponding contact surface on the handle body 11 and pushes it in the next moment the swivel bolt 17 with the tip of the thumb 32 into the locking position according to FIGS. 1 and 2.

Seine Arbeitsposition nimmt der Daumen 32 dadurch ein, daß er von seiner Stellung gemäß Fig. 2 (bei Abschluß der Verriegelung des Sperriegels 17) in nicht gezeigter Weise nach unten schwenkt, dabei Schwenkriegel 17 und Klappe 15 übergreift und schließlich benachbart der Griffunterseite am Zeigefinger 34 zur Anlage gelangt.The thumb 32 assumes its working position by pivoting downward from its position according to FIG. 2 (when the locking bolt 17 has been locked) in a manner not shown, overlapping the pivot bolt 17 and flap 15 and finally adjacent to the underside of the handle on the index finger 34 comes to the plant.

Da das Freilegen der Messerklinge 12 gemäß Fig. 3 sowie der Verriegelungsvorgang jeweils nur ein bis zwei Sekunden in Anspruch nimmt und andererseits die Messerklinge 12 bei heruntergeklappter Klappe 15 gemäß Fig. 3 vollständig freiliegt, kann der Klingenwechsel nicht nur äußerst rasch, sondern auch in ergonomisch günstiger sowie Schnittverletzungen vermeidender Weise vorgenommen werden.Since the exposure of the knife blade 12 according to FIG. 3 and the locking process each take only one to two seconds and, on the other hand, the knife blade 12 is completely exposed when the flap 15 is folded down according to FIG. 3, the blade change can be not only extremely quick, but also ergonomically cheaper and avoid cuts.

Claims (12)

Messer, insbesondere Teppichboden-Schneidmesser, mit einem Griffkörper und einer eine Messerklinge auswechselbar darin halternden Klingenaufnahme, die von einer um eine Schwenkachse abschwenkbaren Klappe verschließbar übergriffen ist, dadurch gekennzeichnet, daß die Schwenkachse (14) der Schneide (12a) der Messerklinge (12) benachbart und ihre Symmetrielängsachse (16) etwa in Schneidenrichtung (Pfeil x) verlaufend angeordnet sind, wobei die Klappe (15) in ihrer Schließlage von einem dem Rücken (12b) der Messerklinge (12) benachbarten Schwenkriegel (17) arretierbar ist.Knife, in particular carpeting cutting knife, with a handle body and a blade holder interchangeably holding a knife blade, which is overlapped by a flap that can be pivoted about a pivot axis, characterized in that the pivot axis (14) of the cutting edge (12a) of the knife blade (12) Adjacent and their longitudinal axis of symmetry (16) are arranged approximately in the cutting direction (arrow x), the flap (15) in its closed position being lockable by a swivel bolt (17) adjacent to the back (12b) of the knife blade (12). Messer nach Anspruch 1, dadurch gekennzeichnet, daß die Klappe (15) und der Schwenkriegel (17) in ihrer Schließlage unter Wirkung von eigenelastischen, blattfederartigen Kräften ihrer selbst arretierbar sind.Knife according to claim 1, characterized in that the flap (15) and the pivot bolt (17) can be locked in their closed position under the action of inherently elastic, leaf spring-like forces. Messer nach Anspruch 1, dadurch gekennzeichnet, daß die Klappe (15) und der Schwenkriegel (17) in ihrer Schließlage unter der Wirkung einer die Klappe (15) in Öffnungsrichtung beaufschlagenden Feder in Form einer Biegefeder, einer zylindrischen oder kegelförmigen Schraubenfeder oder einer Blattfeder arretierbar sind.Knife according to claim 1, characterized in that the flap (15) and the pivot bolt (17) can be locked in their closed position under the action of a spring acting on the flap (15) in the opening direction in the form of a spiral spring, a cylindrical or conical helical spring or a leaf spring are. Messer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Schwenkriegel (17) um eine an einem seiner Enden (17a, 17b) angeordneten, zur Ebene der Messerklinge (12) quer verlaufenden Drehachse (18) schwenkbar ist.Knife according to one of claims 1 to 3, characterized in that the swivel bolt (17) can be swiveled about an axis of rotation (18) arranged at one of its ends (17a, 17b) and extending transversely to the plane of the knife blade (12). Messer nach Anspruch 4, dadurch gekennzeichnet, daß die Drehachse (18) des Schwenkriegels (17) an seinem von der Messerklinge (12) abgewandten Ende (17a) angeordnet ist.Knife according to claim 4, characterized in that the axis of rotation (18) of the swivel bar (17) is arranged at its end (17a) facing away from the knife blade (12). Messer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Schwenkriegel (17) an seiner dem Griffkörper (11) zugewandten Seite einen warzenförmigen Vorsprung (20) aufweist, der in Schließlage der Klappe (15) einer Kante (20a) einer in ihr vorgesehenen Ausnehmung (20) als Vorreiber zugeordnet ist.Knife according to one of claims 1 to 5, characterized in that the swivel bolt (17) has on its side facing the handle body (11) a wart-shaped projection (20) which, in the closed position of the flap (15), has an edge (20a) in its intended recess (20) is assigned as a sash. Messer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Schwenkachse (14) der Klappe (15) aus vorspringenden, stoffschlüssig mit ihr verbundenen Ösen (22) sowie aus vorspringenden Ösen (23) des Griffkörpers (11) besteht, die gegenseitig in die zwischen den Ösen (22, 23) befindlichen Ausnehmungen (24) greifen und entweder durch eine sie gemeinsam durchdringende Steckachse (25) oder durch form- und kraftschlüssiges Zusammenklipsen von patrizenartigen Vorsprüngen in matrizenartige Ausnehmungen zueinander schwenkbar verbunden sind.Knife according to one of claims 1 to 6, characterized in that the pivot axis (14) of the flap (15) consists of projecting eyelets (22) integrally connected to it as well as projecting eyelets (23) of the handle body (11), which are mutually engage in the recesses (24) located between the eyelets (22, 23) and are pivotally connected to one another either by a plug-in axis (25) penetrating them together or by positive and non-positive clipping of male-like projections into female-like recesses. Messer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Klappe (15) außer der Klingenaufnahme (13) noch einen von dieser (13) abgewandten, im Griffkörper (11) angeordneten Magazinraum (26) abdeckt.Knife according to one of claims 1 to 7, characterized in that the flap (15), in addition to the blade receptacle (13), also covers a magazine space (26) which faces away from this (13) and is arranged in the handle body (11). Messer nach Anspruch 8, dadurch gekennzeichnet, daß der Magazinraum (26) an einer Längsseite (26a) der in ihm angeordneten Reserve-Messerklingen einen erhöhten, diese in einer entnahmegünstigen Schräglage haltenden Auflagerand (26c) aufweist.Knife according to claim 8, characterized in that the magazine space (26) has on one longitudinal side (26a) of the reserve knife blades arranged in it an elevated bearing edge (26c) which holds it in a favorable inclined position. Messer nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Griffkörper (11) in der Seitenansicht an seiner dem Messerrücken (12b) zugekehrten Oberseite (11a) mit einer kreisförmigen Bogenform und an seiner Unterseite (11b) hinter der Schwenkachse (14) der Klappe (15) mit zwei wellenförmigen Einbuchtungen (27, 28) sowie mit einer dazwischen befindlichen wellenförmigen Erhöhung (29) versehen ist, die kontinuierlich ineinander übergehen.Knife according to one of claims 1 to 9, characterized in that the handle body (11) in a side view on its upper side (11a) facing the back of the knife (12b) with a circular arc shape and on its underside (11b) behind the pivot axis (14) the flap (15) is provided with two undulating indentations (27, 28) and with an undulating elevation (29) located between them, which merge continuously into one another. Messer nach Anspruch 10, dadurch gekennzeichnet, daß die Breite der vorderen Einbuchtung (27) etwa der Dicke des Zeigefingers (34) und die hintere Einbuchtung (28) mindestens der Dicke eines kleinen Fingers (35) einer Arbeitshand 33 insbesondere einer männlichen Person entspricht.Knife according to claim 10, characterized in that the width of the front indentation (27) corresponds approximately to the thickness of the index finger (34) and the rear indentation (28) corresponds at least to the thickness of a little finger (35) of a working hand 33, in particular a male person. Messer nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Dicke des Griffkörpers (11) zwischen seinem dem von der Messerklinge (12) abgewandten Ende (30) und dem dem freien Ende (17b) des Schwenkriegels (17) benachbarten Bereich (31) etwa gleich breit ausgebildet ist und sich sodann von dem Bereich (31) in Richtung zur Messerspitze (12d) verjüngt.Knife according to one of claims 1 to 11, characterized in that the thickness of the handle body (11) between its end (30) facing away from the knife blade (12) and the area (17b) adjacent to the free end (17b) of the swivel bar (17) 31) is of approximately the same width and then tapers from the area (31) towards the knife tip (12d).
EP95104890A 1994-06-17 1995-04-01 Knife with interchangeable blade especially for cutting carpet Expired - Lifetime EP0687530B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4421351A DE4421351C1 (en) 1994-06-17 1994-06-17 Cutter, especially cutter for cutting fitted carpets, with a replaceable blade
DE4421351 1994-06-17

Publications (2)

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EP0687530A1 true EP0687530A1 (en) 1995-12-20
EP0687530B1 EP0687530B1 (en) 1997-01-15

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EP95104890A Expired - Lifetime EP0687530B1 (en) 1994-06-17 1995-04-01 Knife with interchangeable blade especially for cutting carpet

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EP (1) EP0687530B1 (en)
DE (2) DE4421351C1 (en)
ES (1) ES2098982T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19600447C1 (en) * 1996-01-09 1996-08-22 Schlipkoeter Michael Dr Knife with interchangeable blade
DE19749254A1 (en) * 1997-11-07 1999-05-12 Wolfcraft Gmbh Knives, especially carpet knives
DE19959874C1 (en) * 1999-12-10 2001-08-16 Beermann Kg Martor Argentax knife

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520059A (en) * 1967-10-05 1970-07-14 Allway Tools Knife handle for adjustable blade
GB1446958A (en) * 1974-06-08 1976-08-18 Plas Plugs Ltd Holders for use in hand tools
US4612707A (en) * 1984-03-29 1986-09-23 Shea Thomas M Cutting and scraping device
DE3622343C2 (en) * 1986-07-03 1989-01-19 Martor-Argentax E. H. Beermann Kg, 5650 Solingen, De

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6920468U (en) * 1969-05-21 1969-11-27 Guenter Schreiber UNIVERSAL KNIVES
DE6948045U (en) * 1969-12-08 1970-03-19 Hans Karl Middeldorf TOOL EQUIPPED WITH AN INTERCHANGEABLE BLADE BLADE
DE3309342C1 (en) * 1982-03-16 1984-03-01 Martor-Argentax E.H. Beermann Kg, 5650 Solingen Tool handle for a knife blade that can be moved lengthways
DE9310886U1 (en) * 1993-07-21 1993-09-02 Martor-Argentax E. H. Beermann KG, 42653 Solingen knife

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520059A (en) * 1967-10-05 1970-07-14 Allway Tools Knife handle for adjustable blade
GB1446958A (en) * 1974-06-08 1976-08-18 Plas Plugs Ltd Holders for use in hand tools
US4612707A (en) * 1984-03-29 1986-09-23 Shea Thomas M Cutting and scraping device
DE3622343C2 (en) * 1986-07-03 1989-01-19 Martor-Argentax E. H. Beermann Kg, 5650 Solingen, De

Also Published As

Publication number Publication date
DE59500090D1 (en) 1997-02-27
EP0687530B1 (en) 1997-01-15
ES2098982T3 (en) 1997-05-01
DE4421351C1 (en) 1995-02-02

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