EP0411470B1 - Tool handle - Google Patents

Tool handle Download PDF

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Publication number
EP0411470B1
EP0411470B1 EP90114310A EP90114310A EP0411470B1 EP 0411470 B1 EP0411470 B1 EP 0411470B1 EP 90114310 A EP90114310 A EP 90114310A EP 90114310 A EP90114310 A EP 90114310A EP 0411470 B1 EP0411470 B1 EP 0411470B1
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EP
European Patent Office
Prior art keywords
handle
tool
approximately
tool handle
booklet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP90114310A
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German (de)
French (fr)
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EP0411470A1 (en
Inventor
Karl Weidner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adolf Wuerth GmbH and Co KG
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Adolf Wuerth GmbH and Co KG
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Publication of EP0411470A1 publication Critical patent/EP0411470A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners

Definitions

  • the invention relates to a tool book for chisels, carpenter chisels or the like.
  • Two types of tool handles are known for chisels.
  • the oldest type is a wooden booklet with a circular cross-section.
  • flat flats are then applied, which run parallel to one another and to the cutting edge.
  • a circumferential flat bead is formed in the region of the end facing the blade.
  • the second known type of chisel booklet consists of plastic and has an approximately oval cross-section, the thickness and width of the booklet not changing over almost its entire length. Only shortly before the blade-side end is a finger recess arranged, which runs all around and can serve to hold the thumb.
  • Chisels are used in three types of activity.
  • the chisel is normally held with the left hand so that the thumb is in the area of the head end of the booklet.
  • the right hand is used to hit the head of the chisel with a hammer.
  • the left hand is used to hold the chisel, to align and guide it in all three directions.
  • the longitudinal axis of the chisel is transverse to the forearm axis, and the cutting edge of the chisel is parallel to the forearm axis.
  • the handle In the second type of handling, namely cutting, the handle is held upside down so that the thumb lies in the area of the blade-side end of the handle.
  • the longitudinal axis of the chisel is oriented approximately as an extension of the forearm axis.
  • the wood chisel must be held at an angle.
  • the chisel is rotated 90 ° around its longitudinal axis. In this position, the user can better control the position of the cutting edge.
  • the third type of handling is to pry off a loosened chip, whether by chipping or by hitting. This can be done with both the right and the left hand in both hand positions mentioned. Here it goes less about orienting the chisel than about applying greater leverage.
  • the position of the hand to the handle differs in all three types of handling.
  • the invention has for its object to improve a chisel booklet in terms of cheaper handling and less fatigue of the hand of the user.
  • the invention proposes a tool book according to the main claim.
  • the fingers of the leading hand lie in the recesses of the fingers on one narrow side surface. Due to the oval cross-section, the hand can precisely steer and guide the chisel. Levering is also possible in this hand position.
  • the broad side surface rests on the inside of the thumb and the ball of the thumb, and the fingertips can lie in the finger depressions, but in different finger depressions than in the striking position.
  • the invention therefore creates a form of the booklet which, in spite of different possibilities for holding the booklet, means an ergonomic improvement in all three types of hand position.
  • the thickness and width of the booklet decrease more in the direction of the blade-side end of the booklet than in the direction of the opposite head end of the booklet.
  • the little finger has a shorter length and therefore the handle on the striking posture Point has a smaller cross section than on the opposite index finger.
  • the handling of the booklet is also improved in the chip holding, in which the little finger lies in the area of the larger cross-section of the booklet. This is due to the fact that the booklet is held at an angle in this position.
  • the location of the greatest thickness and width of the booklet is in the top half of the booklet, preferably at about a third to a quarter of the booklet length.
  • the collar forms a rounded contact surface for the thumb.
  • the thumb rests on this contact surface in the chip holder, and usually on the broad side surface.
  • the collar forms a rounded contact surface on the opposite side for the index finger, which in the chip holding is here, for example, transverse to the longitudinal axis of the booklet.
  • the finger depressions are essentially arranged only in the narrow side faces, while the broad side faces do without such finger depressions and are in particular of smooth design. This results in a wide and smooth contact surface for the chip holding.
  • the booklet has a stepped head.
  • the head therefore has a reduced cross section, which is surrounded by a step in the booklet on all sides.
  • the little finger can rest in the chip position.
  • the booklet consists of plastic, in particular is injection-molded in one piece from plastic.
  • the invention proposes to give the booklet a total length of 12 cm, whereby the length can also be reduced to approximately 11.5 cm for smaller handles.
  • the greatest width of the booklet is in a range between 32 and 38 mm, while the greatest thickness is in a range of 28 - 34 mm. These dimensions are larger than known in the prior art.
  • the handle for a chisel shown in the figures has an elongated shape with a cross section which is approximately oval, see FIG. 3.
  • the cross section is shown schematically in FIG Has length as width.
  • the length of the cross section corresponds to the width of the booklet, while the width of the cross section corresponds to the thickness of the booklet.
  • the handle is therefore delimited by two narrow side surfaces 11 lying opposite one another and two broad side surfaces 12 running approximately at right angles to these.
  • the handle is attached to a chisel blade.
  • the booklet has a stepped head 15.
  • the head 15 has a somewhat smaller cross section than the immediately adjacent area of the booklet, so that a step 16 is formed here, which extends all around the booklet.
  • the narrow side surfaces seen from the side in FIG. 1 are provided with finger depressions 17, each of which is about 2 to 3 mm deep and are intended for contacting the finger limbs.
  • the last finger grip recess 17 facing the wood chisel blade lies immediately adjacent to a collar 18 which delimits the handle towards the blade.
  • the thickness of the booklet continuously increases from this point 20 to a point 21 of greatest cross-section at which both the width and the thickness of the tool booklet have their maximum size. This point 21 with the largest cross-section divides the length of the booklet approximately in the range of one third to two thirds and is arranged in the top half of the tool booklet.
  • the tool handle is mirror-symmetrical with respect to its two longitudinal center planes.
  • the broad side surfaces 12 are smooth, ie without finger depressions.
  • the finger depressions 17 are only present in the narrow side surfaces 11.
  • the left hand engages the handle in a right-handed person so that the thumb side of the hand is at the top in the illustration in FIG. 1 and the finger limbs come to rest in the depressions 17 of a narrow side surface.
  • the axis of the forearm runs perpendicular to the longitudinal axis of the tool, and the longitudinal axis of the cross section, which lies in the paper plane in FIG. 1, extends in the extension of the forearm. This longitudinal axis of the cross section naturally also runs parallel to the cutting edge of the chisel.
  • the hand engages the tool in such a way that the little finger lies in the area of the head 15 of the booklet, while the thumb and palm rest on a broad side surface 12 and the thumb rests on the rounded transition 19 of the collar 18 lies. This is attempted to be shown in FIG. 4.
  • the tool is used upside down.
  • the shaft 22 thus protrudes from the thumb side of the hand.
  • the tool is also rotated by 90 ° about its longitudinal axis, so that the finger members, see left in FIG. 4, no longer act on the narrow side surface 11 of the booklet that has the finger recesses 17, but instead lies on the smooth broad side surface 12 the opposite broad side surface 12 on the ball of the thumb.
  • the thumb also lies on the broad side surface 12 in the extension of the ball of the thumb.
  • the tool booklet is set at an angle so that it is oriented approximately in the extension of the forearm. The fingertips rest on the narrow side surface 11 and can either engage in the finger grip recesses 17 or rest on the elevations formed between them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Scissors And Nippers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Stored Programmes (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

A tool handle for a firmer chisel has an approximately oval elongated cross-section. It is bounded by two smooth broad side faces and two narrow side faces each provided with four finger gripping recesses. At its blade end, it is closed by a collar forming a bearing face for the thumb and if necessary index finger. <IMAGE>

Description

Die Erfindung betrifft ein Werkzeugheft für Stechbeitel, Zimmermannsbeitel o. dgl.The invention relates to a tool book for chisels, carpenter chisels or the like.

Bei Stechbeiteln sind zwei Arten von Werkzeugheften bekannt. Die älteste Art ist ein aus Holz bestehendes Heft, das einen kreisrunden Querschnitt aufweist. Im Bereich zweier gegenüberliegender Längsseiten sind dann ebene Abflachungen angebracht, die parallel zueinander und zu der Schneidkante verlaufen. Im Bereich des der Klinge zugewandten Endes ist ein umlaufender flacher Wulst ausgebildet.Two types of tool handles are known for chisels. The oldest type is a wooden booklet with a circular cross-section. In the area of two opposite long sides, flat flats are then applied, which run parallel to one another and to the cutting edge. A circumferential flat bead is formed in the region of the end facing the blade.

Die zweite bekannte Art von Stechbeitelheften besteht aus Kunststoff und weist einen etwa ovalen Querschnitt auf, wobei sich Dicke und Breite des Hefts fast über dessen gesamte Länge nicht ändern. Erst kurz vor dem klingenseitigen Ende ist eine Fingermulde angeordnet, die ringsum läuft und zur Aufnahme des Daumens dienen kann.The second known type of chisel booklet consists of plastic and has an approximately oval cross-section, the thickness and width of the booklet not changing over almost its entire length. Only shortly before the blade-side end is a finger recess arranged, which runs all around and can serve to hold the thumb.

In jüngerer Zeit wurde ein aus Kunststoff bestehendes Heft vorgeschlagen, das ebenfalls einen ovalen Querschnitt aufweist und dessen Abmessungen sich in Richtung auf die Klinge verringern. Der Übergang zur Klinge erfolgt glatt, so daß hier keine Anlagefläche gebildet ist. Beim Stoßen mit diesem Stechbeitel soll der ausgestreckte Zeigerfinger an einer Verbreiterung der Klinge anliegen. Das Heft ist mit einer Querverrippung versehen.Recently, a booklet made of plastic has been proposed, which also has an oval cross section and whose dimensions decrease in the direction of the blade. The transition to the blade is smooth, so that no contact surface is formed here. When thrusting with this chisel, the extended index finger should be at a widening of the The blade. The booklet has cross ribbing.

Bei vielen Werkzeugarten ist bislang versucht worden, die Form des Griffes unter ergonomischen Gesichtspunkten der Hand des Benutzers anzupassen. Dies ist bei den bisherigen Bemühungen deswegen möglich, weil bei vielen Werkzeugarten die Hand in nur einer Stellung am Werkzeug angreift. Bei Stechbeiteln ist dies jedoch nicht der Fall.With many types of tools, attempts have so far been made to adapt the shape of the handle to the user's hand from an ergonomic point of view. With previous efforts, this is possible because the hand engages the tool in only one position with many types of tools. However, this is not the case with wood chisels.

Stechbeitel werden in dreierlei Arten von Tätigkeiten verwendet. Bei der ersten wird der Stechbeitel im Normalfall mit der linken Hand so gehalten, daß der Daumen im Bereich des kopfseitigen Endes des Heftes liegt. Mit der rechten Hand wird mit dem Hammer auf den Kopf des Stechbeitels geschlagen. Die linke Hand dient dazu, den Stechbeitel zu halten, in allen drei Richtungen auszurichten und zu führen. Dabei liegt die Längsachse des Stechbeitels quer zur Unterarmachse, und die Schneidkante des Beitels parallel zur Unterarmachse.Chisels are used in three types of activity. In the first case, the chisel is normally held with the left hand so that the thumb is in the area of the head end of the booklet. The right hand is used to hit the head of the chisel with a hammer. The left hand is used to hold the chisel, to align and guide it in all three directions. The longitudinal axis of the chisel is transverse to the forearm axis, and the cutting edge of the chisel is parallel to the forearm axis.

Bei der zweiten Art der Handhabung, nämlich dem Spanen, wird das Heft gerade umgekehrt gehalten, so daß der Daumen im Bereich des klingenseitigen Endes des Griffs liegt. Da bei dieser Haltung aber der Benutzer den Stechbeitel in seiner Längsrichtung schiebt, wird die Längsachse des Stechbeitels etwa in Verlängerung der Unterarmachse orientiert. Zu diesem Zweck muß der Stechbeitel schräg angefaßt werden. Gleichzeitig erfolgt noch eine Drehung des Stechbeitels um 90° um seine Längsachse. In dieser Haltung kann der Benutzer die Lage der Schneidkante besser steuern.In the second type of handling, namely cutting, the handle is held upside down so that the thumb lies in the area of the blade-side end of the handle. However, since in this position the user pushes the chisel in its longitudinal direction, the longitudinal axis of the chisel is oriented approximately as an extension of the forearm axis. For this purpose, the wood chisel must be held at an angle. At the same time, the chisel is rotated 90 ° around its longitudinal axis. In this position, the user can better control the position of the cutting edge.

Die dritte Handhabungsart besteht darin, einen gelösten Span, sei dies durch Abspanen oder durch Schlagen geschehen, abzuhebeln. Dies kann sowohl mit der rechten als auch mit der linken Hand in beiden genannten Handstellungen geschehen. Hierbei geht es weniger um eine Orientierung des Stechbeitels als um das Aufbringen größerer Hebelkräfte.The third type of handling is to pry off a loosened chip, whether by chipping or by hitting. This can be done with both the right and the left hand in both hand positions mentioned. Here it goes less about orienting the chisel than about applying greater leverage.

In allen drei Handhabungsarten ist die Lage der Hand zum Griff unterschiedlich.The position of the hand to the handle differs in all three types of handling.

Es ist ein Kunststoffwerkzeugheft für Feilen, Raspeln o.dgl. bekannt (DE-A-2 514 119), bei dem die Breitseitenflächen 6 bzw. 8 begrenzte Ausnehmungen aufweisen. Zusätzlich enthält das Heft in seinem Endbereich eine große durchgehende Öffnung. Für die Anwendung bei einem Stechbeitel ist dieses Kunststoffwerkzeugheft nicht geeignet.It is a plastic tool book for files, rasps or the like. known (DE-A-2 514 119), in which the broad side surfaces 6 and 8 have limited recesses. In addition, the booklet has a large continuous opening in its end area. This plastic tool booklet is not suitable for use with a chisel.

Aufgrund der unterschiedlichen Haltungsarten können Formen bei anderen Werkzeugen keine Anregung für ein Stechbeitelheft geben.Due to the different types of posture, shapes for other tools cannot provide a suggestion for a chisel booklet.

Der Erfindung liegt die Aufgabe zugrunde, ein Stechbeitelheft im Hinblick auf eine günstigere Handhabung und geringere Ermüdung der Hand des Benutzers zu verbessern.The invention has for its object to improve a chisel booklet in terms of cheaper handling and less fatigue of the hand of the user.

Zur Lösung dieser Aufgabe schlägt die Erfindung ein Werkzeugheft nach dem Hauptanspruch vor.To achieve this object, the invention proposes a tool book according to the main claim.

Bei der Schlaghaltung liegen die Fingerglieder der führenden Hand in den Fingermulden der einen Schmalseitenfläche. Aufgrund des ovalen Querschnitts kann die Hand den Stechbeitel genau lenken und führen. Auch ein Hebeln ist in dieser Handstellung möglich.In the striking position, the fingers of the leading hand lie in the recesses of the fingers on one narrow side surface. Due to the oval cross-section, the hand can precisely steer and guide the chisel. Levering is also possible in this hand position.

Greift die Hand dagegen zum Spanen um, so liegt die Breitseitenfläche an der Innenseite des Daumens und dem Handballen an, und die Fingerspitzen können in den Fingermulden liegen, jedoch in anderen Fingermulden als bei der Schlaghaltung.If, on the other hand, the hand grips for cutting, the broad side surface rests on the inside of the thumb and the ball of the thumb, and the fingertips can lie in the finger depressions, but in different finger depressions than in the striking position.

Die Erfindung schafft also eine Form des Heftes, die trotz unterschiedlicher Möglichkeiten, das Heft zu halten, in allen drei Arten der Handstellung eine ergonomische Verbesserung bedeutet.The invention therefore creates a form of the booklet which, in spite of different possibilities for holding the booklet, means an ergonomic improvement in all three types of hand position.

In Weiterbildung der Erfindung kann vorgesehen sein, daß die Dicke und Breite des Heftes sich in Richtung auf das klingenseitige Ende des Hefts stärker verringern als in Richtung auf das gegenüberliegende Kopfende des Hefts. Auf diese Weise wird der Tatsache Rechnung getragen, daß der kleine Finger eine geringere Länge aufweist und daher in der Schlaghaltung das Heft an dieser Stelle einen kleineren Querschnitt aufweist als am gegenüberliegenden Zeigefinger. Überraschenderweise wird dennoch die Handhabung des Heftes auch in der Spanhaltung verbessert, in der der kleine Finger im Bereich des größeren Querschnitts des Heftes liegt. Dies ergibt sich aufgrund der Tatsache, daß das Heft in dieser Haltung schräg gehalten wird.In a further development of the invention, it can be provided that the thickness and width of the booklet decrease more in the direction of the blade-side end of the booklet than in the direction of the opposite head end of the booklet. In this way, the fact is taken into account that the little finger has a shorter length and therefore the handle on the striking posture Point has a smaller cross section than on the opposite index finger. Surprisingly, the handling of the booklet is also improved in the chip holding, in which the little finger lies in the area of the larger cross-section of the booklet. This is due to the fact that the booklet is held at an angle in this position.

In Weiterbildung kann vorgesehen sein, daß die Stelle der größten Dicke und Breite des Hefts in der kopfseitigen Hälfte des Hefts liegt, vorzugsweise bei etwa einem Drittel bis einem Viertel der Heftlänge.In a further development it can be provided that the location of the greatest thickness and width of the booklet is in the top half of the booklet, preferably at about a third to a quarter of the booklet length.

In Weiterbildung der Erfindung kann vorgesehen sein, daß der Kragen eine abgerundete Anlagefläche für den Daumen bildet. An dieser Anlagefläche liegt der Daumen in der Spanhaltung an, und zwar im Normalfall auf der Breitseitenfläche.In a further development of the invention it can be provided that the collar forms a rounded contact surface for the thumb. The thumb rests on this contact surface in the chip holder, and usually on the broad side surface.

Es kann in Weiterbildung auch vorgesehen sein, daß der Kragen eine abgerundete Anlagefläche auf der gegenüberliegenden Seite für den Zeigefinger bildet, der in der Spanhaltung hier beispielsweise quer zur Längsachse des Hefts liegt.In a further development it can also be provided that the collar forms a rounded contact surface on the opposite side for the index finger, which in the chip holding is here, for example, transverse to the longitudinal axis of the booklet.

Die Fingermulden sind nach der Erfindung im wesentlichen nur in den Schmalseitenflächen angeordnet, während die Breitseitenflächen ohne derartige Fingermulden auskommen und insbesondere glatt ausgebildet sind. Es ergibt sich somit für die Spanhaltung hier eine breite und glatte Anlagefläche.According to the invention, the finger depressions are essentially arranged only in the narrow side faces, while the broad side faces do without such finger depressions and are in particular of smooth design. This results in a wide and smooth contact surface for the chip holding.

In Weiterbildung der Erfindung kann vorgesehen sein, daß das Heft einen abgesetzten Kopf aufweist. Der Kopf weist also einen verringerten Querschnitt auf, der allseits von einer Stufe umgeben in das Heft übergeht. Hier kann in der Spanhaltung der kleine Finger anliegen.In a further development of the invention it can be provided that the booklet has a stepped head. The head therefore has a reduced cross section, which is surrounded by a step in the booklet on all sides. Here the little finger can rest in the chip position.

Erfindungsgemäß kann vorgesehen sein, daß das Heft aus Kunststoff besteht, insbesondere einstückig aus Kunststoff gespritzt ist.According to the invention it can be provided that the booklet consists of plastic, in particular is injection-molded in one piece from plastic.

Die Erfindung schlägt vor, dem Heft eine Gesamtlänge von 12 cm zu geben, wobei für kleinere Griffe die Länge auch etwa auf 11,5 cm verringert werden kann. Die größte Breite des Hefts liegt in einem Bereich zwischen 32 und 38 mm, während die größte Dicke in einem Bereich von 28 - 34 mm liegt. Diese Maße sind größer als im Stand der Technik bekannt.The invention proposes to give the booklet a total length of 12 cm, whereby the length can also be reduced to approximately 11.5 cm for smaller handles. The greatest width of the booklet is in a range between 32 and 38 mm, while the greatest thickness is in a range of 28 - 34 mm. These dimensions are larger than known in the prior art.

Weitere Merkmale, Einzelheiten und Vorzüge der Erfindung ergeben sich aus der folgenden Beschreibung einer bevorzugten Ausführungsform der Erfindung sowie anhand der Zeichnung. Hierbei zeigen:

Fig. 1
eine Breitseitenansicht eines Stechbeitelhefts nach der Erfindung;
Fig. 2
eine Schmalseitenansicht des Stechbeitelhefts nach Fig. 1;
Fig. 3
eine Stirnansicht des Stechbeitelhefts von oben in Fig. 1;
Fig. 4
die Lage des Hefts in einer Hand während der Spanhaltung.
Further features, details and advantages of the invention will become apparent from the following description of a preferred embodiment of the invention and from the drawing. Here show:
Fig. 1
a broad side view of a chisel booklet according to the invention;
Fig. 2
a narrow side view of the chisel handle according to Fig. 1;
Fig. 3
an end view of the chisel handle from above in Fig. 1;
Fig. 4
the position of the booklet in one hand during chip holding.

Das in den Figuren dargestellte Heft für einen Stechbeitel weist langgestreckte Form auf mit einem Querschnitt, der etwa oval ist, siehe Fig. 3. In Fig. 3 ist der Querschnitt schematisch zu sehen, wobei es im wesentlichen darauf ankommt, daß der Querschnitt eine größere Länge als Breite aufweist. Die Länge des Querschnitts entspricht der Breite des Hefts, während die Breite des Querschnitts der Dicke des Hefts entspricht.The handle for a chisel shown in the figures has an elongated shape with a cross section which is approximately oval, see FIG. 3. The cross section is shown schematically in FIG Has length as width. The length of the cross section corresponds to the width of the booklet, while the width of the cross section corresponds to the thickness of the booklet.

Der Griff ist also von zwei aneinander gegenüberliegenden Schmalseitenflächen 11 und zwei etwa rechtwinklig zu diesen verlaufenden Breitseitenflächen 12 begrenzt.The handle is therefore delimited by two narrow side surfaces 11 lying opposite one another and two broad side surfaces 12 running approximately at right angles to these.

An seinem einen Ende 13, in Fig. 1 und 2 unten, wird der Griff an einer Stechbeitelklinge befestigt. Am gegenüberliegenden Ende 14 weist das Heft einen abgesetzten Kopf 15 auf. Der Kopf 15 weist einen etwas kleineren Querschnitt als der unmittelbar angrenzende Bereich des Heftes auf, so daß hier eine Stufe 16 gebildet ist, die sich allseits um das Heft herumzieht.At one end 13, in Fig. 1 and 2 below, the handle is attached to a chisel blade. At the opposite end 14, the booklet has a stepped head 15. The head 15 has a somewhat smaller cross section than the immediately adjacent area of the booklet, so that a step 16 is formed here, which extends all around the booklet.

Die in Fig. 1 von der Seite zu sehenden Schmalseitenflächen sind mit Fingermulden 17 versehen, die jeweils etwa 2 - 3 mm tief sind und zur Anlage der Fingerglieder bestimmt sind. Die letzte, der Stechbeitelklinge zugewandte Fingergriffmulde 17 liegt unmittelbar benachbart zu einem das Heft zur Klinge hin abgrenzenden Kragen 18. Dieser Kragen 18 geht über einen geschwungenen Übergang 19 in die Stelle 20 mit dem kleinsten Querschnitt des Hefts über. Die Dicke des Hefts erweitert sich von dieser Stelle 20 kontinuierlich bis zu einer Stelle 21 größten Querschnitts, an dem sowohl die Breite als auch die Dicke des Werkzeugheftes ihre maximale Größe aufweisen. Diese Stelle 21 größten Querschnitts teilt die Länge des Hefts etwa im Bereich von einem Drittel zu zwei Drittel und ist in der kopfseitigen Hälfte des Werkzeugheftes angeordnet.The narrow side surfaces seen from the side in FIG. 1 are provided with finger depressions 17, each of which is about 2 to 3 mm deep and are intended for contacting the finger limbs. The last finger grip recess 17 facing the wood chisel blade lies immediately adjacent to a collar 18 which delimits the handle towards the blade. The thickness of the booklet continuously increases from this point 20 to a point 21 of greatest cross-section at which both the width and the thickness of the tool booklet have their maximum size. This point 21 with the largest cross-section divides the length of the booklet approximately in the range of one third to two thirds and is arranged in the top half of the tool booklet.

Das Werkzeugheft ist bezüglich seiner beiden Längsmittelebenen spiegelsymmetrisch ausgebildet.The tool handle is mirror-symmetrical with respect to its two longitudinal center planes.

Wie Fig. 2 zeigt, sind die Breitseitenflächen 12 glatt ausgebildet, d. h. ohne Fingermulden. Die Fingermulden 17 sind nur in den Schmalseitenflächen 11 vorhanden.As shown in FIG. 2, the broad side surfaces 12 are smooth, ie without finger depressions. The finger depressions 17 are only present in the narrow side surfaces 11.

In der Schlagstellung des Stechbeitelhefts greift bei einem Rechtshänder die linke Hand so an dem Heft an, daß bei der Darstellung in Fig. 1 die Daumenseite der Hand oben liegt und die Fingerglieder in die Mulden 17 einer Schmalseitenfläche zu liegen kommen. Die Achse des Unterarms verläuft dabei senkrecht zur Längsachse des Werkzeugs, und die Längsachse des Querschnitts, die in Fig. 1 in der Papierebene liegt, verläuft in Verlängerung des Unterarms. Diese Längsachse des Querschnitts verläuft natürlich auch parallel zur Scheidkante des Stechbeitels.In the striking position of the chisel handle, the left hand engages the handle in a right-handed person so that the thumb side of the hand is at the top in the illustration in FIG. 1 and the finger limbs come to rest in the depressions 17 of a narrow side surface. The axis of the forearm runs perpendicular to the longitudinal axis of the tool, and the longitudinal axis of the cross section, which lies in the paper plane in FIG. 1, extends in the extension of the forearm. This longitudinal axis of the cross section naturally also runs parallel to the cutting edge of the chisel.

Bei der Spanstellung des Werkzeugs greift die Hand so am Werkzeug an, daß der kleine Finger im Bereich des Kopfs 15 des Hefts liegt, während der Daumen und der Handballen auf einer Breitseitenfläche 12 aufliegen und der Daumen zur Anlage an dem abgerundeten Übergang 19 des Kragens 18 liegt. Dies ist in Fig. 4 dazustellen versucht.When the tool is in the chip position, the hand engages the tool in such a way that the little finger lies in the area of the head 15 of the booklet, while the thumb and palm rest on a broad side surface 12 and the thumb rests on the rounded transition 19 of the collar 18 lies. This is attempted to be shown in FIG. 4.

Hier ist zu sehen, daß das Werkzeug in umgedrehter Haltung verwendet wird. Der Schaft 22 ragt also der Daumenseite des Hand heraus. Zusätzlich ist aber das Werkzeug auch noch um seine Längsachse um 90° verdreht, so daß die Fingerglieder, siehe links in Fig. 4, nicht mehr an der die Fingermulden 17 aufweisenden Schmalseitenfläche 11 des Hefts angreifen, sondern an der glatten Breitseitenfläche 12. Dementsprechend liegt die gegenüberliegende Breitseitenfläche 12 an dem Handballen an. Der Daumen liegt in Verlängerung des Handballens ebenfalls an der Breitseitenfläche 12 an. Zusätzlich ist das Werkzeugheft noch schräg gestellt, so daß es etwa in Verlängerung des Unterarms orientiert ist. Die Fingerkuppen liegen auf der Schmalseitenfläche 11 an und können dort entweder in die Fingergriffmulden 17 eingreifen oder auf den zwischen diesen gebildeten Erhebungen aufliegen.Here you can see that the tool is used upside down. The shaft 22 thus protrudes from the thumb side of the hand. In addition, however, the tool is also rotated by 90 ° about its longitudinal axis, so that the finger members, see left in FIG. 4, no longer act on the narrow side surface 11 of the booklet that has the finger recesses 17, but instead lies on the smooth broad side surface 12 the opposite broad side surface 12 on the ball of the thumb. The thumb also lies on the broad side surface 12 in the extension of the ball of the thumb. In addition, the tool booklet is set at an angle so that it is oriented approximately in the extension of the forearm. The fingertips rest on the narrow side surface 11 and can either engage in the finger grip recesses 17 or rest on the elevations formed between them.

Claims (12)

  1. Tool handle for a ripping chisel or carpenter's chisel, with an oval cross-section substantially over the entire length of the handle and in which the longitudinal axis of the oval cross-section runs parallel to the cutting edge of the blade, with slightly bulging wide side faces (12), with slightly bulging narrow side faces (11) provided with finger depressions (17) and in the vicinity of the blade-side end (13) a collar (18), in the vicinity of which at least the handle thickness is increased and which has a rounded transition (19) to the remainder of the handle.
  2. Tool handle according to claim 1, wherein the thickness and width of the handle decrease more significantly towards the blade-side end (13) of the handle than towards the opposite head end of the handle.
  3. Tool handle according to claim 1 or 2, wherein the point (21) of maximum thickness and width of the handle is located in the head-side half of the handle, preferably at approximately 1/3 to 1/4 of the handle length.
  4. Tool handle according to one of the preceding claims, wherein the collar (18) forms a rounded contact surface for the thumb.
  5. Tool handle according to one of the preceding claims, wherein the collar (18) forms a rounded contact surface for the index finger positioned transversely to the longitudinal axis of the tool.
  6. Tool handle according to one of the preceding claims, wherein the wide side faces (12) of the handle are smooth.
  7. Tool handle according to one of the preceding claims, wherein the handle has an offset head (15).
  8. Tool handle according to one of the preceding claims, wherein the handle is made from plastic.
  9. Tool handle according to one of the preceding claims, wherein the length to width ratio of the cross-section is in the range approximately 1.2 to 1.4, preferably at approximately 1.35.
  10. Tool handle according to one of the preceding claims, wherein the length of the tool handle is between approximately 110 and approximately 120 mm.
  11. Tool handle according to one of the preceding claims, wherein the greatest handle width is in a range between approximately 32 and approximately 38 mm.
  12. Tool handle according to one of the preceding claims, wherein the greatest thickness is in a range of approximately 28 to approximately 34 mm.
EP90114310A 1989-08-02 1990-07-26 Tool handle Expired - Lifetime EP0411470B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925534A DE3925534A1 (en) 1989-08-02 1989-08-02 TOOL BOOK
DE3925534 1989-08-02

Publications (2)

Publication Number Publication Date
EP0411470A1 EP0411470A1 (en) 1991-02-06
EP0411470B1 true EP0411470B1 (en) 1994-07-06

Family

ID=6386337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114310A Expired - Lifetime EP0411470B1 (en) 1989-08-02 1990-07-26 Tool handle

Country Status (5)

Country Link
EP (1) EP0411470B1 (en)
AT (1) ATE108119T1 (en)
DE (2) DE3925534A1 (en)
DK (1) DK0411470T3 (en)
ES (1) ES2056313T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19641464A1 (en) * 1996-10-09 1998-04-30 Pries Alexander New forms of grip surfaces, especially ball game rackets / tennis rackets etc.
DE10045649A1 (en) * 2000-09-15 2002-03-28 Wuerth Adolf Gmbh & Co Kg Handle for a ratchet
TW201109126A (en) * 2009-09-09 2011-03-16 shu-hui Ye PET thermal shrinking identification band opening structure for tools

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547258A (en) * 1947-06-02 1951-04-03 Minerva Hennings Craig Can opener
DE812373C (en) * 1948-10-02 1951-08-30 Ernst Doering Jun Woodworking tool with cutting edge ground on one side
DE2514119C3 (en) * 1975-03-29 1978-03-23 Carl Dan. Peddinghaus Kg, 5828 Ennepetal Plastic tool handle
US4091497A (en) * 1976-12-20 1978-05-30 Walter Bade Handle for files and similar tools
DE8110659U1 (en) * 1981-04-08 1981-10-01 ELORA-Werkzeugfabrik GmbH, 5630 Remscheid "TOOL BOOK"
DE8203605U1 (en) * 1982-02-10 1982-06-24 Gebra-Plastik Gebr. Raderschad Gmbh & Co Kg, 5202 Hennef SCREWDRIVER
GB8315540D0 (en) * 1983-06-07 1983-07-13 Kango Wolf Power Tools Portable tools
US4548248A (en) * 1984-02-27 1985-10-22 Riemann Herbert F Handle for striking tool

Also Published As

Publication number Publication date
ES2056313T3 (en) 1994-10-01
DK0411470T3 (en) 1994-11-07
ATE108119T1 (en) 1994-07-15
DE59006345D1 (en) 1994-08-11
EP0411470A1 (en) 1991-02-06
DE3925534A1 (en) 1991-02-07

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