EP0497307A2 - Chisel - Google Patents

Chisel Download PDF

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Publication number
EP0497307A2
EP0497307A2 EP92101457A EP92101457A EP0497307A2 EP 0497307 A2 EP0497307 A2 EP 0497307A2 EP 92101457 A EP92101457 A EP 92101457A EP 92101457 A EP92101457 A EP 92101457A EP 0497307 A2 EP0497307 A2 EP 0497307A2
Authority
EP
European Patent Office
Prior art keywords
chisel
machine
tool holder
shank
threaded bolt
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.)
Withdrawn
Application number
EP92101457A
Other languages
German (de)
French (fr)
Other versions
EP0497307A3 (en
Inventor
Rudolf Jenny
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.)
Albert Berner & Co KG GmbH
Original Assignee
Albert Berner & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Albert Berner & Co KG GmbH filed Critical Albert Berner & Co KG GmbH
Publication of EP0497307A2 publication Critical patent/EP0497307A2/en
Publication of EP0497307A3 publication Critical patent/EP0497307A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits

Definitions

  • the invention relates to a chisel for striking handheld power tools, in particular for electric hammers and pneumatic hammers, but also for rotary hammers which, by means of a corresponding adapter, only perform a striking, no rotating function.
  • the chisel essentially consists of a blade with a cutting edge, preferably ground on one side, and a shaft. So far, chisels have only become known as hand tools, but not as accessories for electrical or pneumatic hand machine tools.
  • the invention is therefore based on the object of providing a chisel which can be used universally as an accessory for striking handheld power tools and which can be combined with the tool holders of all common machine types.
  • the shaft of the chisel is provided at its machine end with a device for releasable connection to the tool holder of the machine or a tool holder adapted to the machine.
  • the device for releasable connection is designed as a groove shaft, conical shaft or threaded bolt.
  • the groove shaft preferably has at least one axial, closed on both sides recess for receiving at least one radially displaceable locking body.
  • the threaded bolt preferably has a round thread.
  • the threaded bolt can be an integral part of the chisel shank, but can also be screwed into the shank of the chisel and thus be exchangeable.
  • the chisel according to the invention can be combined with all common systems of striking hand power tools, in particular rotary hammers, and with all customary adapter systems which can be combined with the tool holders of such rotary hammers.
  • the chisel (FIGS. 1 and 2) consists of a blade 1 with a cutting edge 2 ground on one side and a shank 3, on the machine-side end of which there is a device 4 for releasable connection to the tool holder 11 of a tool holder 10.
  • the connecting device 4 is designed as a cone shaft 5, which is inserted into the corresponding cone of the receptacle 11 of the tool holder 10.
  • the receptacle 11 is provided with a continuous bore 6 into which an expulsion wedge can be inserted in order to drive the chisel out of the receptacle 11, if necessary.
  • the tool holder 10 is adapted to a hand tool of a certain type ("SDS system") by its special shaft design, namely by at least one open-ended groove 7 and - in the illustrated embodiment - two axial, mutually closed recesses 8 for receiving radially displaceable Locking bodies.
  • SDS system a hand tool of a certain type
  • the connecting device 4 is designed as a threaded bolt 9 which is adapted to the tool holder 11 of the tool holder or adapter 10.
  • the tool holder 11 is in this case a threaded sleeve 13 in the form of a hexagon nut which can be screwed onto the threaded bolt 9 of the chisel.
  • the end of the tool holder 10 on the machine side can also be used for this Embodiment can be designed as a groove shank, as in the embodiment according to FIGS. 1 and 2.
  • the chisel can also be forged from one piece (FIG. 5), the machine-side end of the shank 3 in turn being formed as a groove shank as well as the machine-side end of the tool holder 10 according to FIGS. 1 and 2.
  • the threaded bolt 9 preferably has a round thread which can be screwed into the corresponding internal thread of the tool holder 11 of a tool holder 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention relates to a chisel, the shank of which is provided with a device for detachable connection to a tool-holding fixture of a striking hand-operated machine tool or of a tool holder adapted to the machine. The chisel is universally usable as an accessory for striking hand-operated machine tools and can be combined with the holding fixtures of all common machine types. <IMAGE>

Description

Die Erfindung betrifft einen Stechbeitel für schlagende Handwerkzeugmaschinen, insbesondere für Elektrohämmer und pneumatische Hämmer, aber auch für Bohrhämmer, die durch einen entsprechenden Adapter nur eine schlagende, keine drehende Funktion ausüben. Der Stechbeitel besteht im wesentlichen aus einer Klinge mit vorzugsweise einseitig zugeschliffener Schneide und einem Schaft. Stechbeitel sind bisher nur als Handwerkzeuge bekannt geworden, jedoch nicht als Zubehör für elektrische oder pneumatische Handwerkzeugmaschinen.The invention relates to a chisel for striking handheld power tools, in particular for electric hammers and pneumatic hammers, but also for rotary hammers which, by means of a corresponding adapter, only perform a striking, no rotating function. The chisel essentially consists of a blade with a cutting edge, preferably ground on one side, and a shaft. So far, chisels have only become known as hand tools, but not as accessories for electrical or pneumatic hand machine tools.

Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Stechbeitel zu schaffen, der sich als Zubehör für schlagende Handwerkzeugmaschinen universell einsetzen läßt und der sich mit den Werkzeugaufnahmen aller gängigen Maschinentypen kombinieren läßt.The invention is therefore based on the object of providing a chisel which can be used universally as an accessory for striking handheld power tools and which can be combined with the tool holders of all common machine types.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schaft des Stechbeitels an seinem maschinenseitigen Ende mit einer Einrichtung zum lösbaren Verbinden mit der Werkzeugaufnahme der Maschine oder eines an die Maschine adaptierten Werkzeughalters versehen ist.This object is achieved in that the shaft of the chisel is provided at its machine end with a device for releasable connection to the tool holder of the machine or a tool holder adapted to the machine.

Bei vorteilhaften Ausführungsformen des erfindungsgemäßen Stechbeitels ist die Einrichtung zum lösbaren Verbinden als Nutenschaft, Konusschaft oder Gewindebolzen ausgebildet.In advantageous embodiments of the chisel according to the invention, the device for releasable connection is designed as a groove shaft, conical shaft or threaded bolt.

Wenn die Einrichtung als Nutenschaft ausgebildet ist, weist der Nutenschaft vorzugsweise mindestens eine axiale, beidseitig geschlossene Ausnehmung zur Aufnahme mindestens eines radial verschiebbaren Verriegelungskörpers auf.If the device is designed as a groove shaft, the groove shaft preferably has at least one axial, closed on both sides recess for receiving at least one radially displaceable locking body.

Wenn die Einrichtung als Gewindebolzen ausgebildet ist, trägt der Gewindebolzen vorzugsweise ein Rundgewinde. Der Gewindebolzen kann integraler Bestandteil des Stechbeitelschaftes sein, kann aber auch in den Schaft des Stechbeitels eingeschraubt und damit austauschbar sein.If the device is designed as a threaded bolt, the threaded bolt preferably has a round thread. The threaded bolt can be an integral part of the chisel shank, but can also be screwed into the shank of the chisel and thus be exchangeable.

Der erfindungsgemäße Stechbeitel läßt sich mit allen gängigen Systemen schlagender Handwerkzeugmaschinen, insbesondere Bohrhämmer, und mit allen üblichen Adaptersystemen, die mit den Werkzeugaufnahmen solcher Bohrhämmer kombinierbar sind, kombinieren.The chisel according to the invention can be combined with all common systems of striking hand power tools, in particular rotary hammers, and with all customary adapter systems which can be combined with the tool holders of such rotary hammers.

Die Erfindung wird anhand der Zeichnung näher erläutert:

Fig. 1
zeigt eine Ausführungsform des erfindungsgemäßen Stechbeitels in Seitenansicht (teilweise im Schnitt), und zwar mit einem Konusschaft als Verbindungseinrichtung, in Kombination mit einem Werkzeughalter (Adapter) für einen Bohrhammer;
Fig. 2
ist eine Draufsicht auf die Anordnung gemäß Fig. 1;
Fig. 3
ist die Seitenansicht (teilweise im Schnitt) einer anderen Ausführungsform, bei der die Verbindungseinrichtung ein Gewindebolzen ist, der mit Hilfe einer Gewindehülse mit dem Werkzeughalter verschraubt ist;
Fig. 4
ist eine Draufsicht auf die Anordnung gemäß Fig. 3;
Fig. 5
ist eine Teil-Seitenansicht einer anderen Ausführungsform, bei der der Stechbeitel ohne Adapter direkt in die Werkzeugaufnahme der Maschine gesteckt werden kann; und
Fig. 6
stellt eine Seitenansicht (teilweise im Schnitt) einer weiteren Ausführungsform dar, bei der die Verbindungseinrichtung ein Gewindebolzen mit Rundgewinde ist.
The invention is explained in more detail with reference to the drawing:
Fig. 1
shows an embodiment of the chisel according to the invention in side view (partially in section), with a conical shaft as a connecting device, in combination with a tool holder (adapter) for a hammer drill;
Fig. 2
is a plan view of the arrangement of FIG. 1;
Fig. 3
is the side view (partially in section) of another embodiment in which the connecting device is a threaded bolt which is screwed to the tool holder by means of a threaded sleeve;
Fig. 4
is a plan view of the arrangement of FIG. 3;
Fig. 5
is a partial side view of another embodiment in which the chisel can be inserted directly into the tool holder of the machine without an adapter; and
Fig. 6
shows a side view (partially in section) of a further embodiment, in which the connecting device is a threaded bolt with a round thread.

Der Stechbeitel (Fig. 1 und 2) besteht aus einer Klinge 1 mit einseitig zugeschliffener Schneide 2 und einem Schaft 3, an dessen maschinenseitigem Ende sich eine Einrichtung 4 zum lösbaren Verbinden mit der Werkzeugaufnahme 11 eines Werkzeughalters 10 befindet. Die Verbindungseinrichtung 4 ist bei dieser Ausführungsform als Konusschaft 5 ausgebildet, der in den entsprechenden Konus der Aufnahme 11 des Werkzeughalters 10 eingeschoben ist. Die Aufnahme 11 ist mit einer durchgehenden Bohrung 6 versehen, in die ein Austreibkeil eingesetzt werden kann, um den Stechbeitel aus der Aufnahme 11 gegebenenfalls herauszutreiben. Der Werkzeughalter 10 ist durch seine spezielle Schaftausbildung an eine Handwerkzeugmaschine eines bestimmten Typs ("SDS-System") adaptiert, und zwar durch mindestens eine offen endende Nut 7 und - im gezeichneten Ausführungsbeispiel - zwei axiale, beidseitig geschlossene Ausnehmungen 8 zur Aufnahme von radial verschiebbaren Verriegelungskörpern.The chisel (FIGS. 1 and 2) consists of a blade 1 with a cutting edge 2 ground on one side and a shank 3, on the machine-side end of which there is a device 4 for releasable connection to the tool holder 11 of a tool holder 10. In this embodiment, the connecting device 4 is designed as a cone shaft 5, which is inserted into the corresponding cone of the receptacle 11 of the tool holder 10. The receptacle 11 is provided with a continuous bore 6 into which an expulsion wedge can be inserted in order to drive the chisel out of the receptacle 11, if necessary. The tool holder 10 is adapted to a hand tool of a certain type ("SDS system") by its special shaft design, namely by at least one open-ended groove 7 and - in the illustrated embodiment - two axial, mutually closed recesses 8 for receiving radially displaceable Locking bodies.

Bei der Ausführungsform gemäß Fig. 3 und 4 ist die Verbindungseinrichtung 4 als Gewindebolzen 9 ausgebildet, der an die Werkzeugaufnahme 11 des Werkzeughalters bzw. Adapters 10 angepaßt ist. Die Werkzeugaufnahme 11 ist in diesem Falle eine Gewindehülse 13 in Form einer Sechskantmutter, die auf den Gewindebolzen 9 des Stechbeitels aufschraubbar ist. Das maschinenseitige Ende des Werkzeughalters 10 kann auch bei dieser Ausführungsforn als Nutenschaft ausgebildet sein, wie bei der Ausführungsform gemäß den Fig. 1 und 2.3 and 4, the connecting device 4 is designed as a threaded bolt 9 which is adapted to the tool holder 11 of the tool holder or adapter 10. The tool holder 11 is in this case a threaded sleeve 13 in the form of a hexagon nut which can be screwed onto the threaded bolt 9 of the chisel. The end of the tool holder 10 on the machine side can also be used for this Embodiment can be designed as a groove shank, as in the embodiment according to FIGS. 1 and 2.

Der Stechbeitel kann auch aus einem Stück geschmiedet sein (Fig. 5), wobei das maschinenseitige Ende des Schafts 3 wiederum als Nutenschaft ebenso ausgebildet sein kann, wie das maschinenseitige Ende des Werkzeughalters 10 gemäß den Fig. 1 und 2.The chisel can also be forged from one piece (FIG. 5), the machine-side end of the shank 3 in turn being formed as a groove shank as well as the machine-side end of the tool holder 10 according to FIGS. 1 and 2.

Wenn die Verbindungseinrichtung 4 als Gewindebolzen 9 ausgebildet ist (Fig. 6), trägt der Gewindebolzen 9 vorzugsweise ein Rundgewinde, das in das entsprechende Innengewinde der Werkzeugaufnahme 11 eines Werkzeughalters 10 einschraubbar ist.If the connecting device 4 is designed as a threaded bolt 9 (FIG. 6), the threaded bolt 9 preferably has a round thread which can be screwed into the corresponding internal thread of the tool holder 11 of a tool holder 10.

Claims (6)

Stechbeitel für schlagende Handwerkzeugmaschinen, im wesentlichen bestehend aus einer Klinge mit Schneide und einem Schaft, dadurch gekennzeichnet, daß der Schaft (3) an seinem maschinenseitigen Ende mit einer Einrichtung (4) zum lösbaren Verbinden des Stechbeitels mit der Werkzeugaufnahme (11) der Maschine oder eines an die Maschine adaptierten Werkzeughalters (10) versehen ist.Chisel for striking handheld power tools, consisting essentially of a blade with a cutting edge and a shank, characterized in that the shank (3) at its machine end has a device (4) for releasably connecting the chisel to the tool holder (11) of the machine or a tool holder (10) adapted to the machine is provided. Stechbeitel nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung (4) ein Nutenschaft ist.Wood chisel according to claim 1, characterized in that the device (4) is a groove shank. Stechbeitel nach Anspruch 2, dadurch gekennzeichnet, daß der Nutenschaft mindestens eine axiale, beidseitig geschlossene Ausnehmung zur Aufnahme von radial verschiebbaren Verriegelungskörpern aufweist.Wood chisel according to claim 2, characterized in that the groove shaft has at least one axial, closed on both sides recess for receiving radially displaceable locking bodies. Stechbeitel nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung (4) ein Konusschaft (5) ist.Wood chisel according to claim 1, characterized in that the device (4) is a cone shaft (5). Stechbeitel nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung (4) ein Gewindebolzen (9) ist.Wood chisel according to claim 1, characterized in that the device (4) is a threaded bolt (9). Stechbeitel nach Anspruch 5, dadurch gekennzeichnet, daß der Gewindebolzen (9) ein Rundgewinde trägt.Wood chisel according to claim 5, characterized in that the threaded bolt (9) has a round thread.
EP19920101457 1991-01-29 1992-01-29 Chisel Withdrawn EP0497307A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9100999U 1991-01-29
DE9100999U DE9100999U1 (en) 1991-01-29 1991-01-29 Chisel

Publications (2)

Publication Number Publication Date
EP0497307A2 true EP0497307A2 (en) 1992-08-05
EP0497307A3 EP0497307A3 (en) 1993-04-07

Family

ID=6863792

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920101457 Withdrawn EP0497307A3 (en) 1991-01-29 1992-01-29 Chisel

Country Status (2)

Country Link
EP (1) EP0497307A3 (en)
DE (1) DE9100999U1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007027680A2 (en) * 2005-08-30 2007-03-08 Arthur Harris Power tool attachments
US7363922B2 (en) * 2001-07-17 2008-04-29 Hawera Probst Gmbh Flat chisel
USD752937S1 (en) * 2013-06-18 2016-04-05 Hilti Aktiengesellschaft Chisel
USD921465S1 (en) 2019-05-06 2021-06-08 Milwaukee Electric Tool Corporation Mortar knife
USD922840S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922841S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922842S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD923447S1 (en) 2019-05-06 2021-06-29 Milwaukee Electric Tool Corporation Chisel

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB429943A (en) * 1933-12-09 1935-06-11 Frank Thomas Fogden Improved means for protecting the heads of tools subjected in use to impact
FR1152841A (en) * 1956-06-28 1958-02-26 Improvements to impact tools, such as chisels and the like
US3191909A (en) * 1963-03-29 1965-06-29 Norbert M Reischl Spot weld separator
FR2197703A1 (en) * 1972-09-05 1974-03-29 Jacobs Mfg Co
DE2339395A1 (en) * 1973-08-03 1975-02-13 Richard Lemcke Attachment for percussive drills - riveting etc function by cancelling torque to apply impact only to tool
DE2542893A1 (en) * 1975-09-26 1977-03-31 Leonhard Maurus Cutting and ripping tool - partic. for removing burrs and surface defects from welded plastic articles e.g. profiles
DE2630116A1 (en) * 1976-07-05 1978-01-19 Hilti Ag HOLDER FOR ACCOMMODATION OF SELF-DRILLING PLUGS
EP0024837A1 (en) * 1979-08-13 1981-03-11 Linear Pneumatics Inc. Method of removing stuck gaskets and pneumatic impact tool therefor
EP0131688A2 (en) * 1983-07-18 1985-01-23 HILTI Aktiengesellschaft Chisel for making slots in masonry and the like
EP0395858A1 (en) * 1989-05-05 1990-11-07 fischerwerke Artur Fischer GmbH &amp; Co. KG Fitting device with an anchor bolt and a fitting tool

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB429943A (en) * 1933-12-09 1935-06-11 Frank Thomas Fogden Improved means for protecting the heads of tools subjected in use to impact
FR1152841A (en) * 1956-06-28 1958-02-26 Improvements to impact tools, such as chisels and the like
US3191909A (en) * 1963-03-29 1965-06-29 Norbert M Reischl Spot weld separator
FR2197703A1 (en) * 1972-09-05 1974-03-29 Jacobs Mfg Co
DE2339395A1 (en) * 1973-08-03 1975-02-13 Richard Lemcke Attachment for percussive drills - riveting etc function by cancelling torque to apply impact only to tool
DE2542893A1 (en) * 1975-09-26 1977-03-31 Leonhard Maurus Cutting and ripping tool - partic. for removing burrs and surface defects from welded plastic articles e.g. profiles
DE2630116A1 (en) * 1976-07-05 1978-01-19 Hilti Ag HOLDER FOR ACCOMMODATION OF SELF-DRILLING PLUGS
EP0024837A1 (en) * 1979-08-13 1981-03-11 Linear Pneumatics Inc. Method of removing stuck gaskets and pneumatic impact tool therefor
EP0131688A2 (en) * 1983-07-18 1985-01-23 HILTI Aktiengesellschaft Chisel for making slots in masonry and the like
EP0395858A1 (en) * 1989-05-05 1990-11-07 fischerwerke Artur Fischer GmbH &amp; Co. KG Fitting device with an anchor bolt and a fitting tool

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363922B2 (en) * 2001-07-17 2008-04-29 Hawera Probst Gmbh Flat chisel
WO2007027680A2 (en) * 2005-08-30 2007-03-08 Arthur Harris Power tool attachments
WO2007027680A3 (en) * 2005-08-30 2007-07-05 Arthur Harris Power tool attachments
USD752937S1 (en) * 2013-06-18 2016-04-05 Hilti Aktiengesellschaft Chisel
USD779904S1 (en) 2013-06-18 2017-02-28 Hilti Aktiengesellschaft Chisel
USD922840S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD921465S1 (en) 2019-05-06 2021-06-08 Milwaukee Electric Tool Corporation Mortar knife
USD922841S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922842S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD923447S1 (en) 2019-05-06 2021-06-29 Milwaukee Electric Tool Corporation Chisel
USD937650S1 (en) 2019-05-06 2021-12-07 Milwaukee Electric Tool Corporation Chisel
USD938249S1 (en) 2019-05-06 2021-12-14 Milwaukee Electric Tool Corporation Chisel
USD941113S1 (en) 2019-05-06 2022-01-18 Milwaukee Electric Tool Corporation Chisel

Also Published As

Publication number Publication date
DE9100999U1 (en) 1991-04-18
EP0497307A3 (en) 1993-04-07

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