EP2391484A1 - Tool holder - Google Patents

Tool holder

Info

Publication number
EP2391484A1
EP2391484A1 EP10700874A EP10700874A EP2391484A1 EP 2391484 A1 EP2391484 A1 EP 2391484A1 EP 10700874 A EP10700874 A EP 10700874A EP 10700874 A EP10700874 A EP 10700874A EP 2391484 A1 EP2391484 A1 EP 2391484A1
Authority
EP
European Patent Office
Prior art keywords
tool
shaft
tool holder
section
bracket
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.)
Granted
Application number
EP10700874A
Other languages
German (de)
French (fr)
Other versions
EP2391484B1 (en
Inventor
Olaf Koch
Alexander Buchenau
Stefan Hammerstingl
Matthias Keith
Uto Plank
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP2391484A1 publication Critical patent/EP2391484A1/en
Application granted granted Critical
Publication of EP2391484B1 publication Critical patent/EP2391484B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/082—Retainers consisting of a swinging yoke or latching means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/211—Cross-sections of the tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17051—Swinging external yoke or detent

Definitions

  • the present invention relates to a tool holder for a chisel hammer.
  • Tool holders with a lock are known for chisel hammer among others from EP 1 872 913 A2.
  • the tool holder can accommodate two of the common types of tools and secure by folding a strap. It is further provided that the bracket is locked in a position in which the tool can be inserted into the tool holder or removed from it.
  • the bracket is attached to a rotatable shaft by means of pins.
  • On the pins act during the beating operation of the chisel hammer high forces.
  • the pins are made of highly resistant materials.
  • One object is to provide another tool holder.
  • the inventive tool holder for a chisel hammer has a tool holder for receiving a tool and a tool securing the
  • Bracket with at least one eyelet engages positively in the tail before.
  • the eyelet has a non-circular cross-section.
  • the tool lock is pivotable in at least a first position for insertion and removal of the tool and at least a second position for securing the tool.
  • the preferably matching non-circular cross-section of eyelet and the end pieces ensures that the bracket and shaft can not rotate against each other.
  • the forces occurring when hitting are introduced into the shaft over substantially the entire circumference of the eye. This can result in low loads on the materials.
  • the end piece has a larger cross section than the shaft between the end pieces.
  • the tool holder may have a bearing for supporting the shaft, wherein a cross section of the bearing is equal to a cross section of the end pieces.
  • bracket has a contour line perpendicular to the shaft with four straight sections and a flat stop surface is provided, wherein in each of the first and second positions one of the four rectilinear portions rests against the flat stop surface.
  • Fig. 1 is a tool holder
  • Fig. 2 is a tool holder
  • 4 to 10 are longitudinal sections through the tool holder of FIG. 1 or FIG. 2.
  • Fig. 1 shows an exploded view of an embodiment of a tool holder.
  • the tool holder is adapted to hold tools 1, e.g. a chisel for a chisel hammer.
  • Fig. 2 shows an exploded view of another embodiment of a tool holder.
  • Figures 3 to 6 show in longitudinal sections a position for locking a tool of the first design in one of the tool holders and a position for insertion and removal of the tool from the tool holder.
  • Figures 7 to 10 show in longitudinal sections a position for locking a tool of the second type in one of the tool holders and a position for inserting and removing the tool from the tool holder.
  • the tool holders 1 are adapted to receive tools, in particular Meissein.
  • the known chisel 2 have two different designs in terms of securing in a tool holder 4.
  • the first design of the tool 2 is shown schematically in Figures 1 to 4b.
  • the substantially cylindrical tool 2 has an annular collar 5.
  • the tool holder 1 provides a bracket 6, which surrounds the tool 1 in the direction of impact 7 behind the collar 5 so partially that the bracket 6 forms a stop in the direction of impact 7 for the collar 5.
  • a front portion 8 of the bracket has for this purpose a semicircular contour, which can surround the tool 2 in addition to the collar 5, but has a small diameter than the collar 5.
  • the second design of the tool 12 is shown in the longitudinal sections of Figures 5a to 6b.
  • the tool 12 has a longitudinal groove 13 along a shank of the tool 12, in which a mandrel 15 of the tool holder 1 can engage.
  • the bracket 6 and the mandrel 15 are pivotally mounted about an axis to remove the tool 2, 12 from the tool holder 1 / insert and lock.
  • the mandrel 15 is arranged on a shaft 16.
  • the shaft 16 is inserted into a bearing 17, in which the shaft 16 is freely rotatable.
  • the shaft 16 has a circular cross section within the bearing 17.
  • the shaft 16 has at its ends two end pieces 18 with a non-circular cross-section.
  • the cross section of the end pieces 18 may be greater in area than the cross section within the bearing 17.
  • the bracket 6 is positively connected to the shaft 16.
  • Two eyelets 19 are laterally inserted into the bracket 6, in which the end pieces 3a of the shaft 16 are inserted.
  • the cross section of the end pieces 18 corresponds to the cross section of the two eyelets 19.
  • the non-circular Cross-sections ensure that the bracket 6 can not be rotated relative to the shaft 16 without fastening or securing pins are necessary. A pivoting of the bracket 6 thus also causes a rotation of the shaft 16th
  • the bracket 6 has a contour line 20 with four sections 21, 22, 23, 24.
  • the contour line 20 is perpendicular to the shaft 16, wherein the center of each of the sections 21, 22, 23, 24 has approximately the same distance from the shaft 16.
  • a block 25 is arranged, which has a flat surface 26.
  • the contour line 20 and the block 25 are arranged such that four positions of the bracket 6 result, in which the bracket 6 engages the block 25.
  • the four latching positions are shown with reference to FIGS. 3 to 10.
  • contour line 20 has a rectilinear portion 21 which bears against the flat surface 26 of the block 25. A pure rotation about the shaft 16 is prevented by the planar contact.
  • FIG. 5 and 6 show a second latching position for securing the first tool 1.
  • a path of the tool 2 in the direction of impact is limited by the collar 1 a through the front surface 2b of the bracket 6.
  • the contour line 20 has a second rectilinear portion 22 which bears against the flat surface 26 of the block 25. A pure rotation about the shaft 16 is prevented by the planar contact.
  • Fig. 7 and 8 show a third latching position for releasing the second tool 12 with a longitudinal groove 13.
  • the eccentrically arranged mandrel 15 does not engage in the longitudinal groove 13 a.
  • the contour line of the bracket 6 rests against the block 25 with the third section 23.
  • FIGS. 9 and 10 show a fourth latching position for securing the second tool 12.
  • the eccentrically arranged mandrel 15 engages in the longitudinal groove 13 and limits the movement of the tool 12 in the direction of impact 7.
  • the fourth section 24 is rectilinear and adjacent to the planar Block 24, whereby the bracket 6 engages.
  • a pivoting of the bracket 6 from a locked position is achieved by an elastic mounting of the shaft 16 in the bearing 17.
  • the bearing 17 is formed in such a longitudinal direction in a direction perpendicular to the axis of the shaft 16 that the shaft 16 in this
  • a ring 30 made of an elastic material holds the shaft 16 in a central position of the bearing 17.
  • the ring 30 may be supported on the tool holder 1 or on the bearing 17 in a circular receptacle 31.
  • the elastic ring 30 When pivoting the bracket 6, the elastic ring 30 is squeezed until a next latching position is achieved by a planar support of one of the straight sections 21, 22, 23, 24 on the flat surface 26.
  • Fig. 2 shows an embodiment in which instead of or in addition to the contour line 20 projections 40 or webs are provided on the bracket 6, which can engage in corresponding recesses 41 or pockets on the tool holder 1.
  • the profile of the projections and depressions is aligned along the shaft 16.
  • the depressions or associated projections may be disposed at different angles about the shaft 16 such that the bracket has correspondingly four latching positions.
  • the recesses 41 may be incorporated in an elastic element 42, which is supported perpendicular to the tool holder 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

The invention relates to a tool holder for a chipping hammer, having a tool receptacle (4) for receiving a tool (2) and a tool securing device for securing the tool (2) in the tool receptacle (4). The tool securing device according to the invention has a shaft (16) having an eccentrically arranged mandrel (15) and at least one end piece (18) and a bar (6) having at least one eye (19) in which the end piece (18) engages in a form-fitting manner. The tool securing device can be pivoted to at least one first position for inserting and removing the tool (2) and to at least one second position for securing the tool (2). The eye (19) has a non-circular cross-section.

Description

Hilti Aktiengesellschaft in Schaan Hilti corporation in Schaan
Fürstentum LiechtensteinPrincipality of Liechtenstein
Werkzeughalterungtool holder
GEBIET DER ERFINDUNGFIELD OF THE INVENTION
Die vorliegende Erfindung betrifft eine Werkzeughalterung für einen Meisselhammer.The present invention relates to a tool holder for a chisel hammer.
BESCHREIBUNG DES STANDES DER TECHNIKDESCRIPTION OF THE PRIOR ART
Werkzeughalterungen mit einer Verriegelung sind für Meisselhammer unter Anderem aus der EP 1 872 913 A2 bekannt. Die Werkzeughalterung kann zwei der gängigen Bauformen von Werkzeugen aufnehmen und durch Umlegen eines Bügels sichern. Ferner ist vorgesehen, dass der Bügel auch in einer Stellung arretiert, in welcher das Werkzeug in die Werkzeughalterung eingelegt oder aus ihr entfernt werden kann.Tool holders with a lock are known for chisel hammer among others from EP 1 872 913 A2. The tool holder can accommodate two of the common types of tools and secure by folding a strap. It is further provided that the bracket is locked in a position in which the tool can be inserted into the tool holder or removed from it.
Der Bügel ist an einer drehbaren Welle mittels Zapfen befestigt. Auf die Zapfen wirken während des schlagenden Betriebs des Meisselhammers hohe Kräfte. In Folge werden die Zapfen aus hochbeständigen Werkstoffen gefertigt.The bracket is attached to a rotatable shaft by means of pins. On the pins act during the beating operation of the chisel hammer high forces. As a result, the pins are made of highly resistant materials.
OFFENBARUNG DER ERFINDUNGDISCLOSURE OF THE INVENTION
Eine Aufgabe besteht darin eine andere Werkzeughalterung bereitzustellen.One object is to provide another tool holder.
Die erfindungsgemässe Werkzeughalterung für einen Meisselhammer weist eine Werkzeugaufnahme zur Aufnahme eines Werkzeugs und eine Werkzeugsicherung zumThe inventive tool holder for a chisel hammer has a tool holder for receiving a tool and a tool securing the
Sichern des Werkzeugs in der Werkzeugaufnahme auf. Die Werkzeugsicherung sieht eineSecure the tool in the tool holder. The tool safety sees a
Welle mit einem exzentrisch angeordneten Dorn und wenigstens einem Endstück und einenShaft with an eccentrically arranged mandrel and at least one tail and a
Bügel mit wenigstens einer Öse, in das Endstück formschlüssig eingreift, vor. Die Öse weist einen nicht-kreisförmigen Querschnitt auf. Die Werkzeugsicherung ist in wenigstens eine erste Stellung zum Einsetzen und Herausnehmen des Werkzeugs und in wenigstens eine zweite Stellung zum Sichern des Werkzeugs schwenkbar.Bracket with at least one eyelet, engages positively in the tail before. The eyelet has a non-circular cross-section. The tool lock is pivotable in at least a first position for insertion and removal of the tool and at least a second position for securing the tool.
Der vorzugsweise übereinstimmende nicht-kreisförmige Querschnitt von Öse und den Endstücken stellt sicher, dass sich Bügel und Welle nicht gegeneinander verdrehen können. Die beim Schlagen auftretenden Kräfte werden über im Wesentlichen den gesamten Umfang der Öse in die Welle eingeleitet. Hierdurch können ergeben sich geringe Belastungen an die Werkstoffe.The preferably matching non-circular cross-section of eyelet and the end pieces ensures that the bracket and shaft can not rotate against each other. The forces occurring when hitting are introduced into the shaft over substantially the entire circumference of the eye. This can result in low loads on the materials.
Vorzugsweise weist das Endstück einen grosseren Querschnitt als die Welle zwischen den Endstücken auf. Die Werkzeughalterung kann ein Lager zum Lagern der Welle aufweisen, wobei ein Querschnitt des Lagers gleich einem Querschnitt der Endstücke ist. Hierdurch wird eine einfache Montage ermöglicht. Die Welle wird in das Lager eingesetzt und der Bügel auf die Welle aufgesteckt. Ein weiteres Befestigen durch Zapfen kann entfallen.Preferably, the end piece has a larger cross section than the shaft between the end pieces. The tool holder may have a bearing for supporting the shaft, wherein a cross section of the bearing is equal to a cross section of the end pieces. As a result, a simple assembly is possible. The shaft is inserted into the bearing and the bracket is attached to the shaft. Another attachment by pins can be omitted.
Eine Ausgestaltung sieht vor, dass der Bügel eine Konturlinie senkrecht zu der Welle mit vier geradlinigen Abschnitten aufweist und eine ebene Anschlagfläche vorgesehen ist, wobei in jeder der ersten und zweiten Stellungen einer der vier geradlinigen Abschnitte an der ebenen Anschlagfläche anliegt.An embodiment provides that the bracket has a contour line perpendicular to the shaft with four straight sections and a flat stop surface is provided, wherein in each of the first and second positions one of the four rectilinear portions rests against the flat stop surface.
KURZE BESCHREIBUNG DER FIGURENBRIEF DESCRIPTION OF THE FIGURES
Die nachfolgende Beschreibung erläutert die Erfindung anhand von exemplarischen Ausführungsformen und Figuren. In den Figuren zeigen:The following description explains the invention with reference to exemplary embodiments and figures. In the figures show:
Fig. 1 eine WerkzeughalterungFig. 1 is a tool holder
Fig. 2 eine Werkzeughalterung undFig. 2 is a tool holder and
Fig. 4 bis 10 Längsschnitte durch die Werkzeughalterung von Fig. 1 oder Fig. 2.4 to 10 are longitudinal sections through the tool holder of FIG. 1 or FIG. 2.
Gleiche oder funktionsgleiche Elemente werden durch gleiche Bezugszeichen in den Figuren indiziert, soweit nicht anders angegeben.Identical or functionally identical elements are indicated by the same reference numerals in the figures, unless stated otherwise.
AUSFÜHRUNGSFORMEN DER ERFINDUNGEMBODIMENTS OF THE INVENTION
Fig. 1 zeigt in einer Explosionsansicht eine Ausführungsform einer Werkzeughalterung. Die Werkzeughalterung ist zum Haltern von Werkzeugen 1 eingerichtet, z.B. einem Meissel für einen Meisselhammer.Fig. 1 shows an exploded view of an embodiment of a tool holder. The tool holder is adapted to hold tools 1, e.g. a chisel for a chisel hammer.
Fig. 2 zeigt in einer Explosionsansicht eine weitere Ausführungsform einer Werkzeughalterung. Figuren 3 bis 6 zeigen in Längsschnitten eine Stellung zum Arretieren eines Werkzeugs erster Bauform in eine der Werkzeughalterungen und eine Stellung zum Einsetzen und Herausnehmen des Werkzeugs aus der Werkzeughalterung.Fig. 2 shows an exploded view of another embodiment of a tool holder. Figures 3 to 6 show in longitudinal sections a position for locking a tool of the first design in one of the tool holders and a position for insertion and removal of the tool from the tool holder.
Figuren 7 bis 10 zeigen in Längsschnitten eine Stellung zum Arretieren eines Werkzeugs zweiter Bauform in eine der Werkzeughalterungen und eine Stellung zum Einsetzen und Herausnehmen des Werkzeugs aus der Werkzeughalterung.Figures 7 to 10 show in longitudinal sections a position for locking a tool of the second type in one of the tool holders and a position for inserting and removing the tool from the tool holder.
Die Werkzeughalterungen 1 sind zum Aufnehmen von Werkzeugen eingerichtet, insbesondere von Meissein. Die bekannten Meissel 2 weisen zwei verschiedene Bauformen in Hinsicht ihrer Sicherung in einer Werkzeugaufnahme 4 auf. Die erste Bauform des Werkzeugs 2 ist schematisch in den Figuren 1 bis 4b dargestellt. Das im Wesentlichen zylindrische Werkzeug 2 weist einen ringförmigen Bund 5 auf. Die Werkzeughalterung 1 sieht einen Bügel 6 vor, der das Werkzeug 1 in Schlagrichtung 7 hinter dem Bund 5 derart teilweise umgreift, dass der Bügel 6 einen Anschlag in Schlagrichtung 7 für den Bund 5 bildet. Ein vorderer Abschnitt 8 des Bügels weist dafür eine halbkreisförmige Kontur auf, die das Werkzeug 2 neben dem Bund 5 umgreifen kann, jedoch einen geringen Durchmesser als der Bund 5 aufweist.The tool holders 1 are adapted to receive tools, in particular Meissein. The known chisel 2 have two different designs in terms of securing in a tool holder 4. The first design of the tool 2 is shown schematically in Figures 1 to 4b. The substantially cylindrical tool 2 has an annular collar 5. The tool holder 1 provides a bracket 6, which surrounds the tool 1 in the direction of impact 7 behind the collar 5 so partially that the bracket 6 forms a stop in the direction of impact 7 for the collar 5. A front portion 8 of the bracket has for this purpose a semicircular contour, which can surround the tool 2 in addition to the collar 5, but has a small diameter than the collar 5.
Die zweite Bauform des Werkzeugs 12 ist in den Längsschnitten der Figuren 5a bis 6b dargestellt. Das Werkzeug 12 weist eine Längsnut 13 entlang eines Schafts der Werkzeugs 12 auf, in die ein Dorn 15 der Werkzeughalterung 1 eingreifen kann.The second design of the tool 12 is shown in the longitudinal sections of Figures 5a to 6b. The tool 12 has a longitudinal groove 13 along a shank of the tool 12, in which a mandrel 15 of the tool holder 1 can engage.
Der Bügel 6 und der Dorn 15 sind schwenkbar um eine Achse angeordnet, um das Werkzeug 2, 12 aus der Werkzeughalterung 1 entfernen/einsetzten und arretieren zu können.The bracket 6 and the mandrel 15 are pivotally mounted about an axis to remove the tool 2, 12 from the tool holder 1 / insert and lock.
Der Dorn 15 ist auf einer Welle 16 angeordnet. Die Welle 16 ist in ein Lager 17 eingesetzt, in welchem die Welle 16 frei drehbar ist. Die Welle 16 weist innerhalb des Lagers 17 einen kreisförmigen Querschnitt auf. Die Welle 16 weist an ihren Enden zwei Endstücke 18 mit einem nicht-kreisförmigen Querschnitt auf. Der Querschnitt der Endstücke 18 kann flächenmässig grösser als der Querschnitt innerhalb des Lagers 17 sein.The mandrel 15 is arranged on a shaft 16. The shaft 16 is inserted into a bearing 17, in which the shaft 16 is freely rotatable. The shaft 16 has a circular cross section within the bearing 17. The shaft 16 has at its ends two end pieces 18 with a non-circular cross-section. The cross section of the end pieces 18 may be greater in area than the cross section within the bearing 17.
Der Bügel 6 ist mit der Welle 16 formschlüssig verbunden. Zwei Ösen 19 sind seitlich in den Bügel 6 eingebracht, in die die Endstücke 3a der Welle 16 eingesetzt sind. Der Querschnitt der Endstücke 18 entspricht dem Querschnitt der beiden Ösen 19. Die nicht-kreisförmigen Querschnitte stellen sicher, dass der Bügel 6 nicht gegenüber der Welle 16 verdreht werden kann, ohne dass Befestigung- oder Sicherungszapfen notwendig sind. Ein Schwenken des Bügels 6 bewirkt somit auch ein Drehen der Welle 16.The bracket 6 is positively connected to the shaft 16. Two eyelets 19 are laterally inserted into the bracket 6, in which the end pieces 3a of the shaft 16 are inserted. The cross section of the end pieces 18 corresponds to the cross section of the two eyelets 19. The non-circular Cross-sections ensure that the bracket 6 can not be rotated relative to the shaft 16 without fastening or securing pins are necessary. A pivoting of the bracket 6 thus also causes a rotation of the shaft 16th
Der Bügel 6 weist eine Konturlinie 20 mit vier Abschnitten 21 , 22, 23, 24 auf. Die Konturlinie 20 verläuft senkrecht zu der Welle 16, wobei die Mitte jeder der Abschnitte 21 , 22, 23, 24 etwa den gleichen Abstand zu der Welle 16 aufweist. An dem Lager 17 ist ein Block 25 angeordnet, der eine ebene Fläche 26 aufweist. Die Konturlinie 20 und der Block 25 sind derart eingerichtet, dass sich vier Stellungen des Bügels 6 ergeben, in denen der Bügel 6 an dem Block 25 einrastet. Die vier einrastenden Stellungen werden anhand der Figuren 3 bis 10 gezeigt.The bracket 6 has a contour line 20 with four sections 21, 22, 23, 24. The contour line 20 is perpendicular to the shaft 16, wherein the center of each of the sections 21, 22, 23, 24 has approximately the same distance from the shaft 16. On the bearing 17, a block 25 is arranged, which has a flat surface 26. The contour line 20 and the block 25 are arranged such that four positions of the bracket 6 result, in which the bracket 6 engages the block 25. The four latching positions are shown with reference to FIGS. 3 to 10.
Fig. 3 und 4 zeigen eine erste einrastende Stellung zum Lösen des ersten Werkzeugs 1. Die Konturlinie 20 weist einen geradlinigen Abschnitt 21 auf, der an der ebenen Fläche 26 des Blocks 25 anliegt. Eine reine Drehung um die Welle 16 wird durch die geradflächige Anlage verhindert.3 and 4 show a first latching position for releasing the first tool 1. The contour line 20 has a rectilinear portion 21 which bears against the flat surface 26 of the block 25. A pure rotation about the shaft 16 is prevented by the planar contact.
Fig. 5 und 6 zeigen eine zweite einrastende Stellung zum Sichern des ersten Werkzeugs 1. Ein Weg des Werkzeuges 2 in Schlagrichtung wird durch den Bund 1 a durch die vordere Fläche 2b des Bügels 6 begrenzt. Die Konturlinie 20 weist einen zweiten geradlinigen Abschnitt 22 auf, der an der ebenen Fläche 26 des Blocks 25 anliegt. Eine reine Drehung um die Welle 16 wird durch die geradflächige Anlage verhindert.5 and 6 show a second latching position for securing the first tool 1. A path of the tool 2 in the direction of impact is limited by the collar 1 a through the front surface 2b of the bracket 6. The contour line 20 has a second rectilinear portion 22 which bears against the flat surface 26 of the block 25. A pure rotation about the shaft 16 is prevented by the planar contact.
Fig. 7 und 8 zeigen eine dritte einrastende Stellung zum Lösen des zweiten Werkzeugs 12 mit einer Längsnut 13. Der exzentrisch angeordnete Dorn 15 greift nicht in die Längsnut 13 ein. Die Konturlinie des Bügels 6 liegt mit dem dritten Abschnitt 23 an dem Block 25 eingerastet an.Fig. 7 and 8 show a third latching position for releasing the second tool 12 with a longitudinal groove 13. The eccentrically arranged mandrel 15 does not engage in the longitudinal groove 13 a. The contour line of the bracket 6 rests against the block 25 with the third section 23.
Fig. 9 und 10 zeigen eine vierte einrastende Stellung zum Sichern des zweiten Werkzeugs 12. Der exzentrisch angeordnete Dorn 15 greift in die Längsnut 13 ein und begrenzt die Bewegung des Werkzeugs 12 in Schlagrichtung 7. Der vierte Abschnitt 24 ist geradlinig und grenzt an den ebenen Block 24 an, wodurch der Bügel 6 einrastet.9 and 10 show a fourth latching position for securing the second tool 12. The eccentrically arranged mandrel 15 engages in the longitudinal groove 13 and limits the movement of the tool 12 in the direction of impact 7. The fourth section 24 is rectilinear and adjacent to the planar Block 24, whereby the bracket 6 engages.
Ein Schwenken des Bügels 6 aus einer eingerasteten Stellung wird durch eine elastische Lagerung der Welle 16 in dem Lager 17 erreicht. Das Lager 17 ist in einer Richtung senkrecht zur Achse der Welle 16 derart länglich ausgebildet, dass die Welle 16 in dieserA pivoting of the bracket 6 from a locked position is achieved by an elastic mounting of the shaft 16 in the bearing 17. The bearing 17 is formed in such a longitudinal direction in a direction perpendicular to the axis of the shaft 16 that the shaft 16 in this
Richtung verschiebbar ist. Ein Ring 30 aus einem elastischen Material hält die Welle 16 in einer Mittellage des Lagers 17. Der Ring 30 kann sich an der Werkzeughalterung 1 oder an dem Lager 17 in einer kreisförmigen Aufnahme 31 abstützen.Direction is displaceable. A ring 30 made of an elastic material holds the shaft 16 in a central position of the bearing 17. The ring 30 may be supported on the tool holder 1 or on the bearing 17 in a circular receptacle 31.
Beim Schwenken des Bügels 6 wird der elastische Ring 30 gequetscht, bis eine nächste einrastende Stellung durch eine plane Auflage eines der geradlinigen Abschnitte 21 , 22, 23, 24 auf der ebenen Fläche 26 erreicht wird.When pivoting the bracket 6, the elastic ring 30 is squeezed until a next latching position is achieved by a planar support of one of the straight sections 21, 22, 23, 24 on the flat surface 26.
Fig. 2 zeigt eine Ausführungsform, bei der anstelle oder zusätzlich zu der Konturlinie 20 Vorsprünge 40 oder Stege an dem Bügel 6 vorgesehen sind, die in entsprechende Vertiefungen 41 oder Taschen an der Werkzeugaufnahme 1 eingreifen können. Das Profil der Vorsprünge und Vertiefungen ist längs der Welle 16 ausgerichtet. Die Vertiefungen oder zugehörigen Vorsprünge können in verschiedenen Winkel um die Welle 16 angeordnet sein, derart dass der Bügel entsprechend vier einrastende Stellungen aufweist. Die Vertiefungen 41 können in einem elastischen Element 42 eingebracht sein, das sich senkrecht gegen die Werkzeugaufnahme 4 abstützt. Fig. 2 shows an embodiment in which instead of or in addition to the contour line 20 projections 40 or webs are provided on the bracket 6, which can engage in corresponding recesses 41 or pockets on the tool holder 1. The profile of the projections and depressions is aligned along the shaft 16. The depressions or associated projections may be disposed at different angles about the shaft 16 such that the bracket has correspondingly four latching positions. The recesses 41 may be incorporated in an elastic element 42, which is supported perpendicular to the tool holder 4.

Claims

PATENTANSPRÜCHE
1. Werkzeughalterung für einen Meisselhammer, das eine Werkzeugaufnahme (4) zur Aufnahme eines Werkzeugs und eine Werkzeugsicherung zum Sichern des Werkzeugs in der Werkzeugaufnahme (4) aufweist, wobei die Werkzeugsicherung eine Welle (16) mit einem exzentrisch angeordneten Dorn (15) und wenigstens einem Endstück (18) und einen Bügel (6) mit wenigstens einer Öse (19), in das Endstück (18) formschlüssig eingreift, vorsieht, wobei die Werkzeugsicherung in eine wenigstens eine erste Stellung zum Einsetzen und Herausnehmen des Werkzeugs und in wenigstens eine zweite Stellung zum Sichern des Werkzeugs schwenkbar ist, dadurch gekennzeichnet, dass die Öse (19) einen nicht-kreisförmigen Querschnitt aufweist.A tool holder for a chisel having a tool holder (4) for receiving a tool and a tool holder for securing the tool in the tool holder (4), wherein the tool securing a shaft (16) with an eccentrically arranged mandrel (15) and at least an end piece (18) and a bracket (6) with at least one eyelet (19), in the end piece (18) positively engages, provides, wherein the tool safety in at least a first position for insertion and removal of the tool and at least a second Position for securing the tool is pivotable, characterized in that the eyelet (19) has a non-circular cross-section.
2. Werkzeughalterung nach Anspruch 1 , dadurch gekennzeichnet, dass das Endstück (18) einen grosseren Querschnitt als die Welle (16) zwischen den Endstücken (18) aufweist.2. Tool holder according to claim 1, characterized in that the end piece (18) has a larger cross section than the shaft (16) between the end pieces (18).
3. Werkzeughalterung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Welle (16) zwischen den Endstücken (18) einen kreisförmigen Querschnitt aufweist.3. Tool holder according to claim 1 or 2, characterized in that the shaft (16) between the end pieces (18) has a circular cross-section.
4. Werkzeughalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Werkzeughalterung ein Lager (17) zum Lagern der Welle (16) aufweist, wobei ein Querschnitt des Lagers (17) gleich einem Querschnitt der Endstücke (18) ist.4. Tool holder according to one of the preceding claims, characterized in that the tool holder has a bearing (17) for supporting the shaft (16), wherein a cross section of the bearing (17) is equal to a cross section of the end pieces (18).
5. Werkzeughalterung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Welle (16) in dem Lager (17) in einer Richtung senkrecht zu einer Achse der Welle (16) aus einer Mittellage verschiebbar ist und ein elastisches Rückstellelement (30) zum Zurückschieben der Welle (16) in die Mittellage vorgesehen ist.5. Tool holder according to one of the preceding claims, characterized in that the shaft (16) in the bearing (17) in a direction perpendicular to an axis of the shaft (16) from a central position is displaceable and an elastic return element (30) for pushing back the shaft (16) is provided in the middle position.
6. Werkzeughalterung nach dem Anspruch 5, dadurch gekennzeichnet, dass das Rückstellelement (30) einen elastischen Ring (30) aufweist, der die Welle (16) umgibt und an dem Lager (17) abgestützt ist.6. Tool holder according to claim 5, characterized in that the restoring element (30) has an elastic ring (30) which surrounds the shaft (16) and is supported on the bearing (17).
7. Werkzeughalterung nach einem der vorhergehenden Ansprüche, dass der Bügel (6) eine Konturlinie senkrecht zu der Welle (16) mit vier geradlinigen Abschnitten (21 , 22, 23, 24) aufweist und ein ebene Anschlagfläche (26) vorgesehen ist, wobei in jeder der ersten und zweiten Stellungen einer der vier geradlinigen Abschnitte an der ebenen Anschlagfläche anliegt. 7. Tool holder according to one of the preceding claims, that the bracket (6) has a contour line perpendicular to the shaft (16) with four straight sections (21, 22, 23, 24) and a flat stop surface (26) is provided, wherein everyone who first and second positions of one of the four rectilinear portions abuts the flat abutment surface.
EP10700874.0A 2009-01-30 2010-01-21 Tool holder Active EP2391484B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009008191A DE102009008191A1 (en) 2009-01-30 2009-01-30 tool holder
PCT/EP2010/050658 WO2010086270A1 (en) 2009-01-30 2010-01-21 Tool holder

Publications (2)

Publication Number Publication Date
EP2391484A1 true EP2391484A1 (en) 2011-12-07
EP2391484B1 EP2391484B1 (en) 2018-03-07

Family

ID=42040503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10700874.0A Active EP2391484B1 (en) 2009-01-30 2010-01-21 Tool holder

Country Status (4)

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US (1) US9067312B2 (en)
EP (1) EP2391484B1 (en)
DE (1) DE102009008191A1 (en)
WO (1) WO2010086270A1 (en)

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Also Published As

Publication number Publication date
US9067312B2 (en) 2015-06-30
DE102009008191A1 (en) 2010-08-05
US20120038119A1 (en) 2012-02-16
EP2391484B1 (en) 2018-03-07
WO2010086270A1 (en) 2010-08-05

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