EP1157790B1 - Drill bit chuck - Google Patents
Drill bit chuck Download PDFInfo
- Publication number
- EP1157790B1 EP1157790B1 EP01810479A EP01810479A EP1157790B1 EP 1157790 B1 EP1157790 B1 EP 1157790B1 EP 01810479 A EP01810479 A EP 01810479A EP 01810479 A EP01810479 A EP 01810479A EP 1157790 B1 EP1157790 B1 EP 1157790B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- radially
- control sleeve
- tool holder
- spring
- 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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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
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0038—Locking members of special shape
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- 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
- Y10T279/17076—Spreading elements
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- 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
- Y10T279/17666—Radially reciprocating jaws
- Y10T279/17692—Moving-cam actuator
- Y10T279/17743—Reciprocating cam sleeve
-
- 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
- Y10T279/17761—Side detent
- Y10T279/17786—Spring
Definitions
- the invention relates to a tool holder for a drill bit, advantageously connectable with an at least partially striking hand tool, such as a hammer drill or a chisel hammer.
- This invention contemplates tool holders of at least partially striking hand tools. Introduced for appropriate use in such a tool holder of the power tool tool is rotatably and limited axially movably received in this.
- radially movable engagement elements of the tool holder engage in radial recesses in the clamping area of the shank of the tool and limit the axial mobility to a region predetermined by the axial length of the recesses.
- a transmission of the torque takes place.
- the impact of the hand tool device takes place directly on the axial end face of the tool and thus not on the tool holder.
- DE19636293A1 has a tool holder for a limited axially movable over along the tool axis finite radial recesses recordable tool radially movable engagement elements which engage positively in the radial recesses and on a externally operable, axially resiliently biased by a locking spring sliding, control sleeve are releasable.
- a resilient retaining element for the respective end position of the movable between the engagement position and the release position control sleeve is additionally provided, which is arranged between the control sleeve and the clamping region of the shank of the tool.
- a bistable state of the tool holder is formed in the engaged position and in the release position, whereby a change of the tool with one hand is possible.
- the tool holder is first brought into the release position and then changed the tool, wherein upon insertion of the replaced tool, the holding member releases the control sleeve, which automatically merges into the engaged position.
- the tool holder for a rotationally fixed rotationally positive driving elements and limited axially movable over along the tool axis finite radial recesses of the Einspann Schemees of the shaft recordable tool radially movable engagement elements which engage positively in the radial recesses and biased by an externally actuated, axially resilient slidable, control sleeve are detachable.
- An arranged between the control sleeve and the clamping portion of the shaft of the tool resilient holding element in the form of a radially resilient leaf spring or a radially spring-mounted ball holds against introduced the retaining spring force of the holding element tool via a radially movable and engaging in the control sleeve locking means the control sleeve in the release position , Thus, an axial displacement of the control sleeve over the locking means away is prevented.
- the holding element immediately after removal of the tool relaxes the holding element and the control sleeve jumps back into the locking position.
- the changed tool presses on the locking elements with an axial constraint, the control sleeve partially in the direction of holding position but without reaching them.
- the locking elements engage radially in the recesses, release the axial constraint on the control sleeve and this jumps through the prestressed locking spring in the locking position, in which the locking elements are locked radially form-fitting manner.
- control sleeve is formed in a flange shape, wherein the tool facing part is radially coaxially from a front sleeve and the adjacent radially beyond a smooth grading, the hand tool facing part with a radially larger diameter from the outside operable, in particular directly by hand in the direction Hand tool is axially displaceable.
- control sleeve forms a radially ausrestoryen web as a stop for a locking spring, which is pressure-biased against a positioned in the direction of the hand tool unit axial stop.
- a locking spring which is pressure-biased against a positioned in the direction of the hand tool unit axial stop.
- an axially freely movable control sleeve is automatically moved into the locking position and forms with parts of its inner circumferential surface at least partially a radial positive stop for the radially movable locking elements.
- the locking elements are also advantageous in addition to other locations of the tool holder radially form-fitting manner.
- the locking elements can form a one-sided axial constraint on the control sleeve with parts of their end faces oriented in the direction of the hand tool device, advantageously on the radially branching web.
- the four-locking elements engage via radially outwardly oriented projections in recesses of the control sleeve and are thus connected in a form-fitting, movable manner with the latter in an axially movable manner.
- the holding element is advantageously formed in a first embodiment as axially auskargende, radially resilient leaf spring, which advantageously has an at least partially circumferential circumferential attachment part.
- the holding element has a radially inner contact point to the clamping region of the shank of an inserted tool for controlling the holding element and a radially outer latching means for holding the control sleeve.
- the retaining element radially movable latching means is advantageously formed as an angled on both sides chamfered nose at the end of the axially auskargenden, radially resilient part of the leaf spring.
- the locking means can be displaced radially by an axial displacement of the control sleeve against the bias of the retaining element.
- the radially auskargende part of the leaf spring is advantageously designed folded over in the radial direction, whereby the Garfederweg the locking means is increased.
- the holding element is designed as a spring-mounted ball, which can serve by a circumferentially and axially and limited radially movable opening of the tool holder in contact with the clamping area of the shank of a tool inserted into the tool holder.
- the radially outwardly projecting dome of the spring-mounted ball forms a two-sided bevel, which is assigned as a corresponding retaining spring advantageously a radially resilient, radially inwardly beveled on both sides sleeve spring axially movable, wherein the sleeve spring is advantageously connected to the control sleeve.
- Fig. 1b has a tool holder 1 for a rotatably lubformschlüssige entrainment elements 2 and axially movable limited along the tool axis finite radial recesses 3 of the clamping portion of the shaft recorded tool 4 radially movable engagement elements on, which engage positively in the radial recesses 3 and a directly externally by hand operable, axially resiliently biased sliding, control sleeve 6 are releasable.
- the flange-shaped control sleeve 6 is in the engaged position. 7
- a resilient retaining element 8 in the form of a radially resilient leaf spring which with imported tool 4 against the retaining spring force of the retaining element 8 via a radially movable and engaging in the control sleeve 6 locking means 9, the control sleeve 6 in the axially displaced from the engagement position 7 release position 10 holds.
- the radially movable engagement elements 5 are movable axially positively connected via engaging in recesses 11 of the control sleeve 6 extensions 12 of the engagement elements 5 and were moved with this axially from the engaged position 7.
- a connected to the control sleeve 6, radially auskargenden web 13 as a stop for a pressure-biased locking spring 14 is held by the locking means 9 in the release position 10.
- Fig. 5a and the offset by 90 ° cut Fig. 5b is moved directly from the locking position 7 in the direction of the release position 10 immediately at the tool holder by the force exerted by the male tool 4 on the locking elements 5 on the control sleeve 6 axial compulsion, without to achieve this.
- the locking means 9 of the holding element 8 is not in the, an axial displacement inhibiting, holding position with respect to the web 13 of the control sleeve 6 passes.
- the holding member 8 is formed as a ball, which by a circumferentially and axially and limited radially movable opening of the tool holder 1 in contact with the clamping area of the shank of the tool holder inserted tool 4 is used, wherein the radially outwardly projecting dome 15 of the ball forms a chamfer on both sides, which is associated with a radially resilient, radially inside chamfered on both sides sleeve spring 16 axially movable, wherein the sleeve spring is connected to the control sleeve 6.
- an axial movement of the located in the release position 10 control sleeve 6 is inhibited in the direction of locking position 7.
- the holding element 8 is formed as an axially auskargende, radially resilient leaf spring, which has an at least partially circumferential circumferential fixing member 17, a radially inner contact point 18 to the clamping region of the shaft of an inserted tool for controlling the control sleeve and a radially outer latching means 9 for holding the control sleeve.
- the holding element 8 radially movable latching means 9 is angled on both sides chamfered nose at the end of the axial auskargenden, radially resilient part of the leaf spring.
- the radially auskargende part of the leaf spring is executed folded over in the radial direction.
- control sleeve 6 is connected to the holding spring sleeve 16 in variant II, which has two-sided chamfers 19 in the region of engagement of the dome of the ball.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
Die Erfindung bezeichnet eine Werkzeugaufnahme für einen Bohrmeissel, vorteilhaft verbindbar mit einem zumindest teilweise schlagenden Handwerkzeuggerät, wie einen Bohrhammer oder einen Meisselhammer.The invention relates to a tool holder for a drill bit, advantageously connectable with an at least partially striking hand tool, such as a hammer drill or a chisel hammer.
Diese Erfindung betrachtet Werkzeugaufnahmen von zumindest teilweise schlagenden Handwerkzeuggeräten. Das zur zweckentsprechenden Benutzung in eine derartige Werkzeugaufnahme des Handwerkzeuggerätes eingeführte Werkzeug wird in dieser drehfest und begrenzt axial beweglich gelagert aufgenommen. Dazu greifen radial bewegliche Eingriffselemente der Werkzeugaufnahme in radiale Aussparungen im Einspannbereich des Schafts des Werkzeuges ein und begrenzen die axiale Beweglichkeit auf einen von der axialen Länge der Aussparungen vorgegebenen Bereich. Über drehformschlüssige Mitnahmenuten im Einspannbereich des Schafts erfolgt eine Übertragung des Drehmoments. Der Schlag des Handwerkzeuggerätes erfolgt direkt auf die axiale Stirnfläche des Werkzeugs und somit nicht auf die Werkzeugaufnahme.This invention contemplates tool holders of at least partially striking hand tools. Introduced for appropriate use in such a tool holder of the power tool tool is rotatably and limited axially movably received in this. For this purpose, radially movable engagement elements of the tool holder engage in radial recesses in the clamping area of the shank of the tool and limit the axial mobility to a region predetermined by the axial length of the recesses. About rotationally positive driving grooves in the clamping region of the shaft, a transmission of the torque takes place. The impact of the hand tool device takes place directly on the axial end face of the tool and thus not on the tool holder.
Nach der
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Es ist die Aufgabe der Erfindung, eine weitere Lösung zur Ausführung einer mit nur einer Hand zum Wechseln des Werkzeugs bedienbaren Werkzeugaufnahme aufzuzeigen.It is the object of the invention to show a further solution for the execution of a tool holder which can be operated with only one hand to change the tool.
Die Aufgabe wird im wesentlichen durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is essentially achieved by the features of the independent claims. Advantageous developments emerge from the subclaims.
Im wesentlichen weist die Werkzeugaufnahme für ein drehfest über drehformschlüssige Mitnahmeelemente und begrenzt axial beweglich über längs der Werkzeugachse endliche radiale Aussparungen des Einspannbereiches des Schaftes aufnehmbares Werkzeug radial bewegliche Eingriffselemente auf, die formschlüssig in die radialen Aussparungen eingreifen und über eine von Aussen betätigbare, axial federnd vorgespannt verschiebbare, Steuerungshülse lösbar sind. Ein zwischen der Steuerungshülse und dem Einspannbereich des Schafts des Werkzeugs angeordnetes federndes Halteelement in Form einer radial federnden Blattfeder oder einer radial federnd gelagerten Kugel hält bei gegen die Haltefederkraft des Halteelements eingeführtem Werkzeug über ein radial bewegliches und in die Steuerungshülse eingreifendes Rastmittel die Steuerungshülse in der Freigabeposition. Somit wird eine axiale Verschiebung der Steuerungshülse über das Rastmittel hinweg verhindert.Essentially, the tool holder for a rotationally fixed rotationally positive driving elements and limited axially movable over along the tool axis finite radial recesses of the Einspannbereiches of the shaft recordable tool radially movable engagement elements which engage positively in the radial recesses and biased by an externally actuated, axially resilient slidable, control sleeve are detachable. An arranged between the control sleeve and the clamping portion of the shaft of the tool resilient holding element in the form of a radially resilient leaf spring or a radially spring-mounted ball holds against introduced the retaining spring force of the holding element tool via a radially movable and engaging in the control sleeve locking means the control sleeve in the release position , Thus, an axial displacement of the control sleeve over the locking means away is prevented.
Somit entspannt sich unmittelbar nach Entnahme des Werkzeugs das Halteelement und die Steuerungshülse springt in die Verriegelungsposition zurück. Beim Einführen drückt das gewechselte Werkzeug über die Verriegelungselemente mit einem axialen Zwang die Steuerungshülse teilweise in Richtung Halteposition ohne diese jedoch zu erreichen. Bei vollständiger Einführung des Werkzeugs greifen die Verriegelungselemente radial in die Aussparungen ein, geben den axialen Zwang auf die Steuerungshülse frei und diese springt durch die vorgespannte Verriegelungsfeder in die Verriegelungsposition, bei welcher die Verriegelungselemente radial formschlüssig arretiert werden.Thus, immediately after removal of the tool relaxes the holding element and the control sleeve jumps back into the locking position. During insertion, the changed tool presses on the locking elements with an axial constraint, the control sleeve partially in the direction of holding position but without reaching them. Upon complete insertion of the tool, the locking elements engage radially in the recesses, release the axial constraint on the control sleeve and this jumps through the prestressed locking spring in the locking position, in which the locking elements are locked radially form-fitting manner.
Vorteilhaft ist die Steuerungshülse flanschförmig ausgebildet, wobei der dem Werkzeug zugewandte Teil von einer vorderen Hülse radial koaxial umfasst wird und der über eine radiale glatte Stufung angrenzende, dem Handwerkzeuggerät zugewandte, Teil mit einem radial grösseren Durchmesser von aussen betätigbar, insbesondere unmittelbar von Hand in Richtung Handwerkzeuggerät axial verschiebbar ist.Advantageously, the control sleeve is formed in a flange shape, wherein the tool facing part is radially coaxially from a front sleeve and the adjacent radially beyond a smooth grading, the hand tool facing part with a radially larger diameter from the outside operable, in particular directly by hand in the direction Hand tool is axially displaceable.
Im Inneren bildet die Steuerungshülse einen radial auskargenden Steg als Anschlag für eine Verriegelungsfeder aus, welche gegen einen in Richtung Handwerkzeuggerät positionierten axialen Anschlag druckvorgespannt ist. Dadurch wird eine axial frei bewegliche Steuerungshülse automatisch in die Verriegelungsposition verschoben und bildet mit Teilen ihrer inneren Mantelfläche zumindest teilweise einen radialen formschlüssigen Anschlag für die radial beweglichen Verriegelungselemente aus. Die Verriegelungselemente liegen zudem vorteilhaft zusätzlich an anderen Stellen der Werkzeugaufnahme radial formschlüssig an.Inside, the control sleeve forms a radially ausrebilden web as a stop for a locking spring, which is pressure-biased against a positioned in the direction of the hand tool unit axial stop. As a result, an axially freely movable control sleeve is automatically moved into the locking position and forms with parts of its inner circumferential surface at least partially a radial positive stop for the radially movable locking elements. The locking elements are also advantageous in addition to other locations of the tool holder radially form-fitting manner.
Die Verriegelungselemente können mit Teilen ihrer in Richtung Handwerkzeuggerät orientierten Stirnflächen einen einseitigen axialen Zwang auf die Steuerungshülse ausbilden, vorteilhaft auf den radial auskargenden Steg.The locking elements can form a one-sided axial constraint on the control sleeve with parts of their end faces oriented in the direction of the hand tool device, advantageously on the radially branching web.
Vorteilhaft greifen die Vierriegelungselemente über radial nach Aussen orientierte Fortsätze in Ausnehmungen der Steuerungshülse ein und sind somit beweglich formschlüssig axial mit dieser verbunden.Advantageously, the four-locking elements engage via radially outwardly oriented projections in recesses of the control sleeve and are thus connected in a form-fitting, movable manner with the latter in an axially movable manner.
Das Halteelement ist in einer ersten Ausführungsvariante vorteilhaft als axial auskargende, radial federnde Blattfeder ausgebildet, welche vorteilhaft einen zumindest teilweise umfänglich umlaufenden Befestigungsteil aufweist. Das Halteelement weist einen radial inneren Kontaktpunkt zum Einspannbereich des Schaftes eines eingeführten Werkzeugs zur Steuerung des Halteelementes und ein radial äusseres Rastmittel zum Halten der Steuerungshülse auf.The holding element is advantageously formed in a first embodiment as axially auskargende, radially resilient leaf spring, which advantageously has an at least partially circumferential circumferential attachment part. The holding element has a radially inner contact point to the clamping region of the shank of an inserted tool for controlling the holding element and a radially outer latching means for holding the control sleeve.
Das am Halteelement radial bewegliche Rastmittel ist vorteilhaft als abgewinkelte beidseitig angefaste Nase am Ende des axial auskargenden, radial federnden Teils der Blattfeder ausgebildet. In Verbindung mit zwei zugeordneten Fasen am inneren Ende des radial auskargenden Stegs der Steuerungshülse kann durch eine axiale Verschiebung der Steuerungshülse entgegen der Vorspannung des Halteelementes das Rastmittel radial verschoben werden.The retaining element radially movable latching means is advantageously formed as an angled on both sides chamfered nose at the end of the axially auskargenden, radially resilient part of the leaf spring. In conjunction with two associated chamfers at the inner end of the radially ausarchenden web of the control sleeve, the locking means can be displaced radially by an axial displacement of the control sleeve against the bias of the retaining element.
Der radial auskargende Teil der Blattfeder ist vorteilhaft in radialer Richtung umgefaltet ausgeführt, wodurch der Haltefederweg des Rastmittels vergrössert wird.The radially auskargende part of the leaf spring is advantageously designed folded over in the radial direction, whereby the Haltefederweg the locking means is increased.
In einer weiteren Ausführungsvariante ist das Halteelement als gefedert gelagerte Kugel ausgebildet, welche durch eine diese umfänglich und axial sowie begrenzt radial beweglich führende Öffnung der Werkzeugaufnahme in Kontakt mit dem Einspannbereich des Schaftes eines in die Werkzeugaufnahme eingeführten Werkzeugs dienen kann. Die radial nach aussen ragende Kalotte der federnd gelagerten Kugel bildet eine beidseitige Fase aus, der als zugehörige Haltefeder vorteilhaft eine radial federnde, radial innen beidseitig angefaste Hülsenfeder axial beweglich zugeordnet ist, wobei die Hülsenfeder vorteilhaft mit der Steuerungshülse verbunden ist.In a further embodiment, the holding element is designed as a spring-mounted ball, which can serve by a circumferentially and axially and limited radially movable opening of the tool holder in contact with the clamping area of the shank of a tool inserted into the tool holder. The radially outwardly projecting dome of the spring-mounted ball forms a two-sided bevel, which is assigned as a corresponding retaining spring advantageously a radially resilient, radially inwardly beveled on both sides sleeve spring axially movable, wherein the sleeve spring is advantageously connected to the control sleeve.
Die Erfindung wird bezüglich zweier vorteilhafter Ausführungsbeispiele näher erläutert mit:
- Fig. 1a und Fig. 1b als Variante I in Verriegelungsposition
- Fig. 2a und Fig. 2b als Variante I in Freigabeposition
- Fig. 3a und Fig. 3b als Variante I während der Werkzeugentnahme
- Fig. 4a und Fig. 4b als Variante I nach der Werkzeugentnahme
- Fig. 5a und Fig. 5b als Variante I während der Werkzeugaufnahme
- Fig. 6a und Fig. 6b als Variante II in Freigabeposition
- Fig. 7 als Halteelement bei Variante I
- Fig. 8 als Steuerungshülse bei Variante II
- Fig. 1a and Fig. 1b as a variant I in the locked position
- Fig. 2a and Fig. 2b as variant I in the release position
- Fig. 3a and Fig. 3b as variant I during tool removal
- Fig. 4a and Fig. 4b as a variant I after the tool removal
- Fig. 5a and Fig. 5b as variant I during the tool holder
- Fig. 6a and Fig. 6b as a variant II in the release position
- Fig. 7 as a holding element in variant I
- Fig. 8 as a control sleeve in variant II
Nach Fig. 1a bzw. der um 90° versetzt geschnittenen Fig. 1 b weist eine Werkzeugaufnahme 1 für ein drehfest über drehformschlüssige Mitnahmeelemente 2 und begrenzt axial beweglich über längs der Werkzeugachse endliche radiale Aussparungen 3 des Einspannbereiches des Schaftes aufgenommenes Werkzeug 4 radial bewegliche Eingriffselemente 5 auf, die formschlüssig in die radialen Aussparungen 3 eingreifen und über eine unmittelbar von Aussen per Hand betätigbare, axial federnd vorgespannt verschiebbare, Steuerungshülse 6 lösbar sind. Die flanschförmig ausgebildete Steuerungshülse 6 befindet sich in Eingriffsposition 7.According to Fig. 1a and the offset by 90 ° cut Fig. 1 b has a
Nach Fig. 2a bzw. der um 90° versetzt geschnittenen Fig. 2b ist zwischen der Steuerungshülse 6 und dem Einspannbereich des Schafts des Werkzeugs 4 ein federndes Halteelement 8 in Form einer radial federnden Blattfeder angeordnet, welche bei eingeführtem Werkzeug 4 gegen die Haltefederkraft des Halteelements 8 über ein radial bewegliches und in die Steuerungshülse 6 eingreifendes Rastmittel 9 die Steuerungshülse 6 in der von der Eingriffsposition 7 axial versetzten Freigabeposition 10 hält. Die radial beweglichen Eingriffselemente 5 sind beweglich axial formschlüssig über in Ausnehmungen 11 der Steuerungshülse 6 eingreifende Fortsätze 12 der Eingriffselemente 5 verbunden und wurden mit dieser axial aus der Eingriffsposition 7 verschoben. Ein mit der Steuerungshülse 6 verbundener, radial auskargenden Steg 13 als Anschlag für eine druckvorgespannte Verriegelungsfeder 14 wird durch das Rastmittel 9 in der Freigabeposition 10 gehalten.According to Fig. 2a and the offset by 90 ° cut Fig. 2b is arranged between the
Nach Fig. 3a bzw. der um 90° versetzt geschnittenen Fig. 3b ist unmittelbar bei der Entnahme des Werkzeugs 4 das Halteelement 8 entspannt und dessen Rastmittel 9 hat keinen die axiale Verschiebung der Steuerungshülse 6 hemmenden Kontakt zu dieser.According to Fig. 3a and the offset by 90 ° cut Fig. 3b is immediately upon removal of the
Nach Fig. 4a bzw. der um 90° versetzt geschnittenen Fig. 4b hat die Verriegelungsfeder 14 nach der Entnahme des Werkzeugs 4 die Steuerhülse 6 in die Verriegelungsposition 7 zurück verschoben.According to Fig. 4a and the offset by 90 ° cut Fig. 4b has the locking
Nach Fig. 5a bzw. der um 90° versetzt geschnittenen Fig. 5b ist unmittelbar bei der Werkzeugaufnahme durch den vom aufzunehmenden Werkzeug 4 über die Verriegelungselemente 5 auf die Steuerhülse 6 ausgeübten axialen Zwang diese von der Verriegelungsposition 7 in Richtung der Freigabeposition 10 verschoben, ohne diese zu erreichen. Dadurch ist das Rastmittel 9 des Halteelements 8 nicht in die, eine axiale Verschiebung hemmende, haltende Position bezüglich des Stegs 13 der Steuerhülse 6 gelangt.According to Fig. 5a and the offset by 90 ° cut Fig. 5b is moved directly from the locking position 7 in the direction of the
Nach Fig. 6a bzw. der um 90° versetzt geschnittenen Fig. 6b ist das Halteelement 8 als Kugel ausgebildet, welche durch eine diese umfänglich und axial sowie begrenzt radial beweglich führende Öffnung der Werkzeugaufnahme 1 in Kontakt mit dem Einspannbereich des Schaftes eines in die Werkzeugaufnahme eingeführten Werkzeugs 4 dient, wobei die radial nach aussen ragende Kalotte 15 der Kugel eine beidseitige Fase ausbildet, der eine radial federnde, radial innen beidseitig angefaste Hülsenfeder 16 axial beweglich zugeordnet ist, wobei die Hülsenfeder mit der Steuerungshülse 6 verbunden ist. Somit ist eine axiale Bewegung der in Freigabeposition 10 befindlichen Steuerungshülse 6 in Richtung Verriegelungsposition 7 gehemmt.According to Fig. 6a or offset by 90 ° cut Fig. 6b, the holding
Nach Fig. 7 ist bei Variante I das Halteelement 8 als axial auskargende, radial federnde Blattfeder ausgebildet, welche einen zumindest teilweise umfänglich umlaufenden Befestigungsteil 17, einen radial inneren Kontaktpunkt 18 zum Einspannbereich des Schaftes eines eingeführten Werkzeugs zur Steuerung der Steuerungshülse und ein radial äusseres Rastmittel 9 zum Halten der Steuerungshülse aufweist. Das am Halteelement 8 radial bewegliche Rastmittel 9 ist als abgewinkelte beidseitig angefaste Nase am Ende des axial auskargenden, radial federnden Teils der Blattfeder ausgebildet. Der radial auskargende Teil der Blattfeder ist in radialer Richtung umgefaltet ausgeführt.According to Fig. 7, the holding
Nach Fig. 8 ist bei Variante II die Steuerungshülse 6 mit der Haltefederhülse 16 verbunden, welche im Bereich des Eingriffs der Kalotte der Kugel zweiseitige Fasen 19 aufweist.According to Fig. 8, the
Claims (9)
- A tool holder for receiving a tool (4) which can be held with limited axial movement by way of finite radial recesses (3) formed along the axis of the tool, said tool holder having radially movable engaging elements (5), which engage with positive fit in said radial recesses (3) and can be released via a control sleeve (6) which is operated from the outside and is movable in axial direction against the initial tension of a locking spring (14), in which case, disposed between the control sleeve (6) and the clamping region of the shank of the tool (4) is a resilient holding element (8) and, in a release position (10), the resilient holding element (8), braced by the inserted tool (4), prevents the control sleeve (6) from moving over detent means (9) towards a locking position (7), characterized in that, after removal of the tool (4), the control sleeve (6) can move towards a locking position (7).
- A tool holder according to Claim 1, characterized in that the control sleeve (6), taking the form of a flange, is movable directly by hand in axial direction towards the hand tool apparatus.
- A tool holder according to Claim 2, characterized in that the control sleeve (6) has on the inside a web (13) which extends in radial direction to form a stop for a locking spring (14).
- A tool holder according to one of the preceding claims, characterized in that, by way of extensions (12) projecting outwards in radial direction, the locking elements (5) engage in recesses (11) in the control sleeve (6).
- A tool holder according to one of the preceding claims, characterized in that the resilient holding element (8) is designed in the form of a radially resilient leaf spring.
- A tool holder according to Claim 5, characterized in that, for control purposes, the resilient holding element (8) taking the form of a radially resilient leaf spring has a contact point (18) on the inside in radial direction for contact with the clamping region of the shank of the inserted tool (4), detent means (9) on the outside in radial direction for holding the control sleeve (6) and optionally a fastening portion (17) extending at least partly around the circumference.
- A tool holder according to Claim 6, characterized in that the detent means (9) is formed as an angled lug, chamfered on both sides and provided at the end of a radially resilient portion of the leaf spring which extends in axial direction and which optionally is folded over in radial direction.
- A tool holder according to one of the preceding claims, characterized in that the resilient holding element (8) is made in the form of a radially spring-mounted ball with a radially outward-projecting spherical cap or calotte (15).
- A tool holder according to Claim 8, characterized in that the retaining spring belonging to the resilient holding element (8) taking the form of a radially spring-mounted ball is associated with a radially resilient sleeve spring (16), optionally chamfered on both sides on the inside in radial direction, so as to be movable in axial direction, in which case optionally the sleeve spring (16) is connected to the control sleeve (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10026021 | 2000-05-25 | ||
DE10026021A DE10026021A1 (en) | 2000-05-25 | 2000-05-25 | Tool holder for a drill bit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1157790A1 EP1157790A1 (en) | 2001-11-28 |
EP1157790B1 true EP1157790B1 (en) | 2008-01-02 |
Family
ID=7643595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01810479A Expired - Lifetime EP1157790B1 (en) | 2000-05-25 | 2001-05-15 | Drill bit chuck |
Country Status (5)
Country | Link |
---|---|
US (1) | US6543789B2 (en) |
EP (1) | EP1157790B1 (en) |
JP (1) | JP4758565B2 (en) |
CN (1) | CN1189291C (en) |
DE (2) | DE10026021A1 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10043416A1 (en) * | 2000-09-04 | 2002-03-14 | Hilti Ag | Striking hand tool with tool holder |
DE10142729A1 (en) | 2001-08-31 | 2003-03-20 | Hilti Ag | Tool holder for striking hand tool device |
DE10207152B4 (en) * | 2002-02-20 | 2015-04-16 | Röhm Gmbh | drilling |
US7527272B2 (en) | 2002-09-18 | 2009-05-05 | Robert Bosch Gmbh | Chuck |
DE10243290B4 (en) * | 2002-09-18 | 2007-04-05 | Robert Bosch Gmbh | tool holder |
GB2394202A (en) * | 2002-10-18 | 2004-04-21 | Black & Decker Inc | Tool holder for impacting machine |
US7232008B2 (en) * | 2003-10-08 | 2007-06-19 | Pride Mobility Products Corporation | Active anti-tip wheels for power wheelchair |
DE102004042735A1 (en) * | 2004-09-03 | 2006-03-09 | Robert Bosch Gmbh | Tool holder, adapter and system with a tool holder and an adapter |
US7243923B2 (en) * | 2005-02-09 | 2007-07-17 | Black & Decker Inc. | Centering drill chuck |
EP1733849A1 (en) * | 2005-06-15 | 2006-12-20 | Caterpillar, Inc. | Tool assembly having a two part body |
EP1733851B1 (en) * | 2005-06-15 | 2013-01-02 | Caterpillar Inc. | Tool Retention Apparatus and Method |
DE102005000097A1 (en) * | 2005-07-28 | 2007-02-01 | Hilti Ag | Impact tool holder |
DE102005000168A1 (en) * | 2005-11-25 | 2007-05-31 | Hilti Ag | tool holder |
CN2858200Y (en) * | 2005-12-22 | 2007-01-17 | 特力实业有限公司 | Electromotion tool |
US8328477B2 (en) | 2006-03-02 | 2012-12-11 | Milwaukee Electric Tool Corporation | Cutting tool |
GB2483008B (en) * | 2006-03-02 | 2012-04-25 | Milwaukee Electric Tool Corp | Blade for a cutting tool |
US7810817B1 (en) | 2006-11-20 | 2010-10-12 | Bradshaw Medical, Inc. | Holder for replaceable tools |
CA2800778C (en) | 2009-06-01 | 2017-01-31 | Edward John Rohr, Jr. | Bi-directional quick change tool-less lever and wedge actuated collet chuck, system and/or method for using the same |
DE102009028890B4 (en) * | 2009-08-26 | 2014-11-20 | Hilti Aktiengesellschaft | tool holder |
DE102009057200A1 (en) * | 2009-11-26 | 2011-06-01 | C. & E. Fein Gmbh | Attachment for a machine tool |
US9662778B2 (en) | 2012-02-10 | 2017-05-30 | Milwaukee Electric Tool Corporation | Bit retention assembly for rotary hammer |
US9517510B2 (en) * | 2012-06-05 | 2016-12-13 | Robert Bosch Tool Corporation | Quick change power tool chuck |
WO2014121117A1 (en) | 2013-02-01 | 2014-08-07 | Milwaukee Electric Tool Corporation | Auger bit with replaceable cutting bit |
DE102019123995A1 (en) * | 2019-09-06 | 2021-03-11 | Drebo Werkzeugfabrik Gmbh | Suction bayonet |
DE102021203063A1 (en) * | 2021-03-26 | 2022-09-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool machine with a locking device |
DE102021203064A1 (en) * | 2021-03-26 | 2022-09-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool machine with a locking device |
US20220361934A1 (en) * | 2021-05-13 | 2022-11-17 | DePuy Synthes Products, Inc. | Surgical impacting tool interfaces |
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US3788658A (en) * | 1972-08-14 | 1974-01-29 | Erickson Tool Co | Instant change tool holder |
DE3506008A1 (en) * | 1985-02-21 | 1986-08-21 | Robert Bosch Gmbh, 7000 Stuttgart | TOOL HOLDER |
US5398946A (en) * | 1993-12-29 | 1995-03-21 | Poly-Tech Industries | Chuck having one-step lock and release |
DE4401663A1 (en) * | 1994-01-21 | 1995-07-27 | Bosch Gmbh Robert | Tool holder |
JP3423497B2 (en) * | 1995-09-06 | 2003-07-07 | 株式会社マキタ | Bit mounting device for portable tools |
DE19827172B4 (en) * | 1998-06-18 | 2006-11-09 | Robert Bosch Gmbh | Tool holders, in particular for drills or impact hammers |
DE19834503A1 (en) * | 1998-07-31 | 2000-02-03 | Hilti Ag | Tool holder for drilling and chiseling tools |
-
2000
- 2000-05-25 DE DE10026021A patent/DE10026021A1/en not_active Withdrawn
-
2001
- 2001-05-15 EP EP01810479A patent/EP1157790B1/en not_active Expired - Lifetime
- 2001-05-15 DE DE50113422T patent/DE50113422D1/en not_active Expired - Lifetime
- 2001-05-17 US US09/859,870 patent/US6543789B2/en not_active Expired - Lifetime
- 2001-05-21 CN CN01119529.0A patent/CN1189291C/en not_active Expired - Fee Related
- 2001-05-24 JP JP2001155296A patent/JP4758565B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2002011677A (en) | 2002-01-15 |
JP4758565B2 (en) | 2011-08-31 |
EP1157790A1 (en) | 2001-11-28 |
DE50113422D1 (en) | 2008-02-14 |
CN1189291C (en) | 2005-02-16 |
US20020067008A1 (en) | 2002-06-06 |
US6543789B2 (en) | 2003-04-08 |
DE10026021A1 (en) | 2001-11-29 |
CN1325783A (en) | 2001-12-12 |
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