EP1410879A1 - Automatic shaft lock - Google Patents
Automatic shaft lock Download PDFInfo
- Publication number
- EP1410879A1 EP1410879A1 EP02400043A EP02400043A EP1410879A1 EP 1410879 A1 EP1410879 A1 EP 1410879A1 EP 02400043 A EP02400043 A EP 02400043A EP 02400043 A EP02400043 A EP 02400043A EP 1410879 A1 EP1410879 A1 EP 1410879A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- spindle
- motor
- clamping
- clamping body
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
Definitions
- the invention relates to a motor-operated tool device, in particular drill or screwdriver, with a motor drive device, a spindle and a Carrying / locking device for the spindle, with a freely rotatable with respect to the spindle, of the Drive device drivable drive part, with at least a driving element with a power transmission area, and with a rotationally fixedly connected to the spindle output member, and with at least two clamping bodies and a housing-fixed Clamping surface, wherein at motor workedem drive a Torque transmission from the drive part via the Driving element on the output part and on the spindle takes place and with tool-side drive blocking the Spindle under clamping at least one clamping body between the output part and the housing-fixed clamping surface, with the engine-side drive, the rotational drive of Carrier element and driven part via the clamping body, by the driving element with its power transmission area detects the clamp body in the direction of rotation and this against a The contact area of the driven part presses.
- the entrainment / blocking device is achieved that upon engagement of the tool in a workpiece and simultaneously Failure of the power supply, for example, the tool device can be rotated with the tool, about the tool off withdraw the engagement position with the workpiece, without while torques from the outside on the drive device of the Tool device to be transferred.
- DE 199 42 271 A1 is a drive mechanism for a Power tool disclosed in which a switch socket is provided, which has a clutch with a spur gear in Contact stands.
- JP 05 269 677 and JP 05 269 676 are generic Spindle locking mechanisms disclosed.
- the drive of the Carrying elements take place via a carrier, which has axles communicates with gears of a planetary gear. This construction is very expensive.
- the driving element is arranged on a ring, the rotatably connected to the drive part is connectable. This makes possible compared to the one-piece design of drive part and Driving element a simplified production.
- the drive member is formed as a toothed wheel by a can be driven with this meshing drive pinion.
- the ring and / or the gear can, for example, as a casting, Sintered or be designed as a cold extruded part to to allow an economical production.
- For assembly is the ring with the driving element in a ring receptacle on or used in the gear.
- the ring holder can be attached to a Front side of the gear or as a depression or as Through opening to be formed in the gear. The Through opening allows mounting of the ring element of any end face.
- connection between ring and gear can force or be formed positively.
- the ring in one Pickup inserted in the gear a slight smaller diameter than the ring has to with this to form a press fit.
- the ring can be along his outer circumference also have a profile toothing, the in a corresponding toothing along the circumference of Ring holder engages the gear.
- the Investment area of the driven part with such trained Recess for receiving or conditioning of the clamp body provided that the clamping body when in the recess is taken up or against these, at least is slightly spaced from the housing-fixed clamping surface. This makes it possible for the clamping body with motor-side drive in a position to fix, in which he does not wear is subjected, but only statically charged.
- the clamp bodies are advantageously rotationally symmetrical designed and can, for example, as rollers or balls be educated.
- Driving elements it has proved to be particularly advantageous, several Driving elements, respective clamping body and the output part to provide respective investment areas. This can be a Imbalance can be reduced or avoided, and the too transmitting forces can be even in the spindle introduced or absorbed by the housing.
- At a preferred embodiment of the invention are three Driving elements, six clamping bodies and six contact areas provided on the stripping section, wherein the center lines of the Driving elements an angular distance of preferably 120 degrees exhibit.
- the clamp bodies have a preferred clamping distance of approx. 15 up to 45 degrees.
- Figure 1 shows a tool device 2 with a Drive device 4 with a drive pinion 6, which in a Drive part 8 engages in the form of a gear 10.
- the Drive part 8 is a driving / blocking device 12th connected to a spindle 14 on, for example by means of a chuck, a tool 16 is attached.
- the Carrying / blocking device 12 comprises, as in Figure 2 shown, the drive part 8 in the form of a gear 10, several driving elements 18, clamp body 20, one with the Spindle 14 rotatably connected output member 22 and a housing-fixed clamping surface 24, of a ring member 25th is formed.
- On the drive part 8 are the driving elements 18 rotatably provided with the drive part 8, the at motor-side drive with the clamping bodies 20 and the Stripping part 22 cooperate.
- the driving elements 18 are integrally formed with a ring 26, in turn rotatably connected to the drive part 8 is connected.
- the driving elements 18 act on motor-side drive the clamping body 20, which in the example designed as clamping rollers are.
- the power transmission takes place from the driving elements 18 via the clamping body 20 on the driven part 22.
- Das Stripping part 22 has radial projections 28, over the Forces on the output member 22 and on the spindle 14 and thus transferred to the tool 16.
- the clamp body 20 and the output member 22 are surrounded by the housing fixed Clamping surface 24.
- FIG. 3 shows the relative position of entrainment elements 18, Clamping elements 20 and driven part 22 with motor-side drive shown.
- Power transmission surfaces 30 are provided which are located in Contact position with the immediately following in the direction of rotation Clamping bodies 20 are located, which in turn in contact with Investment areas 32 of the output member 22 are.
- the Bearing areas 32 are on both sides of the radial projections 28 provided and as recesses for receiving the Clamping body 20 is formed.
- the recesses are through concave configuration to the outer contour of the clamping body 20th customized.
- the area between the radial projections 28 is to receive the driving elements 18 and the clamping body 20 reset so that a circumferentially extended Room 33 for the movement of the driving elements 18 and the Clamping body 20 is formed.
- the direction 34 of Power transmission surface 30 is with respect to a radial Direction 36 inclined ( Figure 3).
- the clamp body 20 pressed against the contact area 32 of the driven part 22 and while also slightly radially inward direction on the Spindle axis forced or held, so that the respective clamping body 20 of the housing-fixed clamping surface 24th at least slightly spaced.
- the housing fixed Clamping surface 24 is formed by the ring member 25, which by means of radial projections 38 with the housing of the Tool unit 2 is rotatably connected.
- the spindle 14 and the driven part 22nd the spindle 14 of the power tool 2 is blocked as shown in FIG Figure 4 is shown.
- the clamp body 20 are in a Blocking position between the output member 22 and the housing-fixed clamping surface 24 moves.
- the blocking will achieved in that as a result of the rotation of the spindle 14 and
- the drive part 22 of the respective radial projection 28 of the drive member 22 in the direction of rotation subsequent Clamping body 20 in a narrowed in the radial direction area the space 33 between the driven part 22 and the housing-fixed clamping surface 24 passes and clamps there and the further rotation blocked.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gripping On Spindles (AREA)
- Portable Power Tools In General (AREA)
Abstract
Description
Die Erfindung betrifft ein motorbetriebenes Werkzeuggerät, insbesondere Bohrmaschine oder Schrauber, mit einer motorischen Antriebsvorrichtung, einer Spindel und einer Mitnahme-/Blockiervorrichtung für die Spindel, mit einem bezüglich der Spindel frei drehbaren, von der Antriebsvorrichtung antreibbaren Antriebsteil, mit wenigstens einem Mitnahmeelement mit einem Kraftübertragungsbereich, und mit einem mit der Spindel drehfest verbundenen Abtriebsteil, sowie mit wenigstens zwei Klemmkörpern und einer gehäusefesten Klemmfläche, wobei bei motorseitigem Antrieb eine Drehmomentübertragung vom Antriebsteil über das Mitnahmeelement auf das Abtriebsteil und auf die Spindel erfolgt und bei werkzeugseitigem Antrieb eine Blockierung der Spindel unter Klemmung wenigstens eines Klemmkörpers zwischen dem Abtriebsteil und der gehäusefesten Klemmfläche erfolgt, wobei bei motorseitigem Antrieb die Drehmitnahme von Mitnahmeelement und Abtriebsteil über den Klemmkörper erfolgt, indem das Mitnahmeelement mit seinem Kraftübertragungsbereich den Klemmkörper in Drehrichtung erfasst und diesen gegen einen Anlagebereich des Abtriebsteils drückt.The invention relates to a motor-operated tool device, in particular drill or screwdriver, with a motor drive device, a spindle and a Carrying / locking device for the spindle, with a freely rotatable with respect to the spindle, of the Drive device drivable drive part, with at least a driving element with a power transmission area, and with a rotationally fixedly connected to the spindle output member, and with at least two clamping bodies and a housing-fixed Clamping surface, wherein at motorseitigem drive a Torque transmission from the drive part via the Driving element on the output part and on the spindle takes place and with tool-side drive blocking the Spindle under clamping at least one clamping body between the output part and the housing-fixed clamping surface, with the engine-side drive, the rotational drive of Carrier element and driven part via the clamping body, by the driving element with its power transmission area detects the clamp body in the direction of rotation and this against a The contact area of the driven part presses.
Durch die Mitnahme-/Blockiervorrichtung wird erreicht, dass bei Eingriff des Werkzeugs in ein Werkstück und gleichzeitigem Ausfall der Energieversorgung beispielsweise das Werkzeuggerät mit dem Werkzeug gedreht werden kann, etwa um das Werkzeug aus der Eingriffslage mit dem Werkstück zurückzuziehen, ohne dass dabei Drehmomente von Außen auf die Antriebsvorrichtung des Werkzeuggeräts übertragen werden.By the entrainment / blocking device is achieved that upon engagement of the tool in a workpiece and simultaneously Failure of the power supply, for example, the tool device can be rotated with the tool, about the tool off withdraw the engagement position with the workpiece, without while torques from the outside on the drive device of the Tool device to be transferred.
Aus der EP 0 982 101 A2 und der US 5,788,021 sind Werkzeuggeräte bekannt, deren Mitnahmeelemente geeignete erste Flächen zum Antrieb des Antriebsteils und hiervon getrennte zweite Flächen zur Entriegelung der Klemmkörper aufweisen. Diese Anordnung erweist sich im Hinblick auf die Vielzahl von zu fertigenden Wirkflächen der Mitnahmeelemente als nachteilig. From EP 0 982 101 A2 and US 5,788,021 are Tool devices known whose entrainment suitable first Areas for driving the drive part and separate therefrom having second surfaces for unlocking the clamping body. This arrangement proves in view of the variety of to be produced active surfaces of the driving elements as disadvantageous.
In der DE 199 42 271 A1 ist ein Antriebsmechanismus für ein Elektrowerkzeug offenbart, bei dem eine Schaltbuchse vorgesehen ist, die über eine Kupplung mit einem Stirnrad in Kontakt steht.In DE 199 42 271 A1 is a drive mechanism for a Power tool disclosed in which a switch socket is provided, which has a clutch with a spur gear in Contact stands.
In der JP 05 269 677 und in JP 05 269 676 sind gattungsgemäße Spindellockmechanismen offenbart. Der Antrieb der Mitnahmeelemente erfolgt über einen Träger, der über Achsen mit Zahnrädern eines Planetengetriebes in Verbindung steht. Diese Konstruktion ist sehr aufwendig.In JP 05 269 677 and JP 05 269 676 are generic Spindle locking mechanisms disclosed. The drive of the Carrying elements take place via a carrier, which has axles communicates with gears of a planetary gear. This construction is very expensive.
Hiervon ausgehend ist es Aufgabe der Erfindung, einen einfacheren konstruktiven Aufbau zu schaffen.On this basis, it is an object of the invention to provide a to create a simpler structural design.
Diese Aufgabe wird bei einem gattungsgemäßen Werkzeuggerät erfindungsgemäß dadurch gelöst, dass das Mitnahmeelement Bestandteil eines Rings ist, der drehfest mit dem als Zahnrad ausgebildeten Antriebsteil verbunden ist.This object is achieved in a generic tool device According to the invention solved in that the driving element Part of a ring that is non-rotatable with the gear trained drive part is connected.
Das Mitnahmeelement ist auf einem Ring angeordnet, der drehfest mit dem Antriebsteil verbindbar ist. Dies ermöglicht gegenüber der einstückigen Ausführung von Antriebsteil und Mitnahmeelement eine vereinfachte Herstellung.The driving element is arranged on a ring, the rotatably connected to the drive part is connectable. this makes possible compared to the one-piece design of drive part and Driving element a simplified production.
Das Antriebsteil ist als Zahnrad ausgebildet, das durch ein mit diesem kämmendes Antriebsritzel antreibbar ist. The drive member is formed as a toothed wheel by a can be driven with this meshing drive pinion.
Der Ring und/oder das Zahnrad können bspw. als Gussteil, Sinterteil oder als Kaltfließpressteil ausgebildet sein, um eine wirtschaftliche Herstellung zu ermöglichen. Zur Montage wird der Ring mit dem Mitnahmeelement in eine Ringaufnahme am oder im Zahnrad eingesetzt. Die Ringaufnahme kann an einer Stirnseite des Zahnrads oder als Vertiefung oder als Durchgangsöffnung im Zahnrad ausgebildet sein. Die Durchgangsöffnung ermöglicht eine Montage des Ringelements von einer beliebigen Stirnseite aus.The ring and / or the gear can, for example, as a casting, Sintered or be designed as a cold extruded part to to allow an economical production. For assembly is the ring with the driving element in a ring receptacle on or used in the gear. The ring holder can be attached to a Front side of the gear or as a depression or as Through opening to be formed in the gear. The Through opening allows mounting of the ring element of any end face.
Die Verbindung zwischen Ring und Zahnrad kann kraft- oder formschlüssig ausgebildet sein. Bspw. ist der Ring in eine Aufnahme im Zahnrad eingesetzt, die einen geringfügig kleineren Durchmesser als der Ring aufweist, um mit diesem eine Presspassung zu bilden. Der Ring kann entlang seines äußeren Umfangs auch eine Profilverzahnung aufweisen, die in eine entsprechende Verzahnung entlang des Umfangs der Ringaufnahme im Zahnrad eingreift.The connection between ring and gear can force or be formed positively. For example. is the ring in one Pickup inserted in the gear, a slight smaller diameter than the ring has to with this to form a press fit. The ring can be along his outer circumference also have a profile toothing, the in a corresponding toothing along the circumference of Ring holder engages the gear.
Es wäre denkbar, dass die Kraftübertragung vom Kraftübertragungsbereich des Mitnahmeelements über den Klemmkörper auf den Anlagebereich des Abtriebsteils genau in Umfangsrichtung erfolgt. Es erweist sich aber als besonders vorteilhaft, dass ein Kraftübertragungsbereich des Mitnahmeelements den Klemmkörper bei motorseitigem Antrieb geringfügig nach radial innen in Richtung auf die Spindelachse drückt und damit eine gegenüber der gehäusefesten Klemmfläche berührungslose Relativbewegung des Klemmkörpers ermöglicht.It is conceivable that the power transmission from Power transmission of the driving element over the Clamping body on the contact area of the driven part exactly in Circumferential direction takes place. It turns out to be special though advantageous that a power transmission of the Driving element the clamping body with motor-side drive slightly radially inward towards the spindle axis presses and thus one opposite the housing-fixed clamping surface Non-contact relative movement of the clamp body allows.
Auf diese Weise wird erreicht, dass eine Berührung mit oder eine Wälzbewegung auf der gehäusefesten Klemmfläche vermieden wird und somit der Verschleiß des Werkzeuggeräts reduziert wird gegenüber einem Werkzeuggerät aus EP 0 982 101 A2, bei dem sich die Klemmkörper bei motorseitigem Antrieb in einer in radialer Richtung unbestimmten Lage befinden, in der sie mit einer gehäusefesten Klemmfläche in Kontakt treten können und damit einem Verschleiß unterworfen sind.In this way it is achieved that a contact with or avoided a rolling motion on the housing-fixed clamping surface is and thus reduces the wear of the power tool is compared with a tool device from EP 0 982 101 A2, at the clamping body in motorseitigem drive in an in radial direction undetermined position in which they are with a housing-fixed clamping surface can come into contact and thus subject to wear.
Es erweist sich als besonders vorteilhaft, wenn der Kraftübertragungsbereich des Mitnahmeelements der vorliegenden Erfindung gegen die radiale Richtung geneigt ist und dadurch bewirkt, dass der Klemmkörper geringfügig nach radial innen gedrückt wird und somit von der gehäusefesten Klemmfläche beabstandet ist.It proves to be particularly advantageous if the Power transmission of the driving element of the present Invention is inclined against the radial direction and thereby causes the clamp body slightly radially inward is pressed and thus of the housing-fixed clamping surface is spaced.
Es hat sich des Weiteren als vorteilhaft herausgestellt, den Anlagebereich des Abtriebsteils mit einer derart ausgebildeten Ausnehmung zur Aufnahme oder Anlage des Klemmkörpers zu versehen, dass der Klemmkörper, wenn er in der Ausnehmung aufgenommen ist oder gegen diese anliegt, zumindest geringfügig von der gehäusefesten Klemmfläche beabstandet ist. Dies ermöglicht es, den Klemmkörper bei motorseitigem Antrieb in einer Lage zu fixieren, in der er keinem Verschleiß unterworfen ist, sondern lediglich statisch belastet wird.It has also proved to be advantageous, the Investment area of the driven part with such trained Recess for receiving or conditioning of the clamp body provided that the clamping body when in the recess is taken up or against these, at least is slightly spaced from the housing-fixed clamping surface. This makes it possible for the clamping body with motor-side drive in a position to fix, in which he does not wear is subjected, but only statically charged.
Die Klemmkörper sind vorteilhafter Weise rotationssymmetrisch ausgelegt und können beispielsweise als Rollen oder Kugeln ausgebildet sein.The clamp bodies are advantageously rotationally symmetrical designed and can, for example, as rollers or balls be educated.
Es hat sich als besonders vorteilhaft herausgestellt, mehrere Mitnahmeelemente, jeweilige Klemmkörper und am Abtriebsteil jeweilige Anlagebereiche vorzusehen. Hierdurch kann eine Unwucht verringert oder vermieden werden, und die zu übertragenden Kräfte können gleichmäßig in die Spindel eingeleitet oder vom Gehäuse aufgenommen werden. Bei einer bevorzugten Ausführungsform der Erfindung sind drei Mitnahmeelemente, sechs Klemmkörper und sechs Anlagebereiche am Abtriebsteil vorgesehen, bei der die Mittellinien der Mitnahmeelemente einen Winkelabstand von vorzugsweise 120 Grad aufweisen.It has proved to be particularly advantageous, several Driving elements, respective clamping body and the output part to provide respective investment areas. This can be a Imbalance can be reduced or avoided, and the too transmitting forces can be even in the spindle introduced or absorbed by the housing. At a preferred embodiment of the invention are three Driving elements, six clamping bodies and six contact areas provided on the stripping section, wherein the center lines of the Driving elements an angular distance of preferably 120 degrees exhibit.
Die Klemmkörper haben einen bevorzugten Klemmweg von ca. 15 bis 45 Grad.The clamp bodies have a preferred clamping distance of approx. 15 up to 45 degrees.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den beigefügten Patentansprüchen und aus der zeichnerischen Darstellung und nachfolgenden Beschreibung einer bevorzugten Ausführungsform der Erfindung. In der Zeichnung zeigt:
- Figur 1
- eine Schnittansicht durch ein Werkzeuggerät mit einer Mitnahme-/Blockiervorrichtung,
Figur 2- eine Explosionsdarstellung der Mitnahme/Blockiervorrichtung mit weiteren Bestandteilen des Werkzeuggeräts,
- Figur 3
- eine teilweise geschnittene Ansicht der Mitnahme/Blockiervorrichtung bei motorseitigem Antrieb und
- Figur 4
- eine Figur 3 entsprechende Ansicht der Mitnahme/Blockiervorrichtung in Blockierposition bei werkzeugseitigem Antrieb.
- FIG. 1
- a sectional view through a tool device with a entrainment / blocking device,
- FIG. 2
- an exploded view of the entrainment / blocking device with other components of the power tool,
- FIG. 3
- a partially sectioned view of the entrainment / blocking device with motor-side drive and
- FIG. 4
- a figure 3 corresponding view of the entrainment / blocking device in the blocking position with tool-side drive.
Figur 1 zeigt ein Werkzeuggerät 2 mit einer
Antriebsvorrichtung 4 mit einem Antriebsritzel 6, das in ein
Antriebsteil 8 in Form eines Zahnrads 10 eingreift. Das
Antriebsteil 8 ist über eine Mitnahme-/Blockiervorrichtung 12
mit einer Spindel 14 verbunden, auf der, beispielsweise
mittels eines Bohrfutters, ein Werkzeug 16 befestigt ist. Die
Mitnahme-/Blockiervorrichtung 12 umfasst, wie in Figur 2
dargestellt, das Antriebsteil 8 in Form eines Zahnrads 10,
mehrere Mitnahmeelemente 18, Klemmkörper 20, ein mit der
Spindel 14 drehfest verbundenes Abtriebsteil 22 und eine
gehäusefeste Klemmfläche 24, die von einem Ringbauteil 25
gebildet ist. Auf dem Antriebsteil 8 sind die Mitnahmeelemente
18 drehfest mit dem Antriebsteil 8 vorgesehen, die beim
motorseitigen Antrieb mit den Klemmkörpern 20 und dem
Abtriebsteil 22 zusammenwirken. Die Mitnahmeelemente 18 sind
einstückig mit einem Ring 26 ausgebildet, der seinerseits
drehfest mit dem Antriebsteil 8 verbunden ist.Figure 1 shows a
Die Mitnahmeelemente 18 wirken beim motorseitigem Antrieb auf
die Klemmkörper 20, die im Beispiel als Klemmrollen ausgeführt
sind. Die Kraftübertragung erfolgt von den Mitnahmeelementen
18 über die Klemmkörper 20 auf das Abtriebsteil 22. Das
Abtriebsteil 22 weist radiale Vorsprünge 28 auf, über die
Kräfte auf das Abtriebsteil 22 und auf die Spindel 14 und
somit auf das Werkzeug 16 übertragen werden. Die Klemmkörper
20 und das Abtriebsteil 22 sind umgeben von der gehäusefesten
Klemmfläche 24.The
In Figur 3 ist die relative Lage von Mitnahmeelementen 18,
Klemmkörpern 20 und Abtriebsteil 22 bei motorseitigem Antrieb
dargestellt. An den Mitnahmeelementen 18 sind
Kraftübertragungsflächen 30 vorgesehen, die sich in
Kontaktlage mit den in Drehrichtung unmittelbar folgenden
Klemmkörpern 20 befinden, die wiederum in Kontaktlage mit
Anlagebereichen 32 des Abtriebsteils 22 stehen. Die
Anlagebereiche 32 sind beidseitig an den radialen Vorsprüngen
28 vorgesehen und als Ausnehmungen zur Aufnahme der
Klemmkörper 20 ausgebildet. Die Ausnehmungen sind durch
konkave Ausgestaltung an die Außenkontur der Klemmkörper 20
angepasst. Der Bereich zwischen den radialen Vorsprüngen 28
ist zur Aufnahme der Mitnahmeelemente 18 und der Klemmkörper
20 zurückgesetzt, so dass ein in Umfangsrichtung erstreckter
Raum 33 für die Bewegung der Mitnahmeelemente 18 und der
Klemmkörper 20 gebildet ist. Die Richtung 34 der
Kraftübertragungsfläche 30 ist bezüglich einer radialen
Richtung 36 geneigt (Figur 3). Somit wird der Klemmkörper 20
gegen den Anlagebereich 32 des Abtriebsteils 22 gedrückt und
dabei auch geringfügig nach radial innen Richtung auf die
Spindelachse gezwungen bzw. festgehalten, so dass der
jeweilige Klemmkörper 20 von der gehäusefesten Klemmfläche 24
zumindest geringfügig beabstandet ist. Die gehäusefeste
Klemmfläche 24 ist von dem Ringbauteil 25 gebildet, welches
mit Hilfe radialer Vorsprünge 38 mit dem Gehäuse des
Werkzeugsgeräts 2 drehfest verbunden ist.FIG. 3 shows the relative position of
Bei werkzeugseitigem Antrieb durch Einleiten eines Drehmoments
in das Werkzeug 16, die Spindel 14 und das Abtriebsteil 22
wird die Spindel 14 des Werkzeuggeräts 2 blockiert, wie es in
Figur 4 dargestellt ist. Die Klemmkörper 20 werden in eine
Blockierlage zwischen dem Abtriebsteil 22 und der
gehäusefesten Klemmfläche 24 bewegt. Die Blockierung wird
dadurch erreicht, dass in Folge der Drehung der Spindel 14 und
damit des Antriebsteil 22 der jeweilige dem radialen Vorsprung
28 des Antriebsteil 22 in Drehrichtung nachfolgende
Klemmkörper 20 in einen in radialer Richtung verengten Bereich
des Raums 33 zwischen dem Abtriebsteil 22 und der
gehäusefesten Klemmfläche 24 gelangt und dort klemmt und die
weitere Drehung blockiert.For tool-side drive by introducing a torque
in the
Claims (6)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02400043A EP1410879B1 (en) | 2002-10-17 | 2002-10-17 | Automatic shaft lock |
AT02400043T ATE347467T1 (en) | 2002-10-17 | 2002-10-17 | AUTOMATIC SPINDLE LOCK |
DE50208905T DE50208905D1 (en) | 2002-10-17 | 2002-10-17 | Automatic spindle lock |
ES02400043T ES2277998T3 (en) | 2002-10-17 | 2002-10-17 | AUTOMATIC DRILL LOCK. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02400043A EP1410879B1 (en) | 2002-10-17 | 2002-10-17 | Automatic shaft lock |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1410879A1 true EP1410879A1 (en) | 2004-04-21 |
EP1410879B1 EP1410879B1 (en) | 2006-12-06 |
Family
ID=32039255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02400043A Expired - Lifetime EP1410879B1 (en) | 2002-10-17 | 2002-10-17 | Automatic shaft lock |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1410879B1 (en) |
AT (1) | ATE347467T1 (en) |
DE (1) | DE50208905D1 (en) |
ES (1) | ES2277998T3 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2420301A (en) * | 2004-11-18 | 2006-05-24 | Bosch Gmbh Robert | Driving and blocking device |
DE202009013116U1 (en) | 2009-09-29 | 2009-12-10 | Metabowerke Gmbh | Hand-guided tool device |
EP2221149A3 (en) * | 2009-02-23 | 2010-09-22 | Stanley Fastening Systems L.P. | Fastener driving device |
CN102947055A (en) * | 2010-03-08 | 2013-02-27 | 创科电动工具科技有限公司 | Power tool having a spindle lock |
WO2013164905A1 (en) * | 2012-04-30 | 2013-11-07 | Hitachi Koki Co., Ltd. | Power tool |
US11602795B2 (en) | 2020-01-08 | 2023-03-14 | Stanley Black & Decker, Inc. | Railroad track rail drill |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8075229B2 (en) | 2007-06-26 | 2011-12-13 | Techtronic Power Tools Technology Limited | Multi-speed drill and chuck assembly |
US8057134B2 (en) | 2007-06-26 | 2011-11-15 | Techtronic Power Tools Technology Limited | Chuck assembly |
TWI761749B (en) * | 2020-01-07 | 2022-04-21 | 劉冠廷 | Screwdriver structure |
Citations (2)
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JPH05269677A (en) * | 1992-03-26 | 1993-10-19 | Matsushita Electric Works Ltd | Rotary tool |
DE10003773A1 (en) * | 2000-01-28 | 2001-08-09 | Scintilla Ag | Hand-held machine tool, with locking device on drive shaft |
-
2002
- 2002-10-17 EP EP02400043A patent/EP1410879B1/en not_active Expired - Lifetime
- 2002-10-17 ES ES02400043T patent/ES2277998T3/en not_active Expired - Lifetime
- 2002-10-17 DE DE50208905T patent/DE50208905D1/en not_active Expired - Lifetime
- 2002-10-17 AT AT02400043T patent/ATE347467T1/en not_active IP Right Cessation
Patent Citations (2)
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JPH05269677A (en) * | 1992-03-26 | 1993-10-19 | Matsushita Electric Works Ltd | Rotary tool |
DE10003773A1 (en) * | 2000-01-28 | 2001-08-09 | Scintilla Ag | Hand-held machine tool, with locking device on drive shaft |
Non-Patent Citations (1)
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PATENT ABSTRACTS OF JAPAN vol. 018, no. 037 (M - 1545) 20 January 1994 (1994-01-20) * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2420301A (en) * | 2004-11-18 | 2006-05-24 | Bosch Gmbh Robert | Driving and blocking device |
GB2420301B (en) * | 2004-11-18 | 2007-05-30 | Bosch Gmbh Robert | Driving- and blocking device |
US7287602B2 (en) | 2004-11-18 | 2007-10-30 | Robert Bosch Gmbh | Spindle lock for rotary power tool |
EP2221149A3 (en) * | 2009-02-23 | 2010-09-22 | Stanley Fastening Systems L.P. | Fastener driving device |
DE202009013116U1 (en) | 2009-09-29 | 2009-12-10 | Metabowerke Gmbh | Hand-guided tool device |
CN102947055A (en) * | 2010-03-08 | 2013-02-27 | 创科电动工具科技有限公司 | Power tool having a spindle lock |
CN102947055B (en) * | 2010-03-08 | 2014-10-22 | 创科电动工具科技有限公司 | Power tool having a spindle lock |
US9174328B2 (en) | 2010-03-08 | 2015-11-03 | Techtronic Power Tools Technology Limited | Power tool having a spindle lock |
WO2013164905A1 (en) * | 2012-04-30 | 2013-11-07 | Hitachi Koki Co., Ltd. | Power tool |
US10377022B2 (en) | 2012-04-30 | 2019-08-13 | Koki Holdings Co., Ltd. | Power tool anvil lock mechanism |
US11602795B2 (en) | 2020-01-08 | 2023-03-14 | Stanley Black & Decker, Inc. | Railroad track rail drill |
Also Published As
Publication number | Publication date |
---|---|
ATE347467T1 (en) | 2006-12-15 |
DE50208905D1 (en) | 2007-01-18 |
EP1410879B1 (en) | 2006-12-06 |
ES2277998T3 (en) | 2007-08-01 |
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