EP2210709B1 - Support base for power screwdrivers - Google Patents
Support base for power screwdrivers Download PDFInfo
- Publication number
- EP2210709B1 EP2210709B1 EP20100000143 EP10000143A EP2210709B1 EP 2210709 B1 EP2210709 B1 EP 2210709B1 EP 20100000143 EP20100000143 EP 20100000143 EP 10000143 A EP10000143 A EP 10000143A EP 2210709 B1 EP2210709 B1 EP 2210709B1
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- EP
- European Patent Office
- Prior art keywords
- support base
- tooth
- locking
- housing
- locking device
- 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.)
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- 238000006243 chemical reaction Methods 0.000 claims description 6
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- 229910000831 Steel Inorganic materials 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
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- 229920003023 plastic Polymers 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 5
- 229920001875 Ebonite Polymers 0.000 description 3
- 230000004323 axial length Effects 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0078—Reaction arms
Definitions
- the invention relates to a support foot for a power screwdriver for deriving the resulting from screws reaction force according to the preamble of claim 1.
- Stützfuß is from the DE 203 01 759 U1 known.
- a support leg is arranged on the housing, which can be brought into abutment against a stationary abutment in order to derive the reaction force arising during the screwing.
- the support foot has, for example, a ring with a locking device, for example in the form of an internal toothing, which can be pushed onto a housing of the power wrench in different rotational positions and is held there in a rotationally fixed position.
- the ring having the internal teeth has an axial length which is slightly shorter than the axial length of the external toothing on the housing of the power wrench, so as to enable a height compensation of the support leg on the housing and thus an adaptation to structural conditions and in particular to a to allow stationary abutment.
- a power wrench with a housing which includes a drive device for an output shaft and a support leg for deriving the reaction force resulting from the screw, wherein the support leg engages with a toothing of the housing and can be pushed in different rotational positions on the toothing.
- a blocking device is provided which allows a limited displacement of the support leg on the housing and blocks the removal of the support leg from the housing, wherein the support leg is displaceable in the region of limited displacement between an engagement position and an idle position.
- the invention is therefore based on the object to provide a support foot for a power screwdriver, which is designed so that it is displaceable in the longitudinal direction of the housing to a large extent and at the same time in a defined manner both in the axial direction and in the rotational direction on the Housing of the power wrench is fixable.
- a support foot for power screwdrivers with the features of claim 1.
- the basic idea of the invention is to provide a support leg which is not only displaceable along the longitudinal direction of the housing to a great extent and can not be locked in any rotational position by the locking device is, but also in any position along the axial direction in a simple and easy to handle manner can be fixed.
- the locking device arranged on the support has a fixing device which is operable so that the support leg in the unfixed state in the axial direction and displaceable in the fixed state at an arbitrary position of the arranged on the housing of the power screw locking device is fixed.
- an advantageous embodiment provides that the arresting device arranged on the support foot is an internal toothing arranged in a ring, which engages in an external toothing arranged on the housing of the power screwdriver.
- Such interlocking gears allow for a selectable in small angular increments rotatable locking, on the other hand, they also allow a high torque absorption.
- a very advantageous embodiment of the fixing device comprises a locking or fixing element arranged in a tooth of the internal toothing, which is mounted radially displaceable by actuating an actuating device in the radial direction of the ring and can be fixed in at least one position.
- the locking element is partly over the tooth flanks of the tooth and thus allows a fixation of the internal toothing of the support leg on the outer toothing of the housing by a clamping effect formed thereby.
- the locking element may be formed by a ball.
- the ball is preferably made of a metal, in particular steel, aluminum, titanium or alloys of these metals, it may also consist of rubber, in particular hard rubber or a comparable material.
- the actuator preferably has a displaceable in the axial direction of the hollow shaft, spring-biased actuating pin, which has a backdrop in the longitudinal direction, and thus also in the direction of rotation of the power wrench, such that the ball in the non-actuated state over the tooth flanks of the tooth and in the actuated state slides back behind the tooth flanks of the tooth.
- spring-biased actuating pin which has a backdrop in the longitudinal direction, and thus also in the direction of rotation of the power wrench, such that the ball in the non-actuated state over the tooth flanks of the tooth and in the actuated state slides back behind the tooth flanks of the tooth.
- the actuating pin is preferably manually operable, wherein it is arranged so that an operator simultaneously upon actuation, ie depression of the actuating pin makes an axial displacement of the support foot on the power wrench housing and releasing the spring-biased actuating pin immediate and immediate onset of the support foot on the power wrench triggers.
- Another embodiment provides as a locking element before at least one positive and non-positive tooth that protrudes in its "fixing" at least partially in the radial direction and / or in the circumferential direction over the tooth flanks of the teeth of the internal teeth and is radially displaceable.
- This tooth preferably also consists of a metal, in particular steel, aluminum, titanium or an alloy of metals or of rubber, in particular hard rubber or a comparable material.
- the tooth is displaceable in the longitudinal direction according to a preferred embodiment, wherein an actuating device can be provided here, due to the operation of the displacement in the longitudinal direction is made possible.
- a support foot 100 for a power screwdriver (not shown) comprises at its angled lower end a stop 110, with which it is brought to a stationary (not shown) abutment to plant, to derive the reaction force resulting from the screws.
- the support foot has a ring 120, in the interior of which an internal toothing 130 is arranged.
- the internal toothing 130 engages in an external toothing arranged on a housing of the power wrench (not shown).
- the ring 120 has a smaller height and thus smaller axial length than the external toothing on the power screwdriver, in order to rotate the support not only due to the teeth in different rotational positions, but in particular to adjust height adjustable to different structural conditions. Only by this adjustment is an optimal derivation of the resulting from screws Reaction force to an abutment possible.
- the support foot 100 is - in other words - in terms of its rotational position and in terms of its axial position, that is adjusted in height so that the stop 110 when tightening the screw or an opposing stop 110 'when loosening the screw optimally abut the abutment.
- a fixing device 200 described in more detail below is provided which comprises a fixing element in the form of a ball 205 and an actuating pin 210.
- a spring 220 in an initial position in which the ball 205 protrudes over a tooth flank, biased (see Fig. 1 ).
- the support leg 100 is held on the power wrench in a defined axial position.
- an operator depresses the actuating pin 210, causing compression of the spring 220.
- the ball 205 runs on a arranged on the outer peripheral surface of the actuating pin 210 gate 240 and moves in this way in Fig. 2 and Fig. 3 to the left, that is, out of the tooth flank.
- the ball 205 is guided in a bore 206 extending in the ring 120.
- the spring-biased actuating pin 210 thus represents an actuating device of the fixing device 200, such that the ball 205 in the non-actuated state of the actuating pin 210 over the tooth flanks of the tooth in which it is located, and in the actuated state slides back behind the tooth flanks of the tooth.
- the ball 205 stands over both the tooth limiting tooth flanks over.
- the ball 205 not in one To arrange tooth, but in the space between two teeth on the tooth base, such that it protrudes slightly above the tooth base in the fixed state and in the non-fixed state springs back behind the tooth base. This also makes it possible to fix the support foot 100 to the housing of the power wrench.
- FIG. 4 to Fig. 6 A further embodiment of a support foot making use of the invention will be described, wherein like elements with the same reference numerals as in FIGS FIGS. 1 to 3 are referred to, so with respect to their description to the above reference is made.
- a fixing in the form of a positive and non-positive tooth 305 for example, plastic, rubber, especially hard rubber, or a comparable material or a metal, such as steel, a non-ferrous metal, such as aluminum, titanium, or a Metal alloy exists.
- this tooth 305 is radially displaceable by a (not shown) actuating element according to the above.
- the positive and non-positive tooth 305 projects laterally beyond the tooth flanks of the remaining teeth of the internal toothing 130. It can be moved so that it springs back behind the tooth flanks of the internal teeth 130 and thus enables release of the support leg on the corresponding external toothing. Instead of just one tooth, several teeth can be provided.
Description
Die Erfindung betrifft einen Stützfuß für einen Kraftschrauber zum Ableiten der beim Schrauben entstehendend Reaktionskraft nach dem Oberbegriff des Anspruchs 1. Ein solcher Stützfuß ist aus der
Bekannt sind manuelle, hydraulische, pneumatische oder elektrische Kraftschrauber zum Drehen von Schrauben. Bei derartigen Kraftschraubern ist am Gehäuse ein Stützfuß angeordnet, der in Anlage an ein ortsfestes Widerlager gebracht werden kann, um die beim Schrauben entstehende Reaktionskraft abzuleiten. Der Stützfuß weist beispielsweise einen Ring mit einer Arretiereinrichtung, beispielsweise in Form einer Innenverzahnung auf, die auf eine am Gehäuse angeordnete Verzahnung des Kraftschraubers in unterschiedlichen Drehpositionen aufschiebbar ist und dort in einer drehfesten Position gehalten wird. Der die Innenverzahnung aufweisende Ring weist dabei eine axiale Länge auf, die etwas kürzer ausgebildet ist als die axiale Länge der Außenverzahnung am Gehäuse des Kraftschraubers, um so einen Höhenausgleich des Stützfußes an dem Gehäuse zu ermöglichen und hiermit eine Anpassung an bauliche Gegebenheiten und insbesondere an ein ortsfestes Widerlager zu ermöglichen.Are known manual, hydraulic, pneumatic or electric power screwdriver for turning screws. In such power wrenches, a support leg is arranged on the housing, which can be brought into abutment against a stationary abutment in order to derive the reaction force arising during the screwing. The support foot has, for example, a ring with a locking device, for example in the form of an internal toothing, which can be pushed onto a housing of the power wrench in different rotational positions and is held there in a rotationally fixed position. The ring having the internal teeth has an axial length which is slightly shorter than the axial length of the external toothing on the housing of the power wrench, so as to enable a height compensation of the support leg on the housing and thus an adaptation to structural conditions and in particular to a to allow stationary abutment.
Aus der
Aus der
Bei diesem Kraftschrauber ist eine Blockiervorrichtung erforderlich, um das Abziehen des Stützfußes vom Gehäuse zu blockieren. Zwar ist eine begrenzte Verschiebung des Stützfußes in Axialrichtung möglich, diese Verschiebung ist jedoch nur geringfügig, sodass eine Anpassung an verschiedene bauliche Gegebenheiten in vielen Fällen nicht möglich ist.In this power wrench a blocking device is required to block the removal of the support leg from the housing. Although a limited displacement of the support leg in the axial direction is possible, but this shift is only slightly, so that adaptation to different structural conditions in many cases is not possible.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Stützfuß für einen Kraftschrauber zu vermitteln, welcher so ausgebildet ist, dass er in Längsrichtung des Gehäuses in weitem Umfang verschiebbar ist und gleichzeitig auf einfache Weise in einer sowohl in Axialrichtung als auch in Drehrichtung definierten Position an dem Gehäuse des Kraftschraubers fixierbar ist.The invention is therefore based on the object to provide a support foot for a power screwdriver, which is designed so that it is displaceable in the longitudinal direction of the housing to a large extent and at the same time in a defined manner both in the axial direction and in the rotational direction on the Housing of the power wrench is fixable.
Diese Aufgabe wird gelöst durch einen Stützfuß für Kraftschrauber mit den Merkmalen des Anspruchs 1. Grundidee der Erfindung ist es, einen Stützfuß bereitzustellen, der nicht nur in weitem Umfang entlang der Längsrichtung des Gehäuses verschiebbar ist und dabei nicht nur in beliebigen Drehpositionen durch die Arretiereinrichtung arretierbar ist, sondern auch in beliebigen Positionen entlang der Axialrichtung auf einfache und einfach handhabbare Weise fixierbar ist. Dies wird dadurch erreicht, dass die an dem Stützfuß angeordnete Arretiereinrichtung eine Fixiereinrichtung aufweist, die so betätigbar ist, dass der Stützfuß im nicht fixierten Zustand in Axialrichtung verschieblich und im fixierten Zustand an einer beliebigen Stelle der an dem Gehäuse des Kraftschraubers angeordneten Arretiereinrichtung fixierbar ist.This object is achieved by a support foot for power screwdrivers with the features of claim 1. The basic idea of the invention is to provide a support leg which is not only displaceable along the longitudinal direction of the housing to a great extent and can not be locked in any rotational position by the locking device is, but also in any position along the axial direction in a simple and easy to handle manner can be fixed. This is achieved in that the locking device arranged on the support has a fixing device which is operable so that the support leg in the unfixed state in the axial direction and displaceable in the fixed state at an arbitrary position of the arranged on the housing of the power screw locking device is fixed.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des in dem unabhängigen Anspruch angegebenen Stützfußes möglich.The measures listed in the dependent claims advantageous refinements and improvements of the supportive foot specified in the independent claim are possible.
So sieht eine vorteilhafte Ausgestaltung vor, dass die an dem Stützfuß angeordnete Arretiereinrichtung eine in einem Ring angeordnete Innenverzahnung ist, die in eine am Gehäuse des Kraftschraubers angeordnete Außenverzahnung eingreift. Solche ineinandergreifende Verzahnungen erlauben zum einen eine in kleinen Winkelschritten wählbare drehfeste Arretierung, zum anderen ermöglichen sie gleichzeitig eine hohe Drehmomentaufnahme.Thus, an advantageous embodiment provides that the arresting device arranged on the support foot is an internal toothing arranged in a ring, which engages in an external toothing arranged on the housing of the power screwdriver. Such interlocking gears allow for a selectable in small angular increments rotatable locking, on the other hand, they also allow a high torque absorption.
Eine sehr vorteilhafte Ausgestaltung der Fixiereinrichtung umfasst ein in einem Zahn der Innenverzahnung angeordnetes Feststell- oder Fixierelement, das durch Betätigen einer Betätigungseinrichtung in Radialrichtung des Rings radial verschieblich gelagert ist und in wenigstens einer Position fixierbar ist. In dieser Position steht das Feststellelement teilweise über die Zahnflanken des Zahnes über und ermöglicht so eine Fixierung der Innenverzahnung des Stützfußes an der Außenverzahnung des Gehäuses durch eine dadurch ausgebildete Klemmwirkung.A very advantageous embodiment of the fixing device comprises a locking or fixing element arranged in a tooth of the internal toothing, which is mounted radially displaceable by actuating an actuating device in the radial direction of the ring and can be fixed in at least one position. In this position, the locking element is partly over the tooth flanks of the tooth and thus allows a fixation of the internal toothing of the support leg on the outer toothing of the housing by a clamping effect formed thereby.
Das Feststellelement kann durch eine Kugel gebildet sein. Die Kugel besteht bevorzugt aus einem Metall, insbesondere Stahl, Aluminium, Titan oder Legierungen dieser Metalle, sie kann auch aus Gummi, insbesondere Hartgummi oder einem vergleichbaren Material bestehen.The locking element may be formed by a ball. The ball is preferably made of a metal, in particular steel, aluminum, titanium or alloys of these metals, it may also consist of rubber, in particular hard rubber or a comparable material.
Die Betätigungseinrichtung weist vorzugsweise einen in Axialrichtung der Hohlwelle verschieblichen, federvorgespannt niedergedrückten Betätigungsstift auf, der in Längsrichtung, und damit auch in Drehrichtung des Kraftschraubers eine Kulisse aufweist, derart, dass die Kugel im nicht betätigten Zustand über die Zahnflanken des Zahns übersteht und im betätigten Zustand hinter die Zahnflanken des Zahns zurückgleitet. Hierdurch kann zwischen der fixierten und der nicht fixierten Position des Stützfußes an dem Kraftschrauber durch Betätigen des Betätigungsstifts in Form von Niederdrücken beliebig gewählt werden.The actuator preferably has a displaceable in the axial direction of the hollow shaft, spring-biased actuating pin, which has a backdrop in the longitudinal direction, and thus also in the direction of rotation of the power wrench, such that the ball in the non-actuated state over the tooth flanks of the tooth and in the actuated state slides back behind the tooth flanks of the tooth. In this way, can be arbitrarily selected between the fixed and the unfixed position of the support foot on the power screwdriver by pressing the actuating pin in the form of depressions.
Der Betätigungsstift ist dabei bevorzugt manuell betätigbar, wobei er so angeordnet ist, dass eine Bedienungsperson bei Betätigen, also Niederdrücken des Betätigungsstiftes gleichzeitig eine Axialverschiebung des Stützfußes an dem Kraftschraubergehäuse vornimmt und durch Loslassen des federvorgespannten Betätigungsstiftes eine unmittelbare und sofort einsetzende Arretierung des Stützfußes an dem Kraftschrauber auslöst.The actuating pin is preferably manually operable, wherein it is arranged so that an operator simultaneously upon actuation, ie depression of the actuating pin makes an axial displacement of the support foot on the power wrench housing and releasing the spring-biased actuating pin immediate and immediate onset of the support foot on the power wrench triggers.
Eine andere Ausgestaltung sieht als Feststellelement mindestens einen form- und kraftschlüssigen Zahn vor, der in seiner "Fixierposition" wenigstens teilweise in Radialrichtung und/oder in Umfangsrichtung über die Zahnflanken der Zähne der Innenverzahnung übersteht und radial verschieblich ist. Dieser Zahn besteht vorzugsweise ebenfalls aus einem Metall, insbesondere Stahl, Aluminium, Titan oder einer Legierung von Metallen oder aus Gummi, insbesondere Hartgummi oder einem vergleichbaren Material.Another embodiment provides as a locking element before at least one positive and non-positive tooth that protrudes in its "fixing" at least partially in the radial direction and / or in the circumferential direction over the tooth flanks of the teeth of the internal teeth and is radially displaceable. This tooth preferably also consists of a metal, in particular steel, aluminum, titanium or an alloy of metals or of rubber, in particular hard rubber or a comparable material.
Der Zahn ist gemäß einer bevorzugten Ausführungsform in Längsrichtung verschieblich, wobei hier eine Betätigungseinrichtung vorgesehen sein kann, aufgrund deren Betätigung die Verschiebung in Längsrichtung ermöglicht wird.The tooth is displaceable in the longitudinal direction according to a preferred embodiment, wherein an actuating device can be provided here, due to the operation of the displacement in the longitudinal direction is made possible.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert.Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description.
Es zeigen:
- Fig. 1
- eine isometrische Ansicht einer ersten Ausführungsform eines von der Erfindung Gebrauch machenden Stützfußes;
- Fig. 2
- eine Schnittansicht des Stützfußes in
Fig. 1 ; - Fig. 3
- eine Ausschnittvergrößerung der Schnittansicht gemäß
Fig. 2 ; - Fig. 4
- eine isometrische Ansicht einer weiteren Ausführungsform eines von der Erfindung Gebrauch machenden Stützfußes;
- Fig. 5
- eine Draufsicht auf den in
Fig. 4 dargestellten Stützfuß und - Fig. 6
- eine teilweise geschnittene Seitenansicht des in
Fig. 4 undFig. 5 dargestellten Stützfußes.
- Fig. 1
- an isometric view of a first embodiment of a make use of the invention support leg;
- Fig. 2
- a sectional view of the support foot in
Fig. 1 ; - Fig. 3
- a detail enlargement of the sectional view according to
Fig. 2 ; - Fig. 4
- an isometric view of a further embodiment of a support foot making use of the invention;
- Fig. 5
- a top view of the in
Fig. 4 illustrated support foot and - Fig. 6
- a partially sectioned side view of the in
Fig. 4 andFig. 5 illustrated support foot.
Ein Stützfuß 100 für einen (nicht dargestellten) Kraftschrauber umfasst an seinem abgewinkelten unteren Ende einen Anschlag 110, mit dem er an ein ortsfestes (nicht dargestelltes) Widerlager zu Anlage gebracht wird, um die beim Schrauben entstehende Reaktionskraft abzuleiten.A
Im oberen Bereich weist der Stützfuß einen Ring 120 auf, in dessen Innerem eine Innenverzahnung 130 angeordnet ist. Die Innenverzahnung 130 greift in eine an einem Gehäuse des Kraftschraubers angeordnete Außenverzahnung ein (nicht dargestellt). Dabei weist der Ring 120 eine geringere Höhe und damit kleinere axiale Länge auf als die Außenverzahnung am Kraftschrauber, um den Stützfuß nicht nur aufgrund der Verzahnung in verschiedenen Drehpositionen drehfest, sondern insbesondere auch höhenverschiebbar an verschiedene bauliche Gegebenheiten anpassen zu können. Nur durch diese Anpassung ist eine optimale Ableitung der beim Schrauben entstehenden Reaktionskraft an ein Widerlager möglich. Der Stützfuß 100 wird - anders ausgedrückt - hinsichtlich seiner Drehposition und hinsichtlich seiner Axialposition, das heißt hinsichtlich seiner Höhe so verstellt, dass der Anschlag 110 beim Festziehen der Schraube oder ein diesem gegenüberliegender Anschlag 110' beim Lösen der Schraube optimal am Widerlager anliegen.In the upper area, the support foot has a
Um nun den Stützfuß in Axialrichtung verschieben zu können und gleichzeitig an einer gewünschten Position fixieren zu können, ist in dem Ring 120 des Stützfußes eine nachfolgend noch näher beschriebene Fixiereinrichtung 200 vorgesehen, die ein Fixierelement in Form einer Kugel 205 und einen Betätigungsstift 210 umfasst.In order to be able to move the support leg in the axial direction and at the same time be able to fix at a desired position, in the
Wie in
Der federvorgespannte Betätigungsstift 210 stellt also eine Betätigungseinrichtung der Fixiereinrichtung 200 dar, derart, dass die Kugel 205 im nicht betätigten Zustand des Betätigungsstiftes 210 über die Zahnflanken des Zahns, in dem sie angeordnet ist, übersteht und im betätigten Zustand hinter die Zahnflanken des Zahns zurückgleitet. Die Kugel 205 steht dabei über beide den Zahn begrenzenden Zahnflanken über. An dieser Stelle ist zu bemerken, dass es rein prinzipiell auch möglich wäre, die Kugel 205 nicht in einem Zahn, sondern in dem Zwischenraum zwischen zwei Zähnen am Zahngrund anzuordnen, derart, dass sie im fixierten Zustand geringfügig über den Zahngrund übersteht und im nicht fixierten Zustand hinter den Zahngrund zurückspringt. Auch hierdurch wäre eine Fixierung des Stützfußes 100 an dem Gehäuse des Kraftschraubers möglich. Versuche haben jedoch gezeigt, dass die Anordnung der Kugel 205 in dem Zahn und das Vorspringen der Kugel 205 über die Zahnflanken im fixierten Zustand und das Zurückspringen der Kugel 205 hinter die Zahnflanken im nicht fixierten Zustand eine besonders optimale Fixierung des Stützfußes 100 an dem Kraftschrauber ermöglichen.The spring-biased
In Verbindung mit
Claims (9)
- A support base (100) for power screwdrivers in order to deflect the occurring reaction force during screwing comprising a locking device (130) arranged at the support base (100), which interacts with a locking device being arranged at a housing of the power screwdriver in that the support base (100) is fixable in a torque proof way but at the same time is movable in an axial direction, characterized in that the locking device (130) being arranged at the support base (100) has a fixing device (200), which is operable in that the supporting base (100) in the not fixed state is movable in an axial direction and in the fixed state is fixable at an desirable position on the locking device being arranged on the housing of the power screwdriver.
- The support base (100) according to claim 1, characterized in that the locking device arranged on the support base (100) is an internal gear tooth system (130) being arranged in a ring (120) and meshing with an external gear tooth system arranged on the housing of the power screwdriver.
- The support base (100) according to claim 2, characterized in that the fixing device comprises a fixing element being arranged in or on a tooth of the internal gear tooth system (130) and which is supported radially movable in radial direction of the ring (120) and is fixable at an desirable position.
- The support base (100) according to claim 3, characterized in that the fixing element is a sphere (205).
- The support base (100) according to claim 4, characterized in that the sphere consists of the following materials: stainless steel, non-ferrous metal, plastics.
- The support base (100) according to one of the claims 3 to 5, characterized in that an operating device is provided comprising a spring-loaded actuating pin (210) being movable in the axial direction of the ring (120) and having a connecting-link (240) in that the sphere in the non actuated state overlaps the tooth flanks laterally and in the actuated state slides back behind the tooth flanks of the tooth.
- The support base (100) according to claim 3, characterized in that the fixing element is at least a form-locking and force-locking tooth.
- The support base (100) according to claim 6, characterized in that the tooth (305) consists of one of the materials: plastics, rubber, metal, in particular steel, aluminium, titan or an alloy of these metals.
- The support base (100) according to claim 7 or 8, characterized in that the form-locking and force-locking tooth is radially movable in that it overlaps the teeth of the internal gear tooth system (130) in its fixing position in radial direction and/or the direction of the tooth flanks and goes back behind the tooth flanks of the teeth of the internal gear tooth system (130) in its not fixed position along the radial direction and/or the rotary direction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910005997 DE102009005997A1 (en) | 2009-01-23 | 2009-01-23 | Support foot for power screwdrivers |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2210709A2 EP2210709A2 (en) | 2010-07-28 |
EP2210709A3 EP2210709A3 (en) | 2012-10-10 |
EP2210709B1 true EP2210709B1 (en) | 2013-10-23 |
Family
ID=42144777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100000143 Active EP2210709B1 (en) | 2009-01-23 | 2010-01-11 | Support base for power screwdrivers |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2210709B1 (en) |
DE (1) | DE102009005997A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104175271A (en) * | 2014-08-17 | 2014-12-03 | 中国北车集团大同电力机车有限责任公司 | Pneumatic torque wrench counterforce arm |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103846853A (en) * | 2012-11-28 | 2014-06-11 | 江苏金立电子机械科技有限公司 | Reaction force arm for fixed torque wrench |
CN105283272B (en) * | 2013-04-24 | 2018-04-27 | 凯特克分部尤尼克斯公司 | Equipment for tightening threaded fastener |
DE202013004157U1 (en) | 2013-05-06 | 2013-06-24 | LÖSOMAT-Schraubtechnik Neef GmbH | Device for axial locking of toothed elements |
DE102017105025A1 (en) | 2017-03-09 | 2018-09-13 | Frank Hohmann | Arrangement of a reaction moments dissipating support arm and a screwdriver |
JP6956961B2 (en) * | 2018-01-29 | 2021-11-02 | 鹿島建設株式会社 | Nut runner for fastening lining plate and method of fastening lining plate using it |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794825A (en) * | 1986-11-03 | 1989-01-03 | Atlantic-Caribbean Products, Inc. | Hydraulic power wrench |
DE10043952A1 (en) * | 2000-09-06 | 2002-04-04 | Bobby Hu | Ratchet tool with angular adjustable head has hand grip with bores, locking pin, press stud, and tensioning device for angular head adjustment |
DE20016612U1 (en) * | 2000-09-22 | 2002-02-14 | Beyert Thomas | Variable support system with several rotatable axes for screwing devices |
TWI242483B (en) * | 2002-10-25 | 2005-11-01 | Hou-Fei Hu | Fastener-driving tool assembly |
DE20301759U1 (en) | 2003-02-05 | 2004-06-17 | Wagner, Paul-Heinz | power wrench |
-
2009
- 2009-01-23 DE DE200910005997 patent/DE102009005997A1/en not_active Withdrawn
-
2010
- 2010-01-11 EP EP20100000143 patent/EP2210709B1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104175271A (en) * | 2014-08-17 | 2014-12-03 | 中国北车集团大同电力机车有限责任公司 | Pneumatic torque wrench counterforce arm |
Also Published As
Publication number | Publication date |
---|---|
EP2210709A2 (en) | 2010-07-28 |
EP2210709A3 (en) | 2012-10-10 |
DE102009005997A1 (en) | 2010-08-05 |
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