EP2617526B1 - Wrench - Google Patents
Wrench Download PDFInfo
- Publication number
- EP2617526B1 EP2617526B1 EP13151272.5A EP13151272A EP2617526B1 EP 2617526 B1 EP2617526 B1 EP 2617526B1 EP 13151272 A EP13151272 A EP 13151272A EP 2617526 B1 EP2617526 B1 EP 2617526B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- segment
- ring
- lever
- previous
- spanner according
- 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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- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 description 4
- 210000003811 finger Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
Classifications
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- 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
- B25B13/00—Spanners; Wrenches
- B25B13/10—Spanners; Wrenches with adjustable jaws
- B25B13/28—Spanners; Wrenches with adjustable jaws the jaws being pivotally movable
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- 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
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type
-
- 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
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
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- 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
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
- B25B13/52—Chain or strap wrenches
Definitions
- the invention relates to a wrench according to the preamble of claim 1.
- a wrench is equipped with a handle and a swing-open ring for the positive and in particular rotationally fixed grip a screw head or a nut, wherein the ring, a first segment which is arranged on the handle a free second segment and a connecting member which connects the second segment hingedly connected to the first segment, wherein the connecting member is pivotally connected about a first pivot axis on the first segment, wherein the second segment is pivotally connected about a second pivot axis to the connecting member, and wherein the first pivot axis and the second pivot axis parallel and spaced from each other.
- a generic wrench is from the EP 1 165 291 A1 known. This document teaches a wrench with a swing-up ring which provides a ratchet function.
- the US 2010/0122610 A1 describes another wrench with swivel ring.
- the object of the invention is to develop a generic wrench so that a particularly high level of user-friendliness and a particularly high versatility is given with a particularly high reliability and simple design.
- a wrench according to the invention is characterized in that a lever for pivoting the ring is arranged on the connecting member.
- a first basic idea of the invention can be seen to provide a lever on the swing-open ring.
- the ring can be pivoted into an open position, so that it can be pushed laterally in the radial direction onto a threaded rod.
- An awkward threading of the wrench from the end of the threaded rod ago can therefore be omitted and the wrench can in particular at the middle of the threaded rod are used even if the threaded rod is blocked at one or both ends for the ring.
- the invention is based inter alia on the idea that the Aufschwenkiana of the ring can not only cause a ratchet function for loosening and / or tightening a nut or a screw, but that it additionally allows opening of the ring and thus a radial sliding onto a threaded rod.
- the invention is based on this and provides a lever with which the pivoting mechanism can be actuated in a particularly simple manner. In particular, it is no longer necessary according to the invention for opening the ring to grip the ring itself, as it allows the inventive lever to operate the Aufschwenkmechanismus in a remote location from the ring.
- the ring can be opened in a particularly simple manner even in poorly accessible positions and advantageously with the same hand, which also holds the handle.
- a particularly high level of user-friendliness and a particularly high versatility is given.
- Another basic idea of the invention is to fasten the lever to the connecting member, which is arranged between the free second segment and the relative first segment fixed to the handle. This can ensure that the ratchet function is not affected by the lever. Moreover, since the connecting member covers a comparatively short distance when the ring is opened, the lever travel required to open the ring can also be small. According to the invention thus a particularly compact wrench can be obtained, which further increases the versatility.
- the handle, the first segment, the connecting link and the second segment form a chain. Viewed along this chain, the first segment is located closer to the handle than the second segment.
- the second segment can be fastened to the handle only indirectly, namely via the connecting member and the first segment.
- the two segments and the connecting member are expediently rigid, in particular formed of a metal material.
- the ring has a ratchet function which is suitable for loosening and tightening one of the nuts. The ring is attached to the handle, especially at the end of the handle.
- a pressing of the lever causes the ring to open towards the first segment.
- an opening of the ring is effected by a particularly space-saving compression movement, so that the wrench can be used under even cramped space conditions and the range of use is thus further increased.
- a structurally particularly simple and at the same time user-friendly embodiment can be provided in that the lever extends, at least in sections, along an outer side of the first segment facing away from the second segment and / or the interior of the ring.
- the first segment extends at least partially between the lever and the second segment.
- the lever may have a pressure range. This pressure area can be used to rest a finger for pressing the lever towards the first segment, ie for opening the ring.
- the lever in the pressure range with the handle forms an angle of less than 60 °, in particular less than 45 °.
- the dimensions of the wrench can be further reduced with good usability and thus the range of applications can be extended.
- the intermediate space between the pressure region of the lever and the first segment is free. Since, according to this embodiment, no further elements are present between the pressure region and the first segment, the available lever travel is particularly large. As a result, a reduction of the dimensions is possible again.
- the connecting member is pivotally connected about a first pivot axis on the first segment, and that the second segment is pivotally connected about a second pivot axis on the connecting member, wherein the first pivot axis and the second pivot axis parallel and spaced from each other.
- This can be given a particularly large opening angle for the ring with a particularly high reliability and a particularly simple design.
- the first segment, the link and the second segment are a one-dimensionally movable chain, i. form a joint chain. Between the first segment and the handle, another joint may be arranged, which allows a pivoting in a further spatial direction. But the first segment and the handle can also be rigidly connected and / or be made in one piece.
- the lever in particular over its entire length, runs parallel to the two pivot axes. Since the lever according to this embodiment is not twisted, it can be produced in a particularly simple manner.
- the lever is angled at least simply, preferably around at least one bending axis running parallel to the pivot axes.
- the lever is thus preferably at least partially L-shaped. This can be advantageous in terms of size and at the same time the production cost.
- the lever can be better adapted to the shape of the underlying segment and / or incorrect operation can be avoided.
- the direction of curvature is the same in the various bending areas.
- the lever can be curved in all bending areas to the first segment.
- the lever consists of a bent sheet metal. This is advantageous in terms of manufacturing costs.
- the connecting member is a front bearing plate on which preferably the two segments are mounted, a rear bearing plate on which preferably the two segments are mounted, and a central web which supports the two bearing plates connects, has.
- the lever can be fastened in a particularly simple manner on the central web.
- the individual bearing plates can also have recesses and / or be designed in several parts, wherein the individual parts can also be connected only by the central web.
- the connecting member has a first axle pin for the first segment and a second axle pin for the second segment.
- the axle bolts can in particular be designed as screws, that is to say with an external thread, since this allows a particularly simple fixing. It is particularly preferred that the two axle bolts each extend between the two bearing plates.
- the ring has a ratchet function.
- This ratchet function can for example be realized in that upon rotation of the wrench relative to the nut or the screw head in the release direction, a pivoting of the second segment from the first segment can take place, so that a rotationally fixed connection between the ring on the one hand and the mother or the screw head on the other is canceled, and that a restoring device is provided, which returns the second segment back to the first segment.
- a compression spring for closing the ring is arranged between the two segments. This compression spring forces the ring in a closed position. It can also form the restoring device required for the ratchet function.
- the first segment has a first tooth
- the second segment has a second tooth, wherein the first tooth abuts the second tooth with its flank facing the interior of the ring.
- a partial toothing between the two segments is given.
- the teeth meshing in one direction of rotation ensure that the second segment is not only moved translationally but also rotationally relative to the first segment when the ring is opened by actuating the lever.
- the ring can open particularly wide even with a small lever travel, which facilitates inter alia the insertion of a threaded rod in the ring.
- swiveling of the second segment away from the first segment is not hindered by the teeth, so that the ratcheting function is not impaired.
- a further advantageous embodiment of the invention lies in the fact that the wrench has a front side facing the observer and a rear side facing away from the observer when viewed through the ring, and that the front side has a colored or geometric marking so that it differs from the rear side.
- This embodiment takes into account that in a wrench according to the invention, the ratchet function is generally not reversible, so that tightening and loosening a nut may require different orientations of the wrench.
- the advantageous marking makes it possible to recognize particularly quickly for which direction of rotation the wrench is oriented.
- the first segment has at least one edge located inside the ring, and / or that the second segment has at least one edge located inside the ring. These edges serve to receive corresponding outer edges of the screw head or the nut.
- the figures show a variant of a wrench according to the invention in various views and operating states.
- FIG. 2 shows, the wrench on a handle 6, at the end a ring 3 is hinged.
- This ring 3 has (see in particular FIG. 1 ), a first segment 11, an approximately parallel thereto extending second segment 12 and a connecting member 20, which connects the two segments 11 and 12 together.
- an eye 15 is arranged, on which the handle 6 is articulated (compare, in particular Figures 1 and 2 ).
- the first segment 11 has two edges 17 in the interior of the ring 3, and the second segment 12 in the interior of the ring 3 has two edges 18 (cf. FIG. 3 ).
- the edges 17 and 18 are parallel to each other and take on the outer edges of a arranged in the interior of the ring 3 nut or arranged there screw head.
- Fig. 4 shows, the segments 11 and 12 between the edges 17 and 18 convex portions 70, which serve for producing a positive rotationally fixed connection between the ring and 3 and arranged in the interior of the ring 3 nut or arranged there screw head.
- FIG. 1 shows, the connecting member 20 is pivotally mounted on the first segment 11 about a pivot axis 41 and the second segment 12 pivotally about a pivot axis 42, wherein the two pivot axes 41 and 42 are parallel and spaced from each other.
- the pivotability of the segments 11 and 12 about the two pivot axes 41 and 42 allows the ring 3 from a in the FIGS. 4 and 5 shown closed position in a in the FIGS. 6 and 7 to transfer illustrated open position.
- the ring 3, the mother or the screw head form fit rotatably grip.
- the second segment 12 abuts the first segment 11 at its end opposite the connecting member 20.
- the second segment 12 is spaced at its opposite end of the connecting member 20 from the first segment 11, so that the ring 3 can be pushed radially onto a threaded rod.
- the pivot axis of the eye ie the pivot axis about which the handle 6 is pivotable relative to the ring 3, is perpendicular to the pivot axes 41 and 42.
- a compression spring 28 is arranged, which is compressed when opening the ring 3, and thus forces the ring 3 in its closed position.
- the compression spring 28 may be arranged in particular in the interior of the connecting member.
- FIGS. 5 and 7 further show, on the first segment 11, a tooth 51 protrudes radially, which abuts on its side facing the interior of the ring 3 flank on a second tooth 52 which projects radially on the second segment 12.
- the two teeth 51 and 52 meshing only in one direction of rotation ensure that the second segment 12 makes a rotational movement relative to the connecting member 20 about the pivot axis 42 and the ring 3 opens when the connecting member 20 relative to the first segment 11 about the pivot axis 41 is pivoted around.
- the swing-ring 3 provides a ratchet function, which is realized in that the second segment 12 can escape from the first segment 11 during a rotation of the wrench in the release direction and is then reset by the compression spring 28 again. So that the user can quickly grasp which is the release direction, as in FIG. 4 shown on the viewing direction through the ring 3 front of the wrench a color mark 60 may be provided on the in FIG. 4 unrecognizable back of the wrench is missing.
- the connecting member 20 has a front bearing plate 21, a parallel to the front bearing plate 21 extending rear bearing plate 22 and a perpendicular to the bearing plates 21, 22 extending central web 23, the bearing plates 21 and 22 facing away from the interior of the ring 3 outer edges connects with each other.
- the connecting member 20 further comprises two parallel and formed as a slotted screws axle bolts 25 and 26.
- the two axle bolts 25 and 26 are arranged in recesses of the front bearing plate 21 and in recesses of the rear bearing plate 22.
- the second segment 12 is pivotally mounted.
- the wrench also has a lever 30 which serves to open the ring 3 against the action of the compression spring 28.
- the lever 30 is fixed to the connecting member 20, for example, welded, and consists of a bent plate, which runs parallel to the two pivot axes 41, 42.
- the lever 30 is angled in an L-shape, wherein a first leg of the L-shaped lever 30 is formed by a pressure region 31 and a second leg by a connecting portion 32.
- the lever 30 is attached to the connecting member 20.
- the pressure region 31 extends along the outer side 13 of the first segment 11, which faces away from the interior of the ring 3. For a maximum lever travel between the outer side 13 of the first segment 11 and the pressure region 31, no further elements are arranged, that is, the gap 14 between the first segment 11 and the pressure region 31 of the lever 30 is free.
- FIG. 2 shows the pressure range 31 of the lever with the handle at an angle of about 3 °, ie the longitudinal axis 73 of the lever 30 in the pressure region 31 extends at an angle of about 3 ° to the longitudinal axis 76 of the handle. 6
- the lever 30 may also be repeatedly bent, for example, twice, so that it is even better adapted to the shape of the underlying first segment 11.
- the lever 30 has on its side facing away from the connecting region 32 a back region 33 which is angled relative to the pressure region 31 located between the connecting region 32 and the back region 33.
- a wrench designed as a ring wrench which has both a ratchet function and an opening function.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
Die Erfindung betrifft einen Schraubenschlüssel gemäss dem Oberbegriff des Anspruchs 1. Ein solcher Schraubenschlüssel ist ausgestattet mit einem Griff und einem aufschwenkbaren Ring zum formschlüssigen und insbesondere drehfesten Umgreifen eines Schraubenkopfes oder einer Mutter, wobei der Ring ein erstes Segment, das am Griff angeordnet ist, ein freies zweites Segment und ein Verbindungsglied aufweist, welches das zweite Segment gelenkig mit dem ersten Segment verbindet, wobei das Verbindungsglied um eine erste Schwenkachse schwenkbar am ersten Segment angelenkt ist, wobei das zweite Segment um eine zweite Schwenkachse schwenkbar am Verbindungsglied angelenkt ist, und wobei die erste Schwenkachse und die zweite Schwenkachse parallel und beabstandet zueinander verlaufen.The invention relates to a wrench according to the preamble of claim 1. Such a wrench is equipped with a handle and a swing-open ring for the positive and in particular rotationally fixed grip a screw head or a nut, wherein the ring, a first segment which is arranged on the handle a free second segment and a connecting member which connects the second segment hingedly connected to the first segment, wherein the connecting member is pivotally connected about a first pivot axis on the first segment, wherein the second segment is pivotally connected about a second pivot axis to the connecting member, and wherein the first pivot axis and the second pivot axis parallel and spaced from each other.
Ein gattungsgemässer Schraubenschlüssel ist aus der
Die
Die
Aufgabe der Erfindung ist es, einen gattungsgemässen Schraubenschlüssel so weiterzubilden, dass bei besonders hoher Zuverlässigkeit und einfacher Konstruktion eine besonders hohe Anwenderfreundlichkeit und eine besonders hohe Einsatzvielfalt gegeben ist.The object of the invention is to develop a generic wrench so that a particularly high level of user-friendliness and a particularly high versatility is given with a particularly high reliability and simple design.
Die Aufgabe wird erfindungsgemäss durch einen Schraubenschlüssel mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.The object is achieved according to the invention by a wrench with the features of claim 1. Preferred embodiments are given in the dependent claims.
Ein erfindungsgemässer Schraubenschlüssel ist dadurch gekennzeichnet, dass am Verbindungsglied ein Hebel zum Aufschwenken des Rings angeordnet ist.A wrench according to the invention is characterized in that a lever for pivoting the ring is arranged on the connecting member.
Ein erster Grundgedanke der Erfindung kann darin gesehen werden, am aufschwenkbaren Ring einen Hebel vorzusehen. Mittels dieses Hebels kann der Ring in eine Offenstellung aufgeschwenkt werden, so dass er seitlich in radialer Richtung auf eine Gewindestange aufgeschoben werden kann. Ein umständliches Auffädeln des Schraubenschlüssels vom Ende der Gewindestange her kann somit entfallen und der Schraubenschlüssel kann insbesondere auch dann an der Mitte der Gewindestange zum Einsatz kommen, wenn die Gewindestange an einem oder beiden Enden für den Ring blockiert ist. Die Erfindung basiert unter anderem auf dem Gedanken, dass die Aufschwenkbarkeit des Rings nicht nur eine Ratschenfunktion zum Lösen und/oder Anziehen einer Mutter oder einer Schraube bewirken kann, sondern dass sie zusätzlich ein Öffnen des Rings und damit ein radiales Aufschieben auf eine Gewindestange erlaubt. Hierauf baut die Erfindung auf und sieht einen Hebel vor, mit dem der Aufschwenkmechanismus in besonders einfacher Weise betätigt werden kann. Insbesondere ist es nach der Erfindung zum Öffnen des Rings nicht mehr erforderlich, den Ring selbst zu greifen, da es der erfindungsgemässe Hebel erlaubt, den Aufschwenkmechanismus an einem vom Ring entfernten Ort zu betätigen. Somit kann erfindungsgemäss der Ring in besonders einfacher Weise auch an schlecht zugänglichen Positionen und vorteilhafterweise mit derselben Hand geöffnet werden, die auch den Griff hält. Somit ist erfindungsgemäss eine besonders hohe Anwenderfreundlichkeit und eine besonders hohe Einsatzvielfalt gegeben.A first basic idea of the invention can be seen to provide a lever on the swing-open ring. By means of this lever, the ring can be pivoted into an open position, so that it can be pushed laterally in the radial direction onto a threaded rod. An awkward threading of the wrench from the end of the threaded rod ago can therefore be omitted and the wrench can in particular at the middle of the threaded rod are used even if the threaded rod is blocked at one or both ends for the ring. The invention is based inter alia on the idea that the Aufschwenkbarkeit of the ring can not only cause a ratchet function for loosening and / or tightening a nut or a screw, but that it additionally allows opening of the ring and thus a radial sliding onto a threaded rod. The invention is based on this and provides a lever with which the pivoting mechanism can be actuated in a particularly simple manner. In particular, it is no longer necessary according to the invention for opening the ring to grip the ring itself, as it allows the inventive lever to operate the Aufschwenkmechanismus in a remote location from the ring. Thus, according to the invention, the ring can be opened in a particularly simple manner even in poorly accessible positions and advantageously with the same hand, which also holds the handle. Thus, according to the invention a particularly high level of user-friendliness and a particularly high versatility is given.
Ein weiterer Grundgedanke der Erfindung liegt darin, den Hebel am Verbindungsglied zu befestigen, welches zwischen dem freien zweiten Segment und dem bezüglichem dem Griff festen ersten Segment angeordnet ist. Dies kann sicherstellen, dass die Ratschenfunktion durch den Hebel nicht beeinträchtigt wird. Da das Verbindungsglied beim Öffnen des Rings überdies einen vergleichsweise kurzen Weg zurücklegt, kann auch der zum Öffnen des Rings erforderliche Hebelweg klein sein. Erfindungsgemäss kann somit ein besonders kompakter Schraubenschlüssel erhalten werden, was die Einsatzvielfalt noch weiter erhöht.Another basic idea of the invention is to fasten the lever to the connecting member, which is arranged between the free second segment and the relative first segment fixed to the handle. This can ensure that the ratchet function is not affected by the lever. Moreover, since the connecting member covers a comparatively short distance when the ring is opened, the lever travel required to open the ring can also be small. According to the invention thus a particularly compact wrench can be obtained, which further increases the versatility.
Erfindungsgemäss bilden der Griff, das erste Segment, das Verbindungsglied und das zweite Segment eine Kette. Längs dieser Kette betrachtet ist das erste Segment näher am Griff angeordnet als das zweite Segment. Anders ausgedrückt kann das zweite Segment erfindungsgemäss lediglich mittelbar, nämlich über das Verbindungsglied und das erste Segment, am Griff befestigt sein. Die beiden Segmente und das Verbindungsglied sind zweckmässigerweise starr, insbesondere aus einem Metallmaterial ausgebildet. Erfindungsgemäss hat der Ring eine Ratschenfunktion, die zum Lösen und Anziehen einer der Mutter geeignet ist. Der Ring ist, insbesondere am Ende des Griffs, am Griff befestigt.According to the invention, the handle, the first segment, the connecting link and the second segment form a chain. Viewed along this chain, the first segment is located closer to the handle than the second segment. In other words, according to the invention, the second segment can be fastened to the handle only indirectly, namely via the connecting member and the first segment. The two segments and the connecting member are expediently rigid, in particular formed of a metal material. According to the invention, the ring has a ratchet function which is suitable for loosening and tightening one of the nuts. The ring is attached to the handle, especially at the end of the handle.
Besonders bevorzugt ist es, dass ein Drücken des Hebels zum ersten Segment hin ein Öffnen des Rings bewirkt. Gemäss dieser Ausführungsform wird ein Öffnen des Rings durch eine besonders platzsparende Kompressionsbewegung bewirkt, so dass der Schraubenschlüssel unter noch beengteren Platzverhältnissen eingesetzt werden kann und das Einsatzspektrum somit noch weiter vergrössert ist.It is particularly preferred that a pressing of the lever causes the ring to open towards the first segment. According to this embodiment, an opening of the ring is effected by a particularly space-saving compression movement, so that the wrench can be used under even cramped space conditions and the range of use is thus further increased.
Eine konstruktiv besonders einfache und zugleich bedienerfreundliche Ausführungsform kann dadurch gegeben sein, dass sich der Hebel zumindest abschnittsweise entlang einer dem zweiten Segment und/oder dem Inneren des Rings abgewandten Aussenseite des ersten Segments erstreckt. Insbesondere kann vorgesehen sein, dass das erste Segment zumindest bereichsweise zwischen dem Hebel und dem zweiten Segment verläuft.A structurally particularly simple and at the same time user-friendly embodiment can be provided in that the lever extends, at least in sections, along an outer side of the first segment facing away from the second segment and / or the interior of the ring. In particular, it can be provided that the first segment extends at least partially between the lever and the second segment.
Erfindungsgemäss kann der Hebel einen Druckbereich aufweisen. Dieser Druckbereich kann zur Auflage eines Fingers zum Drücken des Hebels zum ersten Segment hin, also zum Öffnen des Rings, dienen.According to the invention, the lever may have a pressure range. This pressure area can be used to rest a finger for pressing the lever towards the first segment, ie for opening the ring.
Besonders bevorzugt ist es, dass der Hebel im Druckbereich mit dem Griff einen Winkel kleiner 60°, insbesondere kleiner 45° einschliesst. Hierdurch können die Abmessungen des Schraubenschlüssels bei guter Bedienbarkeit noch weiter verringert und somit das Anwendungsspektrum erweitert werden.It is particularly preferred that the lever in the pressure range with the handle forms an angle of less than 60 °, in particular less than 45 °. As a result, the dimensions of the wrench can be further reduced with good usability and thus the range of applications can be extended.
Weiterhin ist es zweckmässig, dass der Zwischenraum zwischen dem Druckbereich des Hebels und dem ersten Segment frei ist. Da gemäss dieser Ausführungsform zwischen dem Druckbereich und dem ersten Segment keine weiteren Elemente vorhanden sind, ist der zur Verfügung stehende Hebelweg besonders gross. Hierdurch ist abermals eine Verringerung der Abmessungen möglich.Furthermore, it is expedient that the intermediate space between the pressure region of the lever and the first segment is free. Since, according to this embodiment, no further elements are present between the pressure region and the first segment, the available lever travel is particularly large. As a result, a reduction of the dimensions is possible again.
Erfindungsgemäss ist vorgesehen, dass das Verbindungsglied um eine erste Schwenkachse schwenkbar am ersten Segment angelenkt ist, und dass das zweite Segment um eine zweite Schwenkachse schwenkbar am Verbindungsglied angelenkt ist, wobei die erste Schwenkachse und die zweite Schwenkachse parallel und beabstandet zueinander verlaufen. Hierdurch kann bei einer besonders hohen Zuverlässigkeit und einer besonders einfachen Bauform ein besonders grosser Öffnungswinkel für den Ring gegeben sein. Insbesondere kann vorgesehen sein, dass das erste Segment, das Verbindungsglied und das zweite Segment eine eindimensional bewegliche Kette, d.h. eine Gelenkkette bilden. Zwischen dem ersten Segment und dem Griff kann ein weiteres Gelenk angeordnet sein, welches eine Verschwenkung in einer weiteren Raumrichtung erlaubt. Das erste Segment und der Griff können aber auch starr verbunden sein und/oder einstückig ausgeführt sein.According to the invention it is provided that the connecting member is pivotally connected about a first pivot axis on the first segment, and that the second segment is pivotally connected about a second pivot axis on the connecting member, wherein the first pivot axis and the second pivot axis parallel and spaced from each other. This can be given a particularly large opening angle for the ring with a particularly high reliability and a particularly simple design. In particular, it may be provided that the first segment, the link and the second segment are a one-dimensionally movable chain, i. form a joint chain. Between the first segment and the handle, another joint may be arranged, which allows a pivoting in a further spatial direction. But the first segment and the handle can also be rigidly connected and / or be made in one piece.
Es ist besonders vorteilhaft, dass der Hebel, insbesondere auf seiner gesamten Länge, parallel zu den beiden Schwenkachsen verläuft. Da der Hebel gemäss dieser Ausführungsform nicht tordiert ist, kann er in besonders einfacher Weise hergestellt werden.It is particularly advantageous that the lever, in particular over its entire length, runs parallel to the two pivot axes. Since the lever according to this embodiment is not twisted, it can be produced in a particularly simple manner.
Weiterhin ist es bevorzugt, dass der Hebel zumindest einfach, vorzugsweise um zumindest eine parallel zu den Schwenkachsen verlaufende Biegeachse, abgewinkelt ist. Der Hebel ist somit vorzugsweise zumindest bereichsweise L-förmig ausgebildet. Dies kann im Hinblick auf die Baugrösse und gleichzeitig den Herstellungsaufwand vorteilhaft sein. Beispielsweise um die Handhabbarkeit weiter zu verbessern, kann auch vorgesehen sein, dass der Hebel mehrfach, in zumindest zwei beabstandeten Biegebereichen, abgewinkelt ist. Hierdurch kann der Hebel noch besser an die Form des darunterliegenden Segments angepasst werden und/oder Fehlbedienungen können vermieden werden. Vorzugsweise ist die Krümmungsrichtung in den verschiedenen Biegebereichen dieselbe. Insbesondere kann der Hebel in allen Biegebereichen zum ersten Segment hin gekrümmt sein.Furthermore, it is preferred that the lever is angled at least simply, preferably around at least one bending axis running parallel to the pivot axes. The lever is thus preferably at least partially L-shaped. This can be advantageous in terms of size and at the same time the production cost. For example, to further improve the handling, it can also be provided that the lever is angled several times, in at least two spaced bending regions. As a result, the lever can be better adapted to the shape of the underlying segment and / or incorrect operation can be avoided. Preferably, the direction of curvature is the same in the various bending areas. In particular, the lever can be curved in all bending areas to the first segment.
Vorzugsweise kann vorgesehen sein, dass der Hebel aus einem gebogenen Blech besteht. Dies ist im Hinblick auf den Fertigungsaufwand vorteilhaft.Preferably, it may be provided that the lever consists of a bent sheet metal. This is advantageous in terms of manufacturing costs.
Eine besonders robuste und zuverlässige und zugleich konstruktiv einfache Bauform kann dadurch gegeben sein, dass das Verbindungsglied eine vordere Lagerplatte, an der vorzugsweise die beiden Segmente gelagert sind, eine hintere Lagerplatte, an der vorzugsweise die beiden Segmente gelagert sind, und einen Mittelsteg, der die beiden Lagerplatten verbindet, aufweist. In diesem Fall kann der Hebel in besonders einfacher Weise am Mittelsteg befestigt sein. Die einzelnen Lagerplatten können auch Ausnehmungen aufweisen und/oder mehrteilig ausgeführt sein, wobei die einzelnen Teile auch nur durch den Mittelsteg verbunden sein können.A particularly robust and reliable and at the same time structurally simple design can be given by the fact that the connecting member is a front bearing plate on which preferably the two segments are mounted, a rear bearing plate on which preferably the two segments are mounted, and a central web which supports the two bearing plates connects, has. In this case, the lever can be fastened in a particularly simple manner on the central web. The individual bearing plates can also have recesses and / or be designed in several parts, wherein the individual parts can also be connected only by the central web.
Insbesondere kann vorgesehen sein, dass das Verbindungsglied einen ersten Achsbolzen für das erste Segment und einen zweiten Achsbolzen für das zweite Segment aufweist. Die Achsbolzen können insbesondere als Schrauben, also mit einem Aussengewinde, ausgebildet sein, da dies eine besonders einfache Fixierung ermöglicht. Besonders bevorzugt ist es, dass sich die beiden Achsbolzen jeweils zwischen den beiden Lagerplatten erstrecken.In particular, it can be provided that the connecting member has a first axle pin for the first segment and a second axle pin for the second segment. The axle bolts can in particular be designed as screws, that is to say with an external thread, since this allows a particularly simple fixing. It is particularly preferred that the two axle bolts each extend between the two bearing plates.
Erfindungsgemäss ist es vorteilhaft, dass der Ring eine Ratschenfunktion aufweist. Diese Ratschenfunktion kann beispielsweise dadurch realisiert sein, dass bei Drehung des Schraubenschlüssels relativ zur Mutter oder zum Schraubenkopf in Freigaberichtung ein Aufschwenken des zweiten Segments vom ersten Segment hinweg erfolgen kann, so dass eine drehfeste Verbindung zwischen dem Ring einerseits und der Mutter bzw. dem Schraubenkopf andererseits aufgehoben ist, und dass eine Rückstelleinrichtung vorgesehen ist, welche das zweite Segment wieder zum ersten Segment hin zurückführt.According to the invention, it is advantageous that the ring has a ratchet function. This ratchet function can for example be realized in that upon rotation of the wrench relative to the nut or the screw head in the release direction, a pivoting of the second segment from the first segment can take place, so that a rotationally fixed connection between the ring on the one hand and the mother or the screw head on the other is canceled, and that a restoring device is provided, which returns the second segment back to the first segment.
Weiterhin ist es vorteilhaft, dass zwischen den beiden Segmenten eine Druckfeder zum Schliessen des Rings angeordnet ist. Diese Druckfeder zwingt den Ring in eine Geschlossenstellung. Sie kann auch die für die Ratschenfunktion erforderliche Rückstelleinrichtung bilden.Furthermore, it is advantageous that a compression spring for closing the ring is arranged between the two segments. This compression spring forces the ring in a closed position. It can also form the restoring device required for the ratchet function.
Überdies ist es bevorzugt, dass das erste Segment einen ersten Zahn aufweist, und dass das zweite Segment einen zweiten Zahn aufweist, wobei der erste Zahn mit seiner dem Inneren des Rings zugewandten Flanke am zweiten Zahn anliegt. Gemäss dieser Ausführungsform ist eine teilweise Verzahnung zwischen den beiden Segmenten gegeben. Einerseits sorgen die nur in einer Drehrichtung kämmenden Zähne dafür, dass das zweite Segment beim Öffnen des Rings durch Betätigen des Hebels nicht nur translatorisch, sondern auch rotatorisch relativ zum ersten Segment bewegt wird. Infolgedessen kann sich der Ring auch bei kleinem Hebelweg besonders weit öffnen, was unter anderem das Einführen einer Gewindestange in den Ring erleichtert. Anderseits wird durch die Zähne ein Aufschwenken des zweiten Segments vom ersten Segment hinweg nicht behindert, so dass die Ratschenfunktion nicht beeinträchtigt wird.Moreover, it is preferred that the first segment has a first tooth, and that the second segment has a second tooth, wherein the first tooth abuts the second tooth with its flank facing the interior of the ring. According to this embodiment, a partial toothing between the two segments is given. On the one hand, the teeth meshing in one direction of rotation ensure that the second segment is not only moved translationally but also rotationally relative to the first segment when the ring is opened by actuating the lever. As a result, the ring can open particularly wide even with a small lever travel, which facilitates inter alia the insertion of a threaded rod in the ring. On the other hand, swiveling of the second segment away from the first segment is not hindered by the teeth, so that the ratcheting function is not impaired.
Eine weitere vorteilhafte Ausgestaltung der Erfindung liegt darin, dass der Schraubenschlüssel bei Blickrichtung durch den Ring eine dem Betrachter zugewandte Vorderseite und eine dem Betrachter abgewandte Rückseite aufweist, und dass die Vorderseite eine farbliche oder geometrische Markierung aufweist, so dass sie sich von der Rückseite unterscheidet. Diese Ausführungsform berücksichtigt, dass bei einem erfindungsgemässen Schraubenschlüssel die Ratschenfunktion in der Regel nicht umkehrbar ist, so dass das Festziehen und das Lösen einer Mutter unterschiedliche Orientierungen des Schraubenschlüssels erfordern können. Die vorteilhafte Markierung erlaubt es besonders rasch zu erkennen, für welchen Drehsinn der Schraubenschlüssel orientiert ist.A further advantageous embodiment of the invention lies in the fact that the wrench has a front side facing the observer and a rear side facing away from the observer when viewed through the ring, and that the front side has a colored or geometric marking so that it differs from the rear side. This embodiment takes into account that in a wrench according to the invention, the ratchet function is generally not reversible, so that tightening and loosening a nut may require different orientations of the wrench. The advantageous marking makes it possible to recognize particularly quickly for which direction of rotation the wrench is oriented.
Überdies ist es erfindungsgemäss, dass das erste Segment zumindest eine im Inneren des Rings liegende Kante aufweist, und/oder dass das zweite Segment zumindest eine im Inneren des Rings liegende Kante aufweist. Diese Kanten dienen zur Aufnahme korrespondierender Aussenkanten des Schraubenkopfs bzw. der Mutter.Moreover, it is according to the invention that the first segment has at least one edge located inside the ring, and / or that the second segment has at least one edge located inside the ring. These edges serve to receive corresponding outer edges of the screw head or the nut.
Die vorstehend und nachstehend beschriebenen Ausführungsbeispiele können grundsätzlich frei kombiniert werden.The embodiments described above and below can basically be freely combined.
Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele näher erläutert, die schematisch in den beiliegenden Figuren dargestellt sind. In den Figuren zeigen schematisch:
- Figur 1:
- eine erste perspektivische Darstellung einer Variante eines erfindungsgemässen Schraubenschlüssels;
- Figur 2:
- eine Frontansicht des Schraubenschlüssels aus
Figur 1 mit Griff; - Figur 3:
- eine zweite perspektivische Darstellung des Schraubenschlüssels aus
Figur 1 ; - Figur 4:
- den Schraubenschlüssel aus
Figur 1 bei geschlossenem Ring in Frontansicht mit einem modifizierten Hebel; - Figur 5:
- den Schraubenschlüssel aus
Figur 1 bei geschlossenem Ring in Frontansicht, wobei das Verbindungsglied zum Zweck der Darstellung der Feder und der Zähne weggelassen ist; - Figur 6:
- den Schraubenschlüssel aus
Figur 1 bei aufgeschwenktem Ring in Frontansicht; und - Figur 7:
- den Schraubenschlüssel aus
Figur 1 bei aufgeschwenktem Ring in Frontansicht, wobei das Verbindungsglied zum Zweck der Darstellung der Feder und der Zähne weggelassen ist.
- FIG. 1:
- a first perspective view of a variant of an inventive wrench;
- FIG. 2:
- a front view of the wrench
FIG. 1 with handle; - FIG. 3:
- a second perspective view of the wrench
FIG. 1 ; - FIG. 4:
- the wrench off
FIG. 1 with closed ring in front view with a modified lever; - FIG. 5:
- the wrench off
FIG. 1 with the ring closed in front view, with the link omitted for the purpose of illustrating the spring and teeth; - FIG. 6:
- the wrench off
FIG. 1 with swung ring in front view; and - FIG. 7:
- the wrench off
FIG. 1 with swung-open ring in front view, wherein the connecting member for the purpose of representation of the spring and the teeth is omitted.
Der Übersichtlichkeit halber ist der erfindungsgemässe Griff lediglich in
Die Figuren zeigen eine Variante eines erfindungsgemässen Schraubenschlüssels in verschiedenen Ansichten und Betriebszuständen.The figures show a variant of a wrench according to the invention in various views and operating states.
Wie insbesondere
Wie insbesondere
Die Schwenkachse des Auges, also die Schwenkachse, um welche der Griff 6 relativ zum Ring 3 verschwenkbar ist, verläuft senkrecht zu den Schwenkachsen 41 und 42.The pivot axis of the eye, ie the pivot axis about which the
Wie die
Wie die
Der aufschwenkbare Ring 3 stellt eine Ratschenfunktion zur Verfügung, die dadurch realisiert ist, dass das zweite Segment 12 bei einer Drehung des Schraubenschlüssels in Freigaberichtung vom ersten Segment 11 hinweg ausweichen kann und sodann von der Druckfeder 28 wieder zurückgestellt wird. Damit der Benutzer rasch erfassen kann, welches die Freigaberichtung ist, kann, wie in
Wie insbesondere
Wie unter anderem
Wie insbesondere
Wie in
Zum Öffnen des Rings 3 wird der Hebel 30 in seinem Druckbereich 31 zum Inneren des Rings 3 hin, also auch zum benachbarten ersten Segment 11 hin, angedrückt. Dies kann beispielsweise durch den Daumen einer Hand eines Benutzers geschehen, welche mit den anderen Fingern den Griff 6 des Schraubenschlüssels umgreift. Erfindungsgemäss ist also ein als Ringschlüssel ausgebildeter Schraubenschlüssel vorgesehen, der sowohl eine Ratschenfunktion als auch eine Öffnungsfunktion hat.To open the
Claims (12)
- Spanner with
a handle (6) and
a swivelable ring (3) for grasping a screw head or a nut in a form-fitting way, in which the ring (3) has a first segment (11), which is arranged on the handle (6), a free second segment (12) and a connecting link (20), which connects the second segment (12) to the first segment (11) in an articulated way,
in which the connecting link (20) is articulated to the first segment (11) so that it may swivel around a first swivel axis (41),
in which the second segment (12) is articulated to the connecting link (20) so that it may swivel around a second swivel axis (42), and
in which the first swivel axis (41) and the second swivel axis (42) run parallel and at a distance from each other,
characterised in that
a lever (30) for swivelling the ring (3) is arranged on the connecting link (20). - Spanner according to claim 1,
the lever (30) extends at least in sections along an outer surface (13) of the first segment (11) facing away from the inside of the ring (3). - Spanner according to one of the previous claims,
characterised in that
the lever (30) has a pressure area (31), in which the lever (30) encloses an angle of less than 45° with the handle (6). - Spanner according to claim 3,
characterised in that
the intermediate space (14) between the pressure area (31) of the lever (30) and the first segment (11) is free. - Spanner according to one of the previous claims,
characterised in that
the lever (30) runs parallel to both swivel axes (41, 42) over its whole length. - Spanner according to one of the previous claims,
characterised in that
the lever (30) is made L-shaped at least in sections. - Spanner according to one of the previous claims,
characterised in that
the connecting link (20) connects a front bearing plate (21), a rear bearing plate (22) and a middle bar (23), which connects both bearing plates (21, 22), in which the lever (30) is fastened to the middle bar (23), and
the connecting link (20) has a first king pin (25) for the first segment (11) and a second king pin (26) for the second segment (12),
in which both king pins (25, 26) extend between both bearing plates (21, 22). - Spanner according to one of the previous claims,
characterised in that
the ring (3) has a ratchet function. - Spanner according to one of the previous claims,
characterised in that
a compression spring (28) for closing the ring (3) is arranged between both segments (11, 12). - Spanner according to one of the previous claims,
characterised in that
the first segment (11) has a first tooth (51), and the second segment (12) has a second tooth (52), in which the first tooth (51) lies on the second tooth (52) with its side facing towards the inside of the ring (3). - Spanner according to one of the previous claims,
characterised in that
with a viewing direction through the ring (3), it has a front face facing towards the observer and a rear face facing away from the observer, and the front face has coloured or geometric marking (60), so that it differs from the rear face. - Spanner according to one of the previous claims,
characterised in that
the first segment (11) has at least one edge (17) lying inside the ring (3), and
the second segment (12) has at least one edge (18) lying inside the ring (3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012200644A DE102012200644A1 (en) | 2012-01-18 | 2012-01-18 | wrench |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2617526A1 EP2617526A1 (en) | 2013-07-24 |
EP2617526B1 true EP2617526B1 (en) | 2019-08-28 |
Family
ID=47594544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13151272.5A Active EP2617526B1 (en) | 2012-01-18 | 2013-01-15 | Wrench |
Country Status (4)
Country | Link |
---|---|
US (1) | US8925425B2 (en) |
EP (1) | EP2617526B1 (en) |
CA (1) | CA2801437A1 (en) |
DE (1) | DE102012200644A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014225916B4 (en) * | 2014-12-15 | 2016-07-14 | NUBIUS GROUP Präzisionswerkzeuge GmbH | Key with conical surface |
US9884409B2 (en) * | 2016-01-15 | 2018-02-06 | Zhe Jiang Yiyang Tool Manufacture Co., Ltd | Pipe wrench |
GB201704196D0 (en) * | 2017-03-16 | 2017-05-03 | Buchanan Nigel Alexander | Low profile line wrench |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US746705A (en) * | 1903-05-05 | 1903-12-15 | Charles N Hutchins | Pipe wrench or clamp. |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1539943A (en) * | 1921-11-17 | 1925-06-02 | Edgar E Greve | Pipe tongs |
US1524708A (en) * | 1923-11-26 | 1925-02-03 | Grant | Pipe or casing tongs |
US1730096A (en) * | 1927-01-25 | 1929-10-01 | Samuel T Smith | Pipe tongs |
US2180979A (en) * | 1939-03-23 | 1939-11-21 | Gen Electric | Hydraulic press |
US3097552A (en) * | 1961-09-28 | 1963-07-16 | Benjamin F Kelley | Pipe tongs |
US4616534A (en) | 1984-10-23 | 1986-10-14 | Park Sea C | Closed end wrench |
US6257098B1 (en) * | 1996-12-10 | 2001-07-10 | Paul F. Cirone | Article collation feature and method |
GB9907059D0 (en) * | 1999-03-29 | 1999-05-19 | Buchanan Nigel A | Smart spanner |
GB0814013D0 (en) | 2008-07-31 | 2008-09-10 | Smart Tools Ltd | Wrench socket |
US7913589B2 (en) * | 2008-11-17 | 2011-03-29 | Chen-Tsung Chen | Adjustable wrench that clamps a workpiece exactly and tightly |
DE202009006978U1 (en) | 2009-05-14 | 2009-07-23 | Fan, Chen Jun | wrench |
DE202009008148U1 (en) | 2009-06-12 | 2009-08-27 | Fan, Chen Jun | Adjustment key |
-
2012
- 2012-01-18 DE DE102012200644A patent/DE102012200644A1/en not_active Withdrawn
-
2013
- 2013-01-10 CA CA2801437A patent/CA2801437A1/en not_active Abandoned
- 2013-01-15 EP EP13151272.5A patent/EP2617526B1/en active Active
- 2013-01-17 US US13/743,683 patent/US8925425B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US746705A (en) * | 1903-05-05 | 1903-12-15 | Charles N Hutchins | Pipe wrench or clamp. |
Also Published As
Publication number | Publication date |
---|---|
EP2617526A1 (en) | 2013-07-24 |
US20130180365A1 (en) | 2013-07-18 |
DE102012200644A1 (en) | 2013-07-18 |
CA2801437A1 (en) | 2013-07-18 |
US8925425B2 (en) | 2015-01-06 |
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