EP0027183B1 - Wrench - Google Patents

Wrench Download PDF

Info

Publication number
EP0027183B1
EP0027183B1 EP80105567A EP80105567A EP0027183B1 EP 0027183 B1 EP0027183 B1 EP 0027183B1 EP 80105567 A EP80105567 A EP 80105567A EP 80105567 A EP80105567 A EP 80105567A EP 0027183 B1 EP0027183 B1 EP 0027183B1
Authority
EP
European Patent Office
Prior art keywords
ring
lever arm
support leg
pivoted
wrench
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80105567A
Other languages
German (de)
French (fr)
Other versions
EP0027183A2 (en
EP0027183A3 (en
Inventor
Johann Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wagner Paul-Heinz
Original Assignee
Wagner Paul-Heinz
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wagner Paul-Heinz filed Critical Wagner Paul-Heinz
Publication of EP0027183A2 publication Critical patent/EP0027183A2/en
Publication of EP0027183A3 publication Critical patent/EP0027183A3/en
Application granted granted Critical
Publication of EP0027183B1 publication Critical patent/EP0027183B1/en
Expired legal-status Critical Current

Links

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
    • 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
    • B25B17/00—Hand-driven gear-operated wrenches or screwdrivers
    • B25B17/02—Hand-driven gear-operated wrenches or screwdrivers providing for torque amplification
    • 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
    • B25B23/16—Handles

Definitions

  • the invention relates to a wrench with a rotationally fixed to a key socket Rigng, which is rotatably mounted on a support foot, a lever arm acting on the ring, which is articulated on the support foot and drives the ring via a force-increasing transmission, and at least one on the ring attached driver that engages the lever arm at a distance from its pivot point on the support leg.
  • a known wrench of this type (CH-A-402 770) has a support foot which can be placed against a stationary abutment and which carries a rotatably mounted ring which can be connected in a rotationally fixed manner to a key nut.
  • a lever arm engages the ring via a ratchet.
  • This lever arm has a radially protruding driver which is connected in an articulated manner to a lever arm via a slot guide.
  • the lever arm is a two-armed lever, the end of which is articulated on the support foot.
  • the driver can be fixed to the support foot with a blocking element.
  • the driver and the support foot are taken along without mutual pivoting.
  • the known wrench is complex and heavy.
  • the invention has for its object to provide a wrench of the type mentioned, which is structurally simplified and can be manufactured with less weight.
  • the lever arm When the lever arm is pivoted, the lever arm acts on the two drivers, which in turn are connected to the ring and rotate it.
  • the ring When the lever arm is pivoted around its articulation point, the ring makes a smaller angular rotation than the lever arm. This means that the torque exerted on the ring is greater than the torque applied to the lever arm. So there is a torque boost.
  • the structurally simple interaction between the lever arm and the drivers which are only pushed forward when the lever arm is pivoted.
  • a single driver is arranged on the side of the lever arm on the ring in the plane of the lever arm and is connected to the lever arm via a tension element.
  • the driver in a wrench of the type mentioned at the outset, consists of a first toothing element on which a second toothing element mounted on the support foot and firmly connected to the lever arm rolls in mutual engagement of the toothings.
  • the force or torque is amplified from the lever arm to the ring via a gear drive.
  • the first toothing element preferably consists of a toothing segment provided with an internal toothing, and the second toothing element is a pinion that is non-rotatably connected to the lever arm.
  • the wrench can be equipped with a conventional torque measuring device, which is expediently attached to the support foot.
  • the wrench has a ring 10 which is provided with a continuous hexagon opening 11 for inserting a key nut.
  • the ring 10 is rotatably mounted in a bore of a support leg 12 consisting of a flat iron. Its cylindrical bearing surface is delimited by an annular shoulder 13 and by a circlip 14 inserted into an annular groove. The ring 10 can thus be rotated in the opening of the support foot 12.
  • the ring 10 also has above the plate-shaped support foot 12 lugs 15, 16 which protrude like pliers from the main body of the ring 10.
  • the lever arm 17 In the plane of the lugs 15 and 16 there is the lever arm 17 which is mounted on a pin 18 protruding from the supporting foot 12.
  • the lever arm 17 can thus be pivoted parallel to the plane of the support foot 12 and in a plane running perpendicular to the axis of the ring 10.
  • the distance that the axis of the pin 18 has from the axis of the ring 10 or the opening 11 is smaller than the distance that the effective outer ends of the lugs 15 and 16 have from the axis of the ring 10 or the opening 11 .
  • the lever arm 17 has substantially parallel edges, but in the area of the lever 17 that is with the effective Ends of the approaches 15 and 16 cooperate, bulges 19, 20 have.
  • the lever arm 17 can be locked in relation to the support foot 12 for the purpose of turning it further. This takes place, for example, with a pin 21 which is inserted transversely through the lever arm 17 and can be inserted into a recess 22 of the support foot 12, so that the lever arm 17 and the support foot 12 are locked relative to one another.
  • the support foot 12 In order to be able to turn the wrench in the locked state, the support foot 12 must, of course, be removed from the stationary support (not shown). Since the hexagon bore 11 is continuous, the key nut according to FIG. 2 can be inserted into the hexagon bore either from the right or from the left.
  • the wrench is used in principle in the same way, but the lever arm 17 is rotated clockwise when the lock 21, 22 is released. In the last phase of tightening, the bulge 19 presses against the shoulder 16, so that torque is also amplified in this direction.
  • a freewheel can be arranged between the ring 10 and the key socket (not shown), which only allows the key socket to be carried in one direction of rotation.
  • FIGS. 3 and 4 likewise largely corresponds to the exemplary embodiment in FIGS. 1 and 2.
  • the ring has only a single extension 15 which lies in the same plane as the lever arm 17. This wrench is therefore only in one direction of rotation effective.
  • the end of the extension 15 is connected to the lever arm 17 via a joint member 27.
  • the articulated member 27 is a tab which at one end articulates on the end of the extension 15 and at the other end articulated on the lever arm 17. If the lever arm 17 is turned back (clockwise), the joint member 27 also pulls the ring 10 back over the extension 15. During this movement, the sleeve 26 is not rotated. Instead of the articulated member 27, another traction element could also be used.
  • the force is amplified via a gearwheel 30 which is non-rotatably connected to the lever arm 12 and which rolls on the internal toothing 31 of a toothing element 32 connected to the ring 10.
  • the toothing element 32 represents an arc around the axis of the ring 10. It overlaps the front end of the lever arm 17th
  • the axis 33 of the gear 30 is rotatably supported in a bore of the support foot 12.
  • the axis 33 protrudes through a bore at the front end of the support foot 12. In this bore, it is connected to the lever arm 17 in a rotationally fixed manner with a cross section 34.
  • the gear 30 is rotatably attached.
  • lever arm 17 If the lever arm 17 is pivoted about the axis 33, then it rotates the gearwheel 30 and this in turn rotates the toothing element 32. Because of the different pitch circle diameters, there is a strong reduction, so that the rotary movement which the ring 10 executes is significantly smaller than that Pivotal movement that the lever arm 17 has performed. This results in a torque increase.
  • the gear 30 need not be provided with a circumferential toothing, since only a part of the circumference of this gear is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

Die Erfindung betrifft einen Schraubenschlüssel mit einem drehfest mit einer Schlüsselnuss verbindbaren Rigng, der an einem Stützfuss drehbar gelagert ist, einem an dem Ring angreifenden Hebelarm, der an dem Stützfuss angelenkt ist und den Ring über eine kraftverstärkende Übersetzung antreibt, und mindestens einem an dem Ring befestigten Mitnehmer, der an dem Hebelarm im Abstand von dessen Anlenkpunkt am Stützfuss angreift.The invention relates to a wrench with a rotationally fixed to a key socket Rigng, which is rotatably mounted on a support foot, a lever arm acting on the ring, which is articulated on the support foot and drives the ring via a force-increasing transmission, and at least one on the ring attached driver that engages the lever arm at a distance from its pivot point on the support leg.

Ein bekannter Schraubenschlüssel dieser Art (CH-A-402 770) weist einen Stützfuss auf, der gegen ein ortsfestes Widerlager ansetzbar ist und einen drehbar gelagerten Ring trägt, der drehfest mit einer Schlüsselnuss verbindbar ist. An dem Ring greift über eine Ratsche ein Hebelarm an. Dieser Hebelarm weist einen radial abstehenden Mitnehmer auf, welcher über eine Schlitzführung gelenkig mit einem Hebelarm verbunden ist. Der Hebelarm ist ein zweiarmiger Hebel, dessen Ende an dem Stützfuss angelenkt ist. Bei einer Verschwenkung des Hebelarmes um seinen Anlenkpunkt am Stützfuss herum wird der Mitnehmer ebenfalls verschwenkt und infolge der Hebelübersetzung erfolgt eine Kraftverstärkung, wobei der Mitnehmer auf den Schlüsselkopf ein erhöhtes Drehmoment ausübt. Soll ohne Kraftverstärkung gearbeitet werden, dann kann der Mitnehmer an dem Stützfuss mit einem Blockierelement festgelegt werden. In diesem Fall werden bei einer Schwenkbewegung des Hebelarmes der Mitnehmer und der Stützfuss ohne gegenseitige Verschwenkung mitgenommen. Infolge der benötigten Gelenke und der doppelarmigen Ausführung des Stützfusses ist der bekannte Schraubenschlüssel aufwendig und schwergewichtig.A known wrench of this type (CH-A-402 770) has a support foot which can be placed against a stationary abutment and which carries a rotatably mounted ring which can be connected in a rotationally fixed manner to a key nut. A lever arm engages the ring via a ratchet. This lever arm has a radially protruding driver which is connected in an articulated manner to a lever arm via a slot guide. The lever arm is a two-armed lever, the end of which is articulated on the support foot. When the lever arm is pivoted about its articulation point on the support foot, the driver is also pivoted and, as a result of the lever transmission, the force is increased, the driver exerting an increased torque on the key head. If you want to work without power amplification, the driver can be fixed to the support foot with a blocking element. In this case, when the lever arm is pivoted, the driver and the support foot are taken along without mutual pivoting. As a result of the required joints and the double-arm design of the support leg, the known wrench is complex and heavy.

Der Erfindung liegt die Aufgabe zugrunde, einen Schraubenschlüssel der eingangs genannten Art zu schaffen, der konstruktiv vereinfacht ist und mit geringerem Gewicht hergestellt werden kann.The invention has for its object to provide a wrench of the type mentioned, which is structurally simplified and can be manufactured with less weight.

Zur Lösung dieser Aufgabe ist gemäss einer ersten Variante der Erfindung vorgesehen, dass an dem Ring in der Ebene des Hebelarmes zwei Mitnehmer beidseitig des Hebelarmes angeordnet sind, die den Hebelarm im Abstand von dessem Anlenkpunkt am Stützfuss umgreifen.To achieve this object, according to a first variant of the invention it is provided that on the ring in the plane of the lever arm two drivers are arranged on both sides of the lever arm, which grip around the lever arm at a distance from its articulation point on the support foot.

Bei einer Verschwenkung des Hebelarmes wirkt der Hebelarm auf die beiden Mitnehmer ein, die ihrerseits mit dem Ring verbunden sind und diesen drehen. Bei der Schwenkung des Hebelarmes um seinen Anlenkpunkt herum führt der Ring eine kleinere Winkeldrehung aus als der Hebelarm. Dies bedeutet, dass das auf den Ring ausgeübte Drehmoment grösser ist als das an dem Hebelarm aufgebrachte Drehmoment. Es findet also eine Drehmomentenverstärkung statt. Das konstruktiv einfache Zusammenwirken zwischen dem Hebelarm und den Mitnehmern, die bei einer Schwenkbewegung des Hebelarmes lediglich fortgedrückt werden.When the lever arm is pivoted, the lever arm acts on the two drivers, which in turn are connected to the ring and rotate it. When the lever arm is pivoted around its articulation point, the ring makes a smaller angular rotation than the lever arm. This means that the torque exerted on the ring is greater than the torque applied to the lever arm. So there is a torque boost. The structurally simple interaction between the lever arm and the drivers, which are only pushed forward when the lever arm is pivoted.

Gemäss einer zweiten Variante der Erfindung ist vorgesehen, dass an dem Ring in der Ebene des Hebelarmes ein einziger Mitnehmer seitlich vom Hebelarm angeordnet und mit dem Hebelarm über ein Zugelement verbunden ist.According to a second variant of the invention, it is provided that a single driver is arranged on the side of the lever arm on the ring in the plane of the lever arm and is connected to the lever arm via a tension element.

Bei einer Schwenkbewegung des Hebelarmes in der einen Drehrichtung drückt der Hebelarm den Mitnehmer seitlich fort, so dass der Ring gedreht wird. Bei einer Drehung des Hebelarms in Gegenrichtung bewirkt das Zugelement die Zurückführung des Mitnehmers.When the lever arm pivots in one direction of rotation, the lever arm pushes the driver laterally, so that the ring is rotated. When the lever arm rotates in the opposite direction, the pulling element brings the driver back.

Gemäss einer dritten Variante der Erfindung ist bei einem Schraubenschlüssel der eingangs genannten Art vorgesehen, dass der Mitnehmer aus einem ersten Verzahnungselement besteht, an dem ein an dem Stützfuss gelagertes und mit dem Hebelarm fest verbundenes zweites Verzahnungselement in gegenseitigem Eingriff der Verzahnungen abrollt.According to a third variant of the invention, in a wrench of the type mentioned at the outset, the driver consists of a first toothing element on which a second toothing element mounted on the support foot and firmly connected to the lever arm rolls in mutual engagement of the toothings.

In diesem Fall erfolgt die Kraftverstärkung bzw. Drehmomentenverstärkung von dem Hebelarm auf den Ring über einen Zahnradantrieb. Vorzugsweise besteht das erste Verzahnungselement aus einem mit einer Innenverzahnung versehenen Verzahnungssegment und das zweite Verzahnungselement ist ein drehfest mit dem Hebelarm verbundenes Ritzel.In this case, the force or torque is amplified from the lever arm to the ring via a gear drive. The first toothing element preferably consists of a toothing segment provided with an internal toothing, and the second toothing element is a pinion that is non-rotatably connected to the lever arm.

Der Schraubenschlüssel kann zur Messung des Schraubmomentes mit einer üblichen Drehmomentmesseinrichtung ausgestattet werden, die zweckmässigerweise an dem Stützfuss angebracht wird.To measure the tightening torque, the wrench can be equipped with a conventional torque measuring device, which is expediently attached to the support foot.

Im folgenden werden unter Bezugnahme auf die Figuren einige Ausführungsbeispiele der Erfindung näher erläutert.Some exemplary embodiments of the invention are explained in more detail below with reference to the figures.

Es zeigen:

  • Figuren 1 und 2 eine Draufsicht und einen Längsschnitt einer ersten Ausführungsform,
  • Figuren 3 und 4 eine Draufsicht und einen Längsschnitt einer zweiten Ausführungsform, und
  • Figuren 5 und 6 eine Draufsicht und einen Längsschnitt einer dritten Ausführungsform.
Show it:
  • FIGS. 1 and 2 show a top view and a longitudinal section of a first embodiment,
  • Figures 3 and 4 are a plan view and a longitudinal section of a second embodiment, and
  • Figures 5 and 6 are a plan view and a longitudinal section of a third embodiment.

Bei dem Ausführungsbeispiel nach den Figuren 1 und 2 weist der Schraubenschlüssel einen Ring 10 auf, der mit einer durchgehenden Sechskantöffnung 11 zum Einstecken einer Schlüsselnuss versehen ist. Der Ring 10 ist in einer Bohrung eines aus einem Flacheisen bestehenden Stützfusses 12 drehbar gelagert. Seine zylindrische Lagerfläche ist durch eine Ringschulter 13 und durch einen in eine Ringnut eingesetzten Sicherungsring 14 begrenzt. Der Ring 10 kann somit in der Öffnung des Stützfusses 12 gedreht werden.In the exemplary embodiment according to FIGS. 1 and 2, the wrench has a ring 10 which is provided with a continuous hexagon opening 11 for inserting a key nut. The ring 10 is rotatably mounted in a bore of a support leg 12 consisting of a flat iron. Its cylindrical bearing surface is delimited by an annular shoulder 13 and by a circlip 14 inserted into an annular groove. The ring 10 can thus be rotated in the opening of the support foot 12.

Der Ring 10 weist ferner oberhalb des plattenförmigen Stützfusses 12 Ansätze 15, 16 auf, die zangenartig von dem Hauptkörper des Ringes 10 abstehen. In der Ebene der Ansätze 15 und 16 befindet sich der Hebelarm 17, der an einem von dem Stützfuss 12 abstehenden Zapfen 18 gelagert ist. Der Hebelarm 17 ist somit parallel zu der Ebene der Stützfusses 12 und in einer senkrecht zur Achse des Ringes 10 verlaufenden Ebene schwenkbar. Der Abstand, den die Achse des Zapfens 18 von der Achse des Ringes 10 bzw. der Öffnung 11 hat, ist kleiner als der Abstand, den die wirksamen äusseren Enden der Ansätze 15 und 16 von der Achse des Ringes 10 bzw. der Öffnung 11 haben. Der Hebelarm 17 hat im wesentlichen parallele Kanten, die jedoch in demjenigen Bereich des Hebels 17, der mit den wirksamen Enden der Ansätze 15 und 16 zusammenarbeitet, Ausbauchungen 19, 20 aufweisen.The ring 10 also has above the plate-shaped support foot 12 lugs 15, 16 which protrude like pliers from the main body of the ring 10. In the plane of the lugs 15 and 16 there is the lever arm 17 which is mounted on a pin 18 protruding from the supporting foot 12. The lever arm 17 can thus be pivoted parallel to the plane of the support foot 12 and in a plane running perpendicular to the axis of the ring 10. The distance that the axis of the pin 18 has from the axis of the ring 10 or the opening 11 is smaller than the distance that the effective outer ends of the lugs 15 and 16 have from the axis of the ring 10 or the opening 11 . The lever arm 17 has substantially parallel edges, but in the area of the lever 17 that is with the effective Ends of the approaches 15 and 16 cooperate, bulges 19, 20 have.

Die Wirkungsweise des Schraubenschlüssels nach den Figuren 1 und 2 ist folgende:The operation of the wrench according to Figures 1 and 2 is as follows:

Soll der zu drehende Schraubenkopf z. B. zum Lösen der Schraube mit grossem Drehmoment im Gegenuhrzeigensinn gedreht werden, dann wird der Stützfuss 12 mit seiner in Figur 1 rechts dargestellten Seite gegen eine feste Abstützung gelegt. Der Hebelarm 17 wird im Gegenuhrzeigersinn gedreht. Dabei drückt die Ausbauchung 20 gegen den Ansatz 15 des Ringes 10, wodurch auf den Ring 10 ein Drehmoment im Gegenuhrzeigensinn ausgeübt wird. Dieses Drehmoment ist infolge des Abstandes, den der Zapfen 18 von der Achse des Ringes 10 hat, erheblich grösser als das am Hebelarm 17 z. B. manuell aufgebrachte Drehmoment.If the screw head to be rotated z. B. to loosen the screw with a large torque counterclockwise, then the support leg 12 is placed with its side shown in Figure 1 on the right against a fixed support. The lever arm 17 is rotated counterclockwise. The bulge 20 presses against the shoulder 15 of the ring 10, whereby a torque is exerted on the ring 10 in the counterclockwise direction. This torque is due to the distance that the pin 18 from the axis of the ring 10 is significantly larger than that on the lever arm 17 z. B. manually applied torque.

Wenn die Schraube gelöst ist, kann zum Zwecke des leichteren Weiterdrehens der Hebelarm 17 in Bezug auf den Stützfuss 12 arretiert werden. Dies geschieht beispielsweise mit einem Zapfen 21, der quer durch den Hebelarm 17 hindurchgesteckt ist und in eine Ausnehmung 22 des Stützfusses 12 eingesteckt werden kann, so dass der Hebelarm 17 und der Stützfuss 12 relativ zueinander verriegelt sind. Um den Schraubenschlüssel im verriegelten Zustand drehen zu können, muss der Stützfuss 12 natürlich von der (nicht dargestellten) ortsfesten Abstützug entfernt werden. Da die Sechskantbohrung 11 durchgehend ist, kann die Schlüsselnuss gemäss Figur 2 wahlweise von rechts oder von links in die Sechskantbohrung eingesteckt werden.When the screw is loosened, the lever arm 17 can be locked in relation to the support foot 12 for the purpose of turning it further. This takes place, for example, with a pin 21 which is inserted transversely through the lever arm 17 and can be inserted into a recess 22 of the support foot 12, so that the lever arm 17 and the support foot 12 are locked relative to one another. In order to be able to turn the wrench in the locked state, the support foot 12 must, of course, be removed from the stationary support (not shown). Since the hexagon bore 11 is continuous, the key nut according to FIG. 2 can be inserted into the hexagon bore either from the right or from the left.

Soll die Schraube festgezogen werden, wird der Schraubenschlüssel prinzipiell in derselben Weise benutzt, wobei jedoch der Hebelarm 17 bei gelöster Verriegelung 21, 22 im Uhrzeigersinn gedreht wird. Dabei drückt in der letzten Phase des Festziehens die Ausbauchnung 19 gegen den Ansatz 16, so dass auch in dieser Richtung eine Drehmomentverstärkung erfolgt.If the screw is to be tightened, the wrench is used in principle in the same way, but the lever arm 17 is rotated clockwise when the lock 21, 22 is released. In the last phase of tightening, the bulge 19 presses against the shoulder 16, so that torque is also amplified in this direction.

Soll der Schraubenschlüssel als Ratschenschlüssel eingesetzt werden, dann kann zwischen dem Ring 10 und der (nicht dargestellten) Schlüsselnuss ein Freilauf angeordnet werden, der die Mitnahme der Schlüsselnuss nur in der einen Drehrichtung ermöglicht.If the wrench is to be used as a ratchet wrench, then a freewheel can be arranged between the ring 10 and the key socket (not shown), which only allows the key socket to be carried in one direction of rotation.

Das Ausführungsbeispiel der Figuren 3 und 4 entspricht ebenfalls weitgegend dem Ausführungsbeispiel der Figuren 1 und 2. Im Unterschied dazu weist der Ring jedoch nur einen einzigen Ansatz 15 auf, der in derselben Ebene liegt wie der Hebelarm 17. Dieser Schraubenschlüssel ist daher nur in einer Drehrichtung wirksam. Zwischen dem Ring 10 und einer Hülse 26 zum Einstecken der Schlüsselnuss befindet sich ein Freilauf 25, der es ermöglicht, den Ring 10 leer zurückzudrehen, während die Hülse 26 mit der Schraube verbunden bleibt. Erfolgt die Drehung der Schraube dagegen gemäss Figur 3 im Gegenuhrzeigensinn, dann nimmt der Ring 10 über den Freilauf 25 die Hülse 26 mit.The exemplary embodiment in FIGS. 3 and 4 likewise largely corresponds to the exemplary embodiment in FIGS. 1 and 2. In contrast to this, however, the ring has only a single extension 15 which lies in the same plane as the lever arm 17. This wrench is therefore only in one direction of rotation effective. There is a freewheel 25 between the ring 10 and a sleeve 26 for inserting the key nut, which allows the ring 10 to be turned back empty while the sleeve 26 remains connected to the screw. If, on the other hand, the screw is rotated counterclockwise according to FIG. 3, the ring 10 takes the sleeve 26 along with the freewheel 25.

Um den Ring 10 leer zurückdrehen zu können, ist das Ende des Ansatzes 15 über ein Gelenkglied 27 mit dem Hebelarm 17 verbunden. Das Gelenkglied 27 ist eine Lasche, die mit ihrem einen Ende gelenkig an dem Ende des Ansatzes 15 und mit ihrem anderen Ende gelenking an dem Hebelarm 17 angreift. Wird der Hebelarm 17 (im Uhrzeigersinn) zurückgedreht, dann zieht das Gelenkglied 27 über den Ansatz 15 den Ring 10 ebenfalls zurück. Bei dieser Bewegung wird die Hülse 26 nicht mitgedreht. Anstelle des Gelenkgliedes 27 könnte auch ein anderes Zugorgan benutzt werden.In order to be able to turn the ring 10 back empty, the end of the extension 15 is connected to the lever arm 17 via a joint member 27. The articulated member 27 is a tab which at one end articulates on the end of the extension 15 and at the other end articulated on the lever arm 17. If the lever arm 17 is turned back (clockwise), the joint member 27 also pulls the ring 10 back over the extension 15. During this movement, the sleeve 26 is not rotated. Instead of the articulated member 27, another traction element could also be used.

Bei dem Ausführungsbeispiel der Figuren 5 und 6 erfolgt die Kraftverstärkung über ein drehfest mit dem Hebelarm 12 verbundenes Zahnrad 30, das auf der Innenverzahnung 31 eines mit dem Ring 10 verbundenen Verzahnungselementes 32 abrollt. Das Verzahnungselement 32 stellt einen Kreisbogen um die Achse des Ringes 10 herum dar. Es überlagert das vordere Ende des Hebelarmes 17.In the exemplary embodiment in FIGS. 5 and 6, the force is amplified via a gearwheel 30 which is non-rotatably connected to the lever arm 12 and which rolls on the internal toothing 31 of a toothing element 32 connected to the ring 10. The toothing element 32 represents an arc around the axis of the ring 10. It overlaps the front end of the lever arm 17th

Die Achse 33 des Zahnrades 30 ist in einer Bohrung des Stützfusses 12 drehbar gelagert. Die Achse 33 ragt durch eine Bohrung am vorderen Ende des Stützfusses 12 hindurch. In dieser Bohrung ist sie mit einem Querschnitt 34 drehfest mit dem Hebelarm 17 verbunden. An dem oberen Ende der Achse 33 ist das Zahnrad 30 drehfest angebracht.The axis 33 of the gear 30 is rotatably supported in a bore of the support foot 12. The axis 33 protrudes through a bore at the front end of the support foot 12. In this bore, it is connected to the lever arm 17 in a rotationally fixed manner with a cross section 34. At the upper end of the axis 33, the gear 30 is rotatably attached.

Wird der Hebelarm 17 um die Achse 33 herumgeschwenkt, dann dreht er das Zahnrad 30 und dieses dreht seinerseits das Verzahnungselement 32. Wegen der unterschiedlichen Teilkreisdurchmesser findet eine starke Untersetzung statt, so dass die Drehbewegung, die der Ring 10 ausführt, wesentlich kleiner ist als die Schwenkbewegung, die der Hebelarm 17 ausgeführt hat. Dadurch erfolgt eine Drehmomentenverstärkung.If the lever arm 17 is pivoted about the axis 33, then it rotates the gearwheel 30 and this in turn rotates the toothing element 32. Because of the different pitch circle diameters, there is a strong reduction, so that the rotary movement which the ring 10 executes is significantly smaller than that Pivotal movement that the lever arm 17 has performed. This results in a torque increase.

Das Zahnrad 30 braucht nicht mit einer umlaufenden Verzahnung versehen zu sein, da nur ein Teil des Umfangs dieses Zahnrades benutzt wird.The gear 30 need not be provided with a circumferential toothing, since only a part of the circumference of this gear is used.

Claims (4)

1. Wrench with a ring (10) connectible fast against relative rotation with a key member and pivoted on a support leg (12), a lever arm (17) which acts on the ring (10), is pivoted to the support leg (12) and actuates the ring (10) with mechanical advantage, and a driven member (15, 16; 15, 32) which is fixed to the ring (10) and acts on the lever arm (17) at a spacing from the fulcrum (18, 33) of the latter on the support leg (12), characterized in that there are arranged on the ring, one to each side of the lever arm (17) and in the plane of the latter, two driven members (15, 16) which embrace the lever arm at a spacing from the fulcrum (18) of the latter on the support leg (12).
2. Wrench with a ring (10) connectible fast against relative rotation with a key member and pivoted on a support leg (12), a lever arm (17) which acts on the ring (10), is pivoted to the support leg (12) and actuates the ring (10) with mechanical advantage, and a driven member (15, 16; 15, 32) which is fixed to the ring (10) and acts on the lever arm (17) at a spacing from the fulcrum (18, 33) of the latter on the support leg (12), characterized in that there is arranged on the ring (10) in the plane of the lever arm and laterally of the latter a single driven member (15) which is connected with the lever arm by way of a tension member (27).
3. Wrench with a ring (10) connectible fast against relative rotation with a key member and pivoted on a support leg (12), a lever arm (17) which acts on the ring (10), is pivoted to the support leg (12) and actuates the ring (10) with mechanical advantage, and a driven member (15, 16; 15, 32) which is fixed to the ring (10) and acts on the lever arm (17) at a spacing from the fulcrum (18, 33) of the latter on the support leg (12), characterized in that the driven member comprises a first toothed member (32) mutually in mesh with a second toothed member (30) which rolls therealong, is supported on the support leg (12), and is rigidly connected with the lever arm (17).
4. Wrench according to claim 3, characterized in that the first toothed member (32) comprises a toothed sector with an internal toothing (31), and that the second toothed member (30) is a pinion connected fast against relative rotation with the lever arm (17).
EP80105567A 1979-10-10 1980-09-17 Wrench Expired EP0027183B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2941045 1979-10-10
DE2941045A DE2941045C2 (en) 1979-10-10 1979-10-10 Wrench

Publications (3)

Publication Number Publication Date
EP0027183A2 EP0027183A2 (en) 1981-04-22
EP0027183A3 EP0027183A3 (en) 1981-09-02
EP0027183B1 true EP0027183B1 (en) 1983-10-12

Family

ID=6083145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105567A Expired EP0027183B1 (en) 1979-10-10 1980-09-17 Wrench

Country Status (4)

Country Link
US (1) US4377955A (en)
EP (1) EP0027183B1 (en)
JP (1) JPS5656390A (en)
DE (1) DE2941045C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2269772A2 (en) 2009-07-03 2011-01-05 Josef Bättig Ratchet wrench with reinforced torque

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546676A (en) * 1984-04-16 1985-10-15 Kiefer Tool Co., Inc. Torque-multiplying hand wrench
DE3504315C1 (en) * 1985-02-08 1986-10-23 Karl Dipl.-Ing.(FH) 4040 Neuss Weinhold Device for releasing wheel nuts and wheel bolts in motor vehicles
AT393152B (en) * 1986-11-25 1991-08-26 Steyr Daimler Puch Ag DEVICE FOR TURNING THE CAMSHAFT OF A PISTON PISTON INTERNAL COMBUSTION ENGINE IN ITS BASIC REFERENCE TO THE CRANKSHAFT ROTATIONAL POSITION
KR890701924A (en) * 1987-10-22 1989-12-22 원본미기재 Variable torque deployment
EP0323350B1 (en) * 1987-12-28 1993-10-20 Shin-Etsu Handotai Company Limited Method for fire extinguishment of hardly extinguishable dangerous material
ES2026791A6 (en) * 1990-11-13 1992-05-01 Lopez Martinez Norberto Dinamogenic apparatus for tightening-loosening bolts or nuts of vehicle wheels
SE509414C2 (en) * 1997-05-26 1999-01-25 Ingvar Hejninger Hand tools with support arm and locking mechanism and a method for loosening fasteners
KR101144006B1 (en) * 2011-02-11 2012-05-15 미주오토텍주식회사 The spanner
TW201417960A (en) * 2012-11-06 2014-05-16 Ji-Lin He Wrench having two locking operational manners
US10399214B2 (en) * 2014-12-17 2019-09-03 Stanley D. Winnard Ratchet wrench

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH402770A (en) * 1961-11-22 1965-11-15 Carl Walter Schraubwerkzeug Fa Screwing tool
DE1603842A1 (en) * 1967-09-07 1971-09-09 Eggert Ohg Jakob H Wrench

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1101022A (en) * 1913-06-27 1914-06-23 Howard R Adams Wrench.
DE1013488B (en) * 1955-09-06 1957-08-08 Wagner & Co Werkzeugmaschinenf Device for exercising large torques on adjusting spindles or nuts of clamping devices and. like
US2875658A (en) * 1957-12-12 1959-03-03 Benjamin Howard Insulated lever-means for a ratchet wrench
US2972919A (en) * 1959-03-03 1961-02-28 Alfred R Stalkup Reversible ratchet wrench
US3019681A (en) * 1959-11-20 1962-02-06 Everett D Grissom Reversible ratchet wrench
US3447404A (en) * 1967-09-27 1969-06-03 Gaston Lachance Socket wrench with lever operated pawl means and a thrust block for said pawl means
US3557644A (en) * 1968-11-18 1971-01-26 Gerrett W Gregory Squeeze action wrench
US3616714A (en) * 1969-08-25 1971-11-02 Gerrett W Gregory Rack and pinion squeeze action wrench
US3789707A (en) * 1972-10-24 1974-02-05 J Belknap Two speed wrench

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH402770A (en) * 1961-11-22 1965-11-15 Carl Walter Schraubwerkzeug Fa Screwing tool
DE1603842A1 (en) * 1967-09-07 1971-09-09 Eggert Ohg Jakob H Wrench

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2269772A2 (en) 2009-07-03 2011-01-05 Josef Bättig Ratchet wrench with reinforced torque

Also Published As

Publication number Publication date
US4377955A (en) 1983-03-29
EP0027183A2 (en) 1981-04-22
JPS5656390A (en) 1981-05-18
DE2941045A1 (en) 1981-06-04
EP0027183A3 (en) 1981-09-02
DE2941045C2 (en) 1981-11-19

Similar Documents

Publication Publication Date Title
DE68904541T2 (en) ACTIVE JAW FOR A TONGUE.
DE1026134B (en) Device for releasable securing of wheels against axial displacement
EP0027183B1 (en) Wrench
DE2847478C2 (en) Device for adjusting the closing distance between the slide and the machine bed of a press
DE2746632A1 (en) HYDRAULIC WRENCH
DE1945562C3 (en) Tool for assembling a threaded insert
DE2513974A1 (en) RESET DEVICE FOR A HYDRAULIC VEHICLE STEERING DEVICE
DE3525981A1 (en) SWIVELING DEVICE FOR A SPIN CHAIN UNIT OF A MOTOR VEHICLE
DE3335196C1 (en) Clamping device for toothed workpieces
DE2654466C2 (en) Power wrench
DE69404249T2 (en) WRENCH, IN PARTICULAR TO RELEASE OR TIGHTEN WHEEL NUTS OR THE LIKE
DE3034133C2 (en) Planetary gear
DE102017000666A1 (en) Traction help for the tire of a motor vehicle
CH669541A5 (en)
DE102006016350A1 (en) Tool for nuts especially wheel nuts has integral planetary gearing and with plug fit sockets
DE3508938C1 (en) Forcing device for axially forcing a pin from a bore
DE69129799T2 (en) HYDRAULICALLY OPERATED WRENCH
DE2756387A1 (en) DRIVE ARRANGEMENT
DE3334618A1 (en) HYDRAULIC WRENCH WITH ROLL
DE4118578C2 (en) Connection for twin wheels on tractors
DE2022610C3 (en) Universal key
DE3413284C1 (en) Spanner with hand-driven screw transmission
DE2853261C2 (en) Wheel wrenches for vehicle wheels
DE3504315C1 (en) Device for releasing wheel nuts and wheel bolts in motor vehicles
DE3309803A1 (en) Ratchet wrench

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): FR GB IT

17P Request for examination filed

Effective date: 19811029

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19831012

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19890929

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890930

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900917

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910530

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST