EP2385891B1 - Pliers for establishing a sliding-sleeve connection - Google Patents

Pliers for establishing a sliding-sleeve connection Download PDF

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Publication number
EP2385891B1
EP2385891B1 EP10700836A EP10700836A EP2385891B1 EP 2385891 B1 EP2385891 B1 EP 2385891B1 EP 10700836 A EP10700836 A EP 10700836A EP 10700836 A EP10700836 A EP 10700836A EP 2385891 B1 EP2385891 B1 EP 2385891B1
Authority
EP
European Patent Office
Prior art keywords
ratchet wheel
pliers according
guide pin
pliers
jaw
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.)
Not-in-force
Application number
EP10700836A
Other languages
German (de)
French (fr)
Other versions
EP2385891A2 (en
Inventor
Ralf Legler
Horst Hofmann
Georg Holland-Moritz
Thomas Wagner
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.)
Rennsteig Werkzeuge GmbH
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
Rennsteig Werkzeuge GmbH
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 Rehau AG and Co, Rennsteig Werkzeuge GmbH filed Critical Rehau AG and Co
Publication of EP2385891A2 publication Critical patent/EP2385891A2/en
Application granted granted Critical
Publication of EP2385891B1 publication Critical patent/EP2385891B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/14—Locking means
    • B25B7/16—Locking means combined with means for tightening the operating arms of jaws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit

Definitions

  • the invention relates to a pair of pliers for producing a sliding sleeve connection according to the preamble of claim 1.
  • a pair of pliers is example, from the JP 2007 175820 A known.
  • Generic pliers or tools are used to connect plastic pipes with fittings.
  • a sliding sleeve is first pushed over the plastic pipe to be connected and then widened its end.
  • the flared end of the fitting is inserted and then by pushing the sliding sleeve on the plastic tube firmly and tightly connected to this.
  • the voltage state generated by the power transmission is initially maintained until the pawl is disabled by the action of a spring lever and goes out of action.
  • the spring member before or after the last working or pressing stroke, the spring member must be tensioned to put the pawl in readiness to release.
  • the clamping voltage on the pawl is released and disengaged, releasing the return path for the movable clevis.
  • the lifting of the pawl can be triggered even before the end of the sliding sleeve position, so that it is not ensured that the pressure was completed. Instead, if the pressure is advanced to the last possible stroke, disengagement of the pawl may present considerable difficulties due to the persistent stress.
  • Another system is for example from the DE 103 35 519 A1 known, in which the jaws can be moved towards each other via a screw mechanism.
  • the screw system has the disadvantage that it is relatively time-consuming to first make the clamp connection and then to loosen the device again and put it in the initial state. In addition, it is possible here to end the pressing unintentionally prematurely, since there is no enforcement report on the proper compression.
  • the US 5,758,729 A describes a pair of pliers with an integrated electric motor to increase the propulsive force on the forceps jaws during their normal use.
  • the advance of the movable jaw is done via a toggle whose extension is initiated via a cam.
  • the cam is driven by the electric motor.
  • a ring impact stapler is known.
  • the proposed there rack construction allows a quick approach of the jaws to the connector and a quick release at the end of the work.
  • an adjustable in two positions latch is provided which allows the disengagement of the pinion from the rack.
  • the JP 2007 175820 A discloses a pair of pliers for producing a sliding sleeve connection The drive of the mutually movable jaws by means of a crank mechanism.
  • a simple crank drive is realized by a slot in a movable part by a bolt mounted on the ratchet wheel is guided.
  • a toggle action and opening during further rotation of the ratchet wheel is not realized here.
  • the WO 87/07553 A1 relates to a hand tool, in which a reciprocating piston is slidably mounted in the fixed pliers part. This is operated by a crank mechanism. After passing through a complete stroke, the engagement of the pawl is interrupted in the ratchet, so that a provision of the piston takes place.
  • the invention has for its object to provide a pliers for producing a sliding sleeve connection, which after completion of pressing, i. after passing through a complete press stroke, a simple removal of the forceps from the connection made possible.
  • the pliers should avoid operating errors, so it should not be open before the pressing process.
  • a pliers according to the invention for producing a sliding sleeve connection comprises two mutually movable jaws, of which a first jaw is mounted in a fixed pliers part and a second jaw is arranged on a guide pin axially displaceable in the fixed pliers part.
  • the jaws are used to hold the pipe parts to be connected, on the one hand the sliding sleeve and the other part of the fitting.
  • the jaws carry in a known manner a U-shaped recess which is adapted to the dimension of the parts to be pressed.
  • the jaws are movable parallel to each other. But it is also conceivable that the jaws are pivoted about a distant bearing point.
  • the guide pin is drivingly connected via a crank mechanism with a ratchet wheel rotatably mounted in the fixed pliers part.
  • the crank mechanism acts such that at an imaginary continuous rotation of the ratchet wheel of the guide pin would constantly reciprocated linearly.
  • the crank mechanism comprises the ratchet wheel and a pressure lever.
  • the pressure lever is connected at one end to an eccentrically arranged on the ratchet wheel side bearing and pivotally connected at its other end to the second jaw opposite end of the guide pin.
  • the guide pin is first displaced in the closing direction, i. the cheeks move towards each other. After reaching a dead center position of the pressure lever takes place during further rotation of the ratchet wheel in the same direction, a return displacement of the guide pin in the opening direction.
  • This crank mechanism can also be simply mirrored.
  • the advantage of the invention is to be seen in particular in the fact that in a further actuation of the forceps after completion of the complete stroke automatically a disassembly movement / Opening the jaws so that a simple release of the pliers from the finished connection is possible. It is also advantageous that the pliers do not allow incorrect operation, because they can not be opened before passing through the dead center.
  • crank mechanism Another advantage of the use of the crank mechanism is the fact that a force for performing the press connection is applied by the action of the extending toggle lever, which increases with continuous closure of the jaws. That the gear ratio between handle movement and jaw movement changes during pressing to provide higher forces in the final stage of the pressing.
  • the ratchet wheel is actuated by means of a handle pivotally mounted on the fixed pliers part.
  • a feed pawl is rotatably supported in the handle and urged toward the ratchet wheel with respect to the fixed pliers part by means of a spring.
  • the feed pawl has a pawl tooth, which engages in the toothing of the ratchet wheel and causes a rotation of the ratchet wheel upon actuation of the handle.
  • the pliers also has a pawl, which is pivoted by a spring force in the ratchet wheel and prevents reverse rotation of the ratchet wheel on re-actuation of the handle, as long as the feed pawl is disengaged.
  • a power transmission ratio of the crank mechanism can be made variable by its geometry.
  • a favorable power transmission ratio it is possible to provide a pair of pliers for a one-hand operation.
  • the guide pin is supported and guided on both sides in the fixed pliers part by means of rollers.
  • a return spring is arranged between the ratchet wheel and the guide pin, which forces a reset of the guide pin in its initial position (open position of the jaws) in load-free switched ratchet wheel.
  • a first embodiment of a pliers according to the invention for producing a sliding sleeve connection is shown.
  • the pliers has in a known manner two parallel mutually movable jaws 01, 02 for receiving pipe parts to be joined.
  • the first jaw 01 is mounted in a fixed pliers part 03.
  • the first jaw 01 is preferably fastened by means of a plug pin 04 releasably on the fixed pliers part 03. This allows different jaws to be used to hold various fittings in the fixed pliers part.
  • the second jaw 02 is attached to a first free end of a guide pin 06, the first jaw 01 opposite.
  • the guide pin 06 is slidably mounted in the fixed pliers part 03.
  • the support of the guide pin 06 in the fixed pliers part 03 is preferably carried out by means of rollers 07 which are provided on both sides of a displacement axis 08 at an axial distance from each other.
  • the second jaw 02 may have a plurality of receptacles 05 for different fittings or sliding sleeves. In order to bring the matching receptacle 05 in the working position, the second jaw 02 is preferably arranged pivotably about the displacement axis 08.
  • the guide pin 06 is connected via a crank drive with a ratchet wheel 09.
  • the crank mechanism comprises the ratchet wheel 09 and a pressure lever 11, which is pivotally mounted with its one end in a wheel-side bearing 12 and with its other end in a bolt-side bearing 13.
  • the wheel-side bearing 12 is arranged eccentrically on the ratchet wheel 09.
  • the bolt-side bearing 13 is provided at the end facing away from the jaw 02 of the guide pin 06.
  • a pawl 21 is further provided, which engages to prevent rotation of the ratchet wheel 09 against the direction of rotation 14 in the ratchet wheel 09.
  • the distance between the jaws and the realizable stroke are chosen so that the compression is completed at the latest when reaching a dead center position. If the ratchet wheel 09 by further strokes of the handle 17 on the in the Fig. 1 shown dead center position, in which the bearings 12, 13 and the center of the ratchet wheel lie on a straight line, away rotated further, there is a movement of the pressure lever 11 beyond the dead center and thereby a movement of the guide pin in the opening direction 22, in which the jaws 01, 02 move away from each other. Suffice one or a few strokes with the handle 17 to achieve a solution of the jaws 01, 02 of the produced press connection and remove the pliers from the connected pipe.
  • the ratchet wheel 09 is switched load-free and the guide pin 06 is moved to its starting position (wide open jaws). This is done automatically with a disengaged feed and pawl by a return spring 24 which rotates the ratchet wheel 09 in a starting position.
  • the feed pawl 18 and the pawl 21 each have for the actuation an operating portion that protrude beyond the fixed tong part 03.
  • the actuating sections are positioned opposite each other so that they can be operated simultaneously with one hand.
  • the return spring acts directly on the feed pin 06 a.
  • a second fixed handle 23 is also provided for actuating the pliers on the fixed pliers part 03.
  • the power transmission ratio of the crank mechanism can be selected such that a one-handed operation of the pliers is possible. It will be necessary then several strokes, but with reduced effort.
  • the advantage is that the pliers can be equipped with small handles, which in turn is favorable for use in hard to reach places.
  • the force transmission ratio of the crank mechanism is determined by the ratio of the radius r of the ratchet wheel 09 to the distance a of the bearing 12 from the pivot point of the ratchet wheel 09.
  • the ratchet wheel 09 can be actuated directly via a rotary knob 25. Although no great forces can be applied by way of the rotary knob 25, the jaws can thus be brought into a position in which they rest essentially without force on the fitting or sliding sleeve.
  • the knob 25 can also be used for the fast complete opening of the jaws, as soon as they are de-energized.
  • Fig. 2 shows a second preferred embodiment of the forceps according to the invention.
  • This pliers works in principle according to the principle described above. Some constructive differences are explained below.
  • the first jaw 31 is in contrast to the embodiment described above rotatably mounted on the fixed pliers part 03.
  • the jaw 31 is designed as a multi-jaw and has in this embodiment two receiving areas 32 for receiving various fittings. By rotating the jaw 31 180 ° about a rotation axis 33, the recording area to be used can be selected.
  • the first jaw can also be revolver-like provided with even more receiving areas for the usual fitting sizes, so that it can be dispensed with the separate entrainment of different jaws.
  • this jaw can be releasably secured in order to cover with one or more multiple jaws the full range of fitting sizes.
  • a common trip lever 34 for the feed pawl 18 and the pawl 21 is provided.
  • the trigger lever 34 extends over the entire width of the pliers and simultaneously actuates driving pins 35 and 36, whereby the feed pawl 18 and the pawl 21 are respectively brought against the restoring force of springs 37, 38 out of engagement with the ratchet wheel 09.
  • the return of the guide pin 06 is done in the in Fig. 2 illustrated embodiment by a tension spring 39 in cooperation with a torsion spring 41 and the release lever 34.
  • a tension spring 39 in cooperation with a torsion spring 41 and the release lever 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Die Erfindung betrifft eine Zange zur Herstellung einer Schiebehülsenverbindung gemäß dem Oberbegriff des Anspruchs 1. Solch eint Zange ist beispiels weise aus der JP 2007 175820 A bekannt.The invention relates to a pair of pliers for producing a sliding sleeve connection according to the preamble of claim 1. Such a pair of pliers is example, from the JP 2007 175820 A known.

Gattungsgemäße Zangen bzw. Werkzeuge werden verwendet, um Kunststoffrohre mit Fittings zu verbinden. Dabei wird zunächst eine Schiebehülse über das zu verbindende Kunststoffrohr geschoben und anschließend dessen Ende aufgeweitet. In das aufgeweitete Ende wird das Fitting eingelegt und anschließend durch das Aufschieben der Schiebehülse auf das Kunststoffrohr fest und dicht mit diesem verbunden.Generic pliers or tools are used to connect plastic pipes with fittings. In this case, a sliding sleeve is first pushed over the plastic pipe to be connected and then widened its end. In the flared end of the fitting is inserted and then by pushing the sliding sleeve on the plastic tube firmly and tightly connected to this.

Aus dem Stand der Technik sind zahlreiche Werkzeuge und Zangen zum Aufschieben der Schiebehülse auf ein Rohr bekannt. Solche Werkzeuge tragen jeweils zwei Klemmbacken mit einer Aussparung, welche an den Durchmesser der Schiebehülse bzw. des Fittings angepasst sind. Durch einen oder mehrere Hübe, meist mittels Zangengriffen, werden die Klemmbacken aufeinander zu bewegt und dabei die Schiebehülse über das aufgeweitete Rohrende geschoben, wobei das Rohr mit dem Fitting verpresst wird. Da zum Aufschieben der Schiebehülse ein enorm hoher Kraftaufwand benötigt wird, sind solche handbetätigten Zangen meist sehr groß, um einen großen Hebel zur Kraftübertragung bereitzustellen.Numerous tools and pliers for pushing the sliding sleeve onto a pipe are known from the prior art. Such tools each carry two jaws with a recess, which are adapted to the diameter of the sliding sleeve or the fitting. By one or more strokes, usually by means of pliers handles, the jaws are moved toward each other while the sliding sleeve pushed over the flared pipe end, wherein the pipe is pressed with the fitting. Since an enormous amount of force is required to slide the sliding sleeve, such hand-operated pliers are usually very large to provide a large lever for power transmission.

Aus der DE 196 21 877 A1 ist eine Presszange mit Handbetätigung zur Herstellung von Klemmverbindungen durch das Aufpressen von Schiebehülsen auf Rohrverbindungsarmaturen bekannt, bei welcher die gegeneinander bewegbaren Gabelköpfe auf einem Führungsrohr angeordnet sind, welches um seine Längsachse verdrehbar ist. Durch diese Konstruktion kann das Werkzeugkopfteil in Bezug auf das Zangengelenk und den übrigen Zangenkörper bewegt werden, wodurch die Benutzung an schwer zugänglichen Stellen erleichtert wird. Der Antriebsmechanismus dieser Zange wird durch einen Antriebsexzenter mit einem Antriebsexzenterbolzen und daran befestigter Vorschubklinke in prinzipiell bekannter Weise realisiert. Der bewegliche Gabelkopf trägt eine umlaufende Verzahnung, in welche die Vorschubklinke bei Betätigung der Handgriffe einrastet und einen Vorschub des beweglichen Gabelkopfes bewirkt. Ist die Verpressung vollzogen, wird zunächst der mit dem Kraftübertragungsgetriebe erzeugte Spannungszustand aufrechterhalten, bis die Sperrklinke durch die Wirkung eines Federhebels außer Kraft gesetzt ist und außer Wirklage gelangt. Dazu muss vor oder nach dem letzten Arbeits- bzw. Presshub das Federglied gespannt werden, um die Sperrklinke in Lösebereitschaft zu setzen. Beim letzten Hub wird die Klemmspannung an der Sperrklinke aufgehoben und ausgeklinkt, wodurch der Rückholweg für den beweglichen Gabelkopf freigeworden ist. Das Ausheben der Sperrklinke kann aber schon vor dem Ende der Schiebehülsenposition ausgelöst werden, so dass nicht sichergestellt ist, dass die Pressung vollständig vollzogen wurde. Wird die Pressung stattdessen bis zum letztmöglichen Arbeitshub vorangetrieben, kann das Lösen der Sperrklinge aufgrund der fortbestehenden Spannung erhebliche Schwierigkeiten bereiten.From the DE 196 21 877 A1 a pressing tongs with manual operation for the production of clamping connections by the pressing of sliding sleeves on pipe connection fittings is known in which the mutually movable fork heads are arranged on a guide tube which is rotatable about its longitudinal axis. By this construction, the tool head part with respect to the forceps joint and the other pincers body be moved, which facilitates the use of hard to reach places. The drive mechanism of this pliers is realized by a drive eccentric with a drive eccentric pin and attached feed pawl in a manner known in principle. The movable fork head carries a circumferential toothing, in which the feed pawl engages upon actuation of the handles and causes a feed of the movable clevis. Once the compression has taken place, the voltage state generated by the power transmission is initially maintained until the pawl is disabled by the action of a spring lever and goes out of action. For this purpose, before or after the last working or pressing stroke, the spring member must be tensioned to put the pawl in readiness to release. At the last stroke, the clamping voltage on the pawl is released and disengaged, releasing the return path for the movable clevis. However, the lifting of the pawl can be triggered even before the end of the sliding sleeve position, so that it is not ensured that the pressure was completed. Instead, if the pressure is advanced to the last possible stroke, disengagement of the pawl may present considerable difficulties due to the persistent stress.

Ein anderes System ist beispielsweise aus der DE 103 35 519 A1 bekannt, bei welcher die Backen über einen Schraubmechanismus aufeinander zu bewegt werden können. Das Schraubsystem hat den Nachteil, dass es verhältnismäßig zeitaufwändig ist, die Klemmverbindung zunächst herzustellen und anschließend die Vorrichtung wieder zu lösen und in den Ausgangszustand zu versetzen. Außerdem ist es hier möglich, die Pressung unbeabsichtigt vorzeitig zu beenden, da es keine Vollzugsmeldung über die ordnungsgemäße Verpressung gibt.Another system is for example from the DE 103 35 519 A1 known, in which the jaws can be moved towards each other via a screw mechanism. The screw system has the disadvantage that it is relatively time-consuming to first make the clamp connection and then to loosen the device again and put it in the initial state. In addition, it is possible here to end the pressing unintentionally prematurely, since there is no enforcement report on the proper compression.

Die US 5 758 729 A beschreibt eine Zange mit einem integrierten Elektromotor, um die Vortriebskraft auf die Zangenbacken bei deren normaler Benutzung zu verstärken. Der Vortrieb der beweglichen Zangenbacke erfolgt über einen Kniehebel, dessen Streckung über eine Kurvenscheibe eingeleitet wird. Die Kurvenscheibe wird dabei über den Elektromotor angetrieben.The US 5,758,729 A describes a pair of pliers with an integrated electric motor to increase the propulsive force on the forceps jaws during their normal use. The advance of the movable jaw is done via a toggle whose extension is initiated via a cam. The cam is driven by the electric motor.

Aus der EP 0 900 633 B1 ist eine Ringstoß-Klammervorrichtung bekannt. Die dort vorgeschlagene Zahnstangen-Konstruktion erlaubt eine schnelle Annäherung der Klemmbacken an das Verbindungsstück und ein schnelles Loslösen am Ende der Arbeit. Dazu ist ein in zwei Positionen verstellbarer Riegel vorgesehen, der die Entkupplung des Ritzels von der Zahnstange erlaubt.From the EP 0 900 633 B1 For example, a ring impact stapler is known. The proposed there rack construction allows a quick approach of the jaws to the connector and a quick release at the end of the work. For this purpose, an adjustable in two positions latch is provided which allows the disengagement of the pinion from the rack.

Die JP 2007 175820 A offenbart eine Zange zur Herstellung einer Schiebehülsenverbindung Der Antrieb der zueinander bewegbaren Backen erfolgt mittels eines Kurbeltriebes. Bei dieser Zange ist ein einfacher Kurbeltrieb durch ein Langloch in einem beweglichen Teil realisiert, indem ein auf dem Klinkenrad gelagerter Bolzen geführt ist. Eine Kniehebelwirkung und Öffnung beim Weiterdrehen des Klinkenrades ist hier nicht verwirklicht.The JP 2007 175820 A discloses a pair of pliers for producing a sliding sleeve connection The drive of the mutually movable jaws by means of a crank mechanism. In this pliers, a simple crank drive is realized by a slot in a movable part by a bolt mounted on the ratchet wheel is guided. A toggle action and opening during further rotation of the ratchet wheel is not realized here.

Die WO 87/07553 A1 betrifft eine Handzange, bei der ein Hubkolben verschiebbar im festen Zangenteil gelagert ist. Dieser wird über einen Kurbeltrieb betätigt. Nach Durchlaufen eines vollständigen Hubes wird der Eingriff der Klinke in das Klinkenrad unterbrochen, so dass eine Rückstellung des Kolbens erfolgt.The WO 87/07553 A1 relates to a hand tool, in which a reciprocating piston is slidably mounted in the fixed pliers part. This is operated by a crank mechanism. After passing through a complete stroke, the engagement of the pawl is interrupted in the ratchet, so that a provision of the piston takes place.

Der Erfindung liegt die Aufgabe zugrunde, eine Zange zur Herstellung einer Schiebehülsenverbindung zu schaffen, welche nach erfolgtem Verpressen, d.h. nach dem Durchlaufen eines vollständigen Presshubes ein einfaches Entfernen der Zange von der hergestellten Verbindung erlaubt. Außerdem soll die Zange Fehlbedienungen vermeiden, also nicht vor erfolgtem Pressvorgang zu öffnen sein.The invention has for its object to provide a pliers for producing a sliding sleeve connection, which after completion of pressing, i. after passing through a complete press stroke, a simple removal of the forceps from the connection made possible. In addition, the pliers should avoid operating errors, so it should not be open before the pressing process.

Die Aufgabe wird durch eine Zange mit den Merkmalen des Anspruchs 1 gelöst.The object is achieved by a pair of pliers having the features of claim 1.

Eine erfindungsgemäße Zange zur Herstellung einer Schiebehülsenverbindung umfasst zwei gegeneinander bewegbare Backen, von denen eine erste Backe in einem festen Zangenteil gelagert ist und eine zweite Backe an einem im festen Zangenteil axial verschiebbaren Führungsbolzen angeordnet ist. Die Backen dienen der Aufnahme der zu verbindenden Rohrteile, also einer-seits der Schiebehülse und andererseits des Fittings. Zu diesem Zweck tragen die Backen in bekannter Weise eine u-förmige Ausnehmung, die an die Abmessung der zu verpressenden Teile angepasst ist.A pliers according to the invention for producing a sliding sleeve connection comprises two mutually movable jaws, of which a first jaw is mounted in a fixed pliers part and a second jaw is arranged on a guide pin axially displaceable in the fixed pliers part. The jaws are used to hold the pipe parts to be connected, on the one hand the sliding sleeve and the other part of the fitting. For this purpose, the jaws carry in a known manner a U-shaped recess which is adapted to the dimension of the parts to be pressed.

Vorzugsweise sind die Backen parallel gegeneinander bewegbar. Es ist aber ebenso denkbar, dass die Backen um einen weit entfernten Lagerpunkt verschwenkt werden.Preferably, the jaws are movable parallel to each other. But it is also conceivable that the jaws are pivoted about a distant bearing point.

Erfindungsgemäß ist der Führungsbolzen über einen Kurbeltrieb mit einem im festen Zangenteil drehbar gelagerten Klinkenrad antriebswirksam verbunden. Der Kurbeltrieb wirkt derart, dass bei einer gedachten fortlaufenden Drehung des Klinkenrades der Führungsbolzen ständig linear hin- und herbewegt würde.According to the invention, the guide pin is drivingly connected via a crank mechanism with a ratchet wheel rotatably mounted in the fixed pliers part. The crank mechanism acts such that at an imaginary continuous rotation of the ratchet wheel of the guide pin would constantly reciprocated linearly.

Der Kurbeltrieb umfasst das Klinkenrad und einen Druckhebel. Der Druckhebel ist mit seinem einen Ende an einer exzentrisch auf dem Klinkenrad angeordneten radseitigen Lagerstelle und mit seinem anderen Ende mit dem der zweiten Backe entgegengesetzten Ende des Führungsbolzens gelenkig verbunden. Bei einer Drehung des Klinkenrades wird der Führungsbolzen zunächst in Schließrichtung verschoben, d.h. die Backen bewegen sich aufeinander zu. Nach Erreichen einer Totpunktstellung des Druckhebels erfolgt beim Weiterdrehen des Klinkenrades in derselben Richtung eine Rück-Verschiebung des Führungsbolzens in Öffnungsrichtung.The crank mechanism comprises the ratchet wheel and a pressure lever. The pressure lever is connected at one end to an eccentrically arranged on the ratchet wheel side bearing and pivotally connected at its other end to the second jaw opposite end of the guide pin. Upon rotation of the ratchet wheel, the guide pin is first displaced in the closing direction, i. the cheeks move towards each other. After reaching a dead center position of the pressure lever takes place during further rotation of the ratchet wheel in the same direction, a return displacement of the guide pin in the opening direction.

Dieser Kurbeltriebmechanismus kann auch einfach gespiegelt aufgebaut werden.This crank mechanism can also be simply mirrored.

Der Vorteil der Erfindung ist insbesondere darin zu sehen, dass bei einer weiteren Betätigung der Zange nach Vollendung des vollständigen Hubes automatisch eine Auseinanderbewegung/ Öffnung der Backen erfolgt, sodass ein einfaches Lösen der Zange von der fertigen Verbindung möglich ist. Vorteilhaft ist es außerdem, dass die Zange keine Fehlbedienung zulässt, weil sie nicht vor Durchlaufen des Totpunktes zu öffnen ist.The advantage of the invention is to be seen in particular in the fact that in a further actuation of the forceps after completion of the complete stroke automatically a disassembly movement / Opening the jaws so that a simple release of the pliers from the finished connection is possible. It is also advantageous that the pliers do not allow incorrect operation, because they can not be opened before passing through the dead center.

Ein weiterer Vorteil der Verwendung des Kurbeltriebes ist darin zu sehen, dass durch die Wirkung des sich streckenden Kniehebels eine Kraft zum Ausführung der Pressverbindung aufgebracht wird, die mit fortlaufender Schließung der Backen ansteigt. D.h. das Übersetzungsverhältnis zwischen Handgriffbewegung und Backenbewegung verändert sich während der Pressung zur Bereitstellung höherer Kräfte in der Endphase der Pressung.Another advantage of the use of the crank mechanism is the fact that a force for performing the press connection is applied by the action of the extending toggle lever, which increases with continuous closure of the jaws. That the gear ratio between handle movement and jaw movement changes during pressing to provide higher forces in the final stage of the pressing.

Das Klinkenrad wird mittels eines am festen Zangenteil gelenkig gelagerten Handgriffes betätigt. Eine Vorschubklinke ist im Handgriff drehbar abgestützt und gegenüber dem festen Zangenteil mittels einer Feder in Richtung Klinkenrad gedrängt. Die Vorschubklinke weist einen Klinkenzahn auf, der in die Verzahnung des Klinkenrades eingreift und bei Betätigung des Handgriffes eine Drehung des Klinkenrades verursacht.The ratchet wheel is actuated by means of a handle pivotally mounted on the fixed pliers part. A feed pawl is rotatably supported in the handle and urged toward the ratchet wheel with respect to the fixed pliers part by means of a spring. The feed pawl has a pawl tooth, which engages in the toothing of the ratchet wheel and causes a rotation of the ratchet wheel upon actuation of the handle.

Die Zange weist außerdem eine Sperrklinke auf, welche durch eine Federkraft in das Klinkenrad eingeschwenkt wird und ein Rückdrehen des Klinkenrades bei erneuter Betätigung des Handgriffes verhindert, solange die Vorschubklinke außer Eingriff ist.The pliers also has a pawl, which is pivoted by a spring force in the ratchet wheel and prevents reverse rotation of the ratchet wheel on re-actuation of the handle, as long as the feed pawl is disengaged.

Eine weitere Besonderheit der Erfindung kann darin gesehen werden, dass ein Kraftübersetzungsverhältnis des Kurbeltriebes durch dessen Geometrie variabel gestaltet werden kann. Durch ein günstiges Kraftübersetzungsverhältnis wird es möglich, eine Zange für eine Einhandbetätigung bereitzustellen.Another peculiarity of the invention can be seen in the fact that a power transmission ratio of the crank mechanism can be made variable by its geometry. By a favorable power transmission ratio, it is possible to provide a pair of pliers for a one-hand operation.

In einer bevorzugten Ausführungsform der Erfindung ist der Führungsbolzen im festen Zangenteil mittels Rollen beidseitig abgestützt und geführt.In a preferred embodiment of the invention, the guide pin is supported and guided on both sides in the fixed pliers part by means of rollers.

Weiterhin ist zwischen dem Klinkenrad und dem Führungsbolzen eine Rückstellfeder angeordnet, welche bei lastfrei geschaltetem Klinkenrad eine Rückstellung des Führungsbolzens in seine Ausgangsstellung (geöffnete Stellung der Backen) erzwingt.Furthermore, a return spring is arranged between the ratchet wheel and the guide pin, which forces a reset of the guide pin in its initial position (open position of the jaws) in load-free switched ratchet wheel.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1:
eine erste Ausführungsform einer erfindungsgemäßen Zange zur Herstellung einer Schiebehülsenverbindung in einer Draufsicht;
Fig. 2:
eine zweite bevorzugte Ausführungsform der Zange zur Herstellung einer Schiebhülsenverbindung.
The invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1:
a first embodiment of a pliers according to the invention for producing a sliding sleeve connection in a plan view;
Fig. 2:
a second preferred embodiment of the pliers for producing a sliding sleeve connection.

In Fig. 1 ist eine erste Ausführungsform einer erfindungsgemäßen Zange zur Herstellung einer Schiebehülsenverbindung dargestellt. Die Zange weist in bekannter Weise zwei parallel gegeneinander bewegbare Backen 01, 02 zur Aufnahme von zu verbindenden Rohrteilen auf. Die erste Backe 01 ist in einem festen Zangenteil 03 gelagert. Die erste Backe 01 ist vorzugsweise mittels eines Steckbolzens 04 lösbar am festen Zangenteil 03 befestigt. Dadurch können verschiedene Backen für die Aufnahme verschiedener Fittings im festen Zangenteil eingesetzt werden.In Fig. 1 a first embodiment of a pliers according to the invention for producing a sliding sleeve connection is shown. The pliers has in a known manner two parallel mutually movable jaws 01, 02 for receiving pipe parts to be joined. The first jaw 01 is mounted in a fixed pliers part 03. The first jaw 01 is preferably fastened by means of a plug pin 04 releasably on the fixed pliers part 03. This allows different jaws to be used to hold various fittings in the fixed pliers part.

Die zweite Backe 02 ist an einem ersten freien Ende eines Führungsbolzens 06 befestigt, der ersten Backe 01 gegenüberliegend. Der Führungsbolzen 06 ist im festen Zangenteil 03 verschiebbar gelagert. Die Abstützung des Führungsbolzens 06 im festen Zangenteil 03 erfolgt vorzugsweise mittels Rollen 07, welche beidseitig einer Verschiebeachse 08 in einem axialen Abstand voneinander vorgesehen sind.The second jaw 02 is attached to a first free end of a guide pin 06, the first jaw 01 opposite. The guide pin 06 is slidably mounted in the fixed pliers part 03. The support of the guide pin 06 in the fixed pliers part 03 is preferably carried out by means of rollers 07 which are provided on both sides of a displacement axis 08 at an axial distance from each other.

Die zweite Backe 02 kann mehrere Aufnahmen 05 für verschiedene Fittings bzw. Schiebehülsen aufweisen. Um die passende Aufnahme 05 in die Arbeitsposition zu bringen, ist die zweite Backe 02 vorzugsweise um die Verschiebeachse 08 schwenkbar angeordnet.The second jaw 02 may have a plurality of receptacles 05 for different fittings or sliding sleeves. In order to bring the matching receptacle 05 in the working position, the second jaw 02 is preferably arranged pivotably about the displacement axis 08.

Der Führungsbolzen 06 ist über einen Kurbeltrieb mit einem Klinkenrad 09 verbunden. Der Kurbeltrieb umfasst dabei das Klinkenrad 09 und einen Druckhebel 11, welcher mit seinem einen Ende in einer radseitigen Lagerstelle 12 und mit seinem anderen Ende in einer bolzenseitigen Lagerstelle 13 schwenkbar befestigt ist. Die radseitige Lagerstelle 12 ist dabei exzentrisch auf dem Klinkenrad 09 angeordnet. Die bolzenseitige Lagerstelle 13 ist an dem der Backe 02 abgewandten Ende des Führungsbolzens 06 vorgesehen.The guide pin 06 is connected via a crank drive with a ratchet wheel 09. The crank mechanism comprises the ratchet wheel 09 and a pressure lever 11, which is pivotally mounted with its one end in a wheel-side bearing 12 and with its other end in a bolt-side bearing 13. The wheel-side bearing 12 is arranged eccentrically on the ratchet wheel 09. The bolt-side bearing 13 is provided at the end facing away from the jaw 02 of the guide pin 06.

Bei einer durch die Zangenbetätigung hervorgerufenen Drehung des Klinkenrades 09 in Richtung des Drehpfeils 14 erfolgt während des Presshubes über den Druckhebel 11 eine Verschiebung des Führungsbolzens 06 in Schließrichtung 16, in der die Backen 01, 02 aufeinander zu bewegt werden.When caused by the forceps operation rotation of the ratchet wheel 09 in the direction of the rotary arrow 14 takes place during the pressing stroke on the pressure lever 11, a displacement of the guide pin 06 in the closing direction 16, in which the jaws 01, 02 are moved towards each other.

Der Antrieb des Klinkenrades 09 erfolgt über einen am festen Zangenteil 03 gelenkig gelagerten Handgriff 17, an welchem eine Vorschubklinke 18 schwenkbar und exzentrisch vom Schwenkpunkt des Handgriffs 17 angeordnet ist. Dabei greift ein Klinkenzahn 19 in die Verzahnung des Klinkenrades 09 ein und prägt in tangentialer Richtung eine Kraft ein. Bei einer schließenden Bewegung des Handgriffes 17 erfolgt durch die Vorschubklinke 18 immer eine Drehung des Klinkenrades 09 in Richtung des Drehpfeils 14.The drive of the ratchet wheel 09 via a pivotally mounted on the fixed pliers part 03 handle 17, to which a feed pawl 18 is pivotally and eccentrically arranged from the pivot point of the handle 17. In this case, a ratchet tooth 19 engages in the toothing of the ratchet wheel 09 and coins in the tangential direction a force. In a closing movement of the handle 17 is carried by the feed pawl 18 is always a rotation of the ratchet wheel 09 in the direction of the rotary arrow 14th

Im festen Zangenteil 03 ist weiterhin eine Sperrklinke 21 vorgesehen, welche zur Verhinderung einer Drehung des Klinkenrades 09 entgegen der Drehrichtung 14 in das Klinkenrad 09 eingreift.In the fixed pliers part 03, a pawl 21 is further provided, which engages to prevent rotation of the ratchet wheel 09 against the direction of rotation 14 in the ratchet wheel 09.

Der Abstand zwischen den Backen und der realisierbare Hub sind so gewählt, dass die Verpressung spätestens bei Erreichen einer Totpunktstellung abgeschlossen ist. Wird das Klinkenrad 09 durch weitere Hübe des Handgriffes 17 über die in der Fig. 1 dargestellte Totpunktstellung, bei der die Lagerstellen 12, 13 und der Mittelpunkt des Klinkenrades auf einer Geraden liegen, hinweg weitergedreht, erfolgt eine Bewegung des Druckhebels 11 über den Totpunkt hinaus und dadurch eine Bewegung des Führungsbolzens in Öffnungsrichtung 22, bei welcher sich die Backen 01, 02 voneinander weg bewegen. Es genügen einer oder wenige Hübe mit dem Handgriff 17, um eine Lösung der Backen 01, 02 von der hergestellten Pressverbindung zu erreichen und die Zange vom verbundenen Rohr zu entfernen.The distance between the jaws and the realizable stroke are chosen so that the compression is completed at the latest when reaching a dead center position. If the ratchet wheel 09 by further strokes of the handle 17 on the in the Fig. 1 shown dead center position, in which the bearings 12, 13 and the center of the ratchet wheel lie on a straight line, away rotated further, there is a movement of the pressure lever 11 beyond the dead center and thereby a movement of the guide pin in the opening direction 22, in which the jaws 01, 02 move away from each other. Suffice one or a few strokes with the handle 17 to achieve a solution of the jaws 01, 02 of the produced press connection and remove the pliers from the connected pipe.

Nun kann bei gleichzeitiger manueller Betätigung der Vorschubklinke 18 und der Sperrklinke 21, durch welche beide Klinken außer Eingriff zum Klinkenrad 09 gebracht werden, das Klinkenrad 09 lastfrei geschaltet und der Führungsbolzen 06 in seine Ausgangsstellung (weit geöffnete Backen) verbracht werden. Dies geschieht bei ausgeklinkter Vorschub- und Sperrklinke automatisch durch eine Rückstellfeder 24, welche das Klinkenrad 09 in eine Ausgangsposition dreht. Die Vorschubklinke 18 und die Sperrklinke 21 besitzen für die Betätigung jeweils einen Betätigungsabschnitt, die über den festen Zangeteil 03 hinausragen. Die Betätigungsabschnitte sind gegenüberliegend so zueinander positioniert, dass sie gleichzeitig mit einer Hand bedienbar sind. Bei einer abgewandelten Ausführungsform wirkt die Rückstellfeder unmittelbar auf den Vorschubbolzen 06 ein.Now, with simultaneous manual actuation of the feed pawl 18 and the pawl 21, by which both pawls are disengaged from the ratchet 09, the ratchet wheel 09 is switched load-free and the guide pin 06 is moved to its starting position (wide open jaws). This is done automatically with a disengaged feed and pawl by a return spring 24 which rotates the ratchet wheel 09 in a starting position. The feed pawl 18 and the pawl 21 each have for the actuation an operating portion that protrude beyond the fixed tong part 03. The actuating sections are positioned opposite each other so that they can be operated simultaneously with one hand. In a modified embodiment, the return spring acts directly on the feed pin 06 a.

Am festen Zangenteil 03 ist natürlich außerdem ein zweiter fester Handgriff 23 zur Betätigung der Zange vorgesehen.Of course, a second fixed handle 23 is also provided for actuating the pliers on the fixed pliers part 03.

Das Kraftübersetzungsverhältnis des Kurbeltriebes kann derart gewählt werden, dass eine Einhandbedienung der Zange möglich ist. Es werden dann zwar mehrere Hübe, jedoch bei vermindertem Kraftaufwand nötig sein. Der Vorteil besteht darin, dass die Zange mit kleinen Handgriffen ausgestattet werden kann, was wiederum günstig für den Einsatz an schwer zugänglichen Stellen ist. Das Kraftübersetzungsverhältnis des Kurbeltriebes wird durch das Verhältnis des Radius r des Klinkenrades 09 zum Abstand a der Lagerstelle 12 vom Drehpunkt des Klinkenrades 09 bestimmt.The power transmission ratio of the crank mechanism can be selected such that a one-handed operation of the pliers is possible. It will be necessary then several strokes, but with reduced effort. The advantage is that the pliers can be equipped with small handles, which in turn is favorable for use in hard to reach places. The force transmission ratio of the crank mechanism is determined by the ratio of the radius r of the ratchet wheel 09 to the distance a of the bearing 12 from the pivot point of the ratchet wheel 09.

Um das Schließen der Backen zu Beschleunigen, kann das Klinkenrad 09 unmittelbar über einen Drehknopf 25 betätigt werden. Über den Drehknopf 25 lassen sich zwar keine großen Kräfte aufbringen, jedoch können die Backen damit in eine Stellung gebracht werden, in welcher sie im Wesentlichen kraftfrei an Fitting bzw. Schiebhülse anliegen. Der Drehknopf 25 kann ebenfalls für die schnelle vollständige Öffnung der Backen verwendet werden, sobald diese spannungsfrei sind.To accelerate the closing of the jaws, the ratchet wheel 09 can be actuated directly via a rotary knob 25. Although no great forces can be applied by way of the rotary knob 25, the jaws can thus be brought into a position in which they rest essentially without force on the fitting or sliding sleeve. The knob 25 can also be used for the fast complete opening of the jaws, as soon as they are de-energized.

Fig. 2 zeigt eine zweite bevorzugte Ausführungsform der erfindungsgemäßen Zange. Diese Zange arbeitet prinzipiell nach dem zuvor beschriebenen Prinzip. Einige konstruktive Unterschiede werden nachfolgend erläutert. Die erste Backe 31 ist im Unterschied zu der zuvor beschriebenen Ausführungsform drehbar am festen Zangenteil 03 befestigt. Die Backe 31 ist als Mehrfachbacke ausgeführt und besitzt in dieser Ausführungsform zwei Aufnahmebereiche 32 für die Aufnahme verschiedener Fittings. Durch Drehen der Backe 31 um 180° um eine Drehachse 33 kann der zu verwendende Aufnahmebereich ausgewählt werden. Fig. 2 shows a second preferred embodiment of the forceps according to the invention. This pliers works in principle according to the principle described above. Some constructive differences are explained below. The first jaw 31 is in contrast to the embodiment described above rotatably mounted on the fixed pliers part 03. The jaw 31 is designed as a multi-jaw and has in this embodiment two receiving areas 32 for receiving various fittings. By rotating the jaw 31 180 ° about a rotation axis 33, the recording area to be used can be selected.

In einer nochmals abgewandelten Ausführungsform kann die erste Backe auch revolverartig mit noch mehr Aufnahmebereichen für die gängigen Fittinggrößen versehen werden, so dass auf das separate Mitführen verschiedener Backen verzichtet werden kann. Selbstverständlich kann auch diese Backe lösbar befestigt sein, um mit einer oder mehreren Mehrfachbacken das gesamte Spektrum an Fittinggrößen abdecken zu können.In a further modified embodiment, the first jaw can also be revolver-like provided with even more receiving areas for the usual fitting sizes, so that it can be dispensed with the separate entrainment of different jaws. Of course, this jaw can be releasably secured in order to cover with one or more multiple jaws the full range of fitting sizes.

Als weiterer Unterschied zu der zuerst beschriebenen Ausführungsform ist ein gemeinsamer Auslösehebel 34 für die Vorschubklinke 18 und die Sperrklinke 21 vorgesehen. Der Auslösehebel 34 erstreckt sich über die gesamte Breite der Zange und betätigt gleichzeitig Mitnehmerstifte 35 und 36, wodurch die Vorschubklinke 18 und die Sperrklinke 21 jeweils gegen die Rückstellkraft von Federn 37, 38 außer Eingriff mit dem Klinkenrad 09 gebracht werden.As a further difference from the first described embodiment, a common trip lever 34 for the feed pawl 18 and the pawl 21 is provided. The trigger lever 34 extends over the entire width of the pliers and simultaneously actuates driving pins 35 and 36, whereby the feed pawl 18 and the pawl 21 are respectively brought against the restoring force of springs 37, 38 out of engagement with the ratchet wheel 09.

Das Rückstellen des Führungsbolzens 06 geschieht in der in Fig. 2 dargestellten Ausführungsform durch eine Zugfeder 39 im Zusammenwirken mit einer Drehfeder 41 und dem Auslösehebel 34. Bei gelöster Vorschubklinke 18 und Sperrklinke 21 bewegt die Drehfeder 41 das Klinkenrad 09 über den Totpunkt des Antriebes, die Zugfeder 39 zieht dann den Führungsbolzen 06 in die weit geöffnete Ausgangsstellung.The return of the guide pin 06 is done in the in Fig. 2 illustrated embodiment by a tension spring 39 in cooperation with a torsion spring 41 and the release lever 34. When dissolved feed pawl 18 and pawl 21, the torsion spring 41 moves the ratchet 09 over the dead center of the drive, the tension spring 39 then pulls the guide pin 06 in the wide open starting position ,

BezugszeichenlisteLIST OF REFERENCE NUMBERS

01 -01 -
erste Backefirst cheek
02 -02 -
zweite Backesecond cheek
03 -03 -
fester Zangenteilfixed pliers part
04 -04 -
SteckbolzenSteckbolzen
05 -05 -
Aufnahmen an der zweiten BackeShots on the second cheek
06 -06 -
Führungsbolzenguide pins
07 -07 -
Rollerole
08 -08 -
Verschiebeachsedisplacement axis
09 -09 -
Klinkenradratchet
10 -10 -
--
11 -11 -
Druckhebelpressure lever
12 -12 -
radseitige LagerstelleWheel-side bearing point
13 -13 -
bolzenseitige Lagerstellebolt-side bearing point
14 -14 -
Drehpfeilrotation arrow
15 -15 -
--
16 -16 -
Schließrichtungclosing direction
17 -17 -
beweglicher Handgriffmovable handle
18 -18 -
Vorschubklinkefeed pawl
19 -19 -
Klinkenzahnratchet tooth
20 -20 -
--
21 -21 -
Sperrklinkepawl
22 -22 -
Öffnungsrichtungopening direction
23 -23 -
fester Handgriffsolid handle
24 -24 -
RückstellfederReturn spring
25 -25 -
Drehknopfknob
26 -26 -
--
27 -27 -
--
28 -28 -
--
29 -29 -
--
30 -30 -
--
31 -31 -
erste Backefirst cheek
32 -32 -
Aufnahmebereichreception area
33 -33 -
Drehachseaxis of rotation
34 -34 -
Auslösehebelsear
35 -35 -
Mitnehmertakeaway
36 -36 -
Mitnehmertakeaway
37 -37 -
Zugfedermainspring
38 -38 -
Zugfedermainspring
39 -39 -
Zugfedermainspring
40 -40 -
--
41 -41 -
Drehfedertorsion spring

Claims (14)

  1. Pliers for establishing a sliding-sleeve connection, comprising two jaws (01, 02; 31) that can be moved toward each other for holding pipe parts to be connected, in which a first jaw (01; 31) is mounted in a fixed plier part (03) and a second jaw (02) is arranged on a guide pin (06) that can be displaced axially in the fixed plier part (03), the guide pin (06) being connected in a driven manner through a crank drive to a ratchet wheel (09) rotatably mounted in the fixed plier part (03), characterized in that the crank drive comprises the ratchet wheel (09) and a pressure lever (11), wherein the pressure lever (11) is connected in an articulated manner to its one end in a wheel-side mounting point (12) arranged eccentrically on the ratchet wheel (09) and to its other end on the guide pin (06) in a pin-side mounting point (13), and wherein on rotation of the ratchet wheel (09) the guide pin (06) is first displaced in the closing direction (16) and after achieving a dead-point position of the pressure lever (11), on further rotation of the ratchet wheel (09) the guide pin (06) is displaced in the opening direction (22).
  2. The pliers according to Claim 1, characterized in that the pin-side mounting point (13) is arranged at the free end of the guide pin (06), which is opposite the second jaw (02).
  3. The pliers according to Claim 1 or 2, characterized in that a translation ratio (Ü) of the crank drive is defined by the radius (r) of the ratchet wheel (09) and the distance (a) of the wheel-side mounting point (12) of the pressure lever (11) from the centre of the ratchet wheel (09), where Ü = r/a.
  4. The pliers according to any one of Claims 1 to 3, characterized in that the ratchet wheel (09) is activated by means of a handle (17) mounted in an articulated manner on the fixed plier part (03), wherein a feed ratchet (18) is pivotably supported in the handle (17), pressed by means of a spring in the direction of the ratchet wheel (09) and comprises a ratchet tooth (19) which, when the handle (17) is swung into place, engages with the teeth of the ratchet wheel (09) and carries this along with it.
  5. The pliers according to Claim 4, characterized in that they additionally have a detent (21), which engages with the ratchet wheel (09) against a spring force and prevents a reverse rotation of the ratchet wheel (09) when the handle (17) is swung out.
  6. The pliers according to Claim 5, characterized in that the feed ratchet (18) and the detent (21) each have an activating section which projects beyond the fixed plier part (03).
  7. The pliers according to Claim 6, characterized in that the feed ratchet (18) and the detent (21) are positioned relative to each other such that their activating sections can be operated at the same time with one hand.
  8. The pliers according to Claim 5, characterized in that the feed ratchet (18) and the detent (21) can be activated by a common release lever (34).
  9. The pliers according to any one of Claims 1 to 8, characterized in that the guide pin (06) is supported and guided in the fixed plier part (03) by means of rollers (07) on both sides of a displacement axis (08).
  10. The pliers according to any one of Claims 1 to 9, characterized in that a return spring (24) is arranged on the ratchet wheel (09), which forces a resetting of the guide pin (06) when the ratchet wheel (09) is under no load.
  11. The pliers according to any one of Claims 1 to 10, characterized in that the second jaw (02) is pivotably mounted at a first free end of the guide pin (06) about the displacement axis (08) thereof, and that at least two different holders (05) are provided on the second jaw (02), which can each be pivoted into a position opposite to the first jaw (01).
  12. The pliers according to any one of Claims 1 to 11, characterized in that the first jaw (01) is releasably fastened to the fixed plier part (03).
  13. The pliers according to any one of Claims 1 to 12, characterized in that a rotary knob (25), by means of which a manual rotation of the ratchet wheel (09) can be performed, is fastened to the ratchet wheel (09).
  14. The pliers according to any one of Claims 1 to 13, characterized in that a stationary handle (23) is provided on the fixed plier part (03).
EP10700836A 2009-01-12 2010-01-08 Pliers for establishing a sliding-sleeve connection Not-in-force EP2385891B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000153A DE102009000153B3 (en) 2009-01-12 2009-01-12 Pliers for producing a sliding sleeve connection
PCT/EP2010/050146 WO2010079211A2 (en) 2009-01-12 2010-01-08 Pliers for establishing a sliding-sleeve connection

Publications (2)

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EP2385891A2 EP2385891A2 (en) 2011-11-16
EP2385891B1 true EP2385891B1 (en) 2012-09-05

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US (1) US20110271502A1 (en)
EP (1) EP2385891B1 (en)
CN (1) CN102271871B (en)
AU (1) AU2010204256B2 (en)
DE (1) DE102009000153B3 (en)
NZ (1) NZ594458A (en)
RU (1) RU2011133596A (en)
WO (1) WO2010079211A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013813U1 (en) * 2010-10-04 2012-01-13 Rehau Ag + Co. Sliding element for transmitting a sliding force to a pipe connection element and connecting tool comprising such a sliding element
CN209566035U (en) * 2019-02-01 2019-11-01 杭州巨星科技股份有限公司 Ratchet F folder

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742737A (en) * 1986-06-06 1988-05-10 Amp Incorporated Multiple stroke ratchet hand tool
DE4414967C2 (en) * 1994-04-28 1997-07-17 Weidmueller Interface Servo gun
DE19621877C2 (en) * 1996-05-31 2002-06-27 Rehau Ag & Co Compression pliers
FR2767736B1 (en) * 1997-09-03 1999-12-03 Virax Sa PUSH-RING CLAMP DEVICE USED IN THE PLUMBING FIELD FOR FITTING PIPES IN PLASTIC MATERIAL OR IN PLASTIC-ALUMINUM COMPLEX ON FITTINGS
US6862766B2 (en) * 2002-04-16 2005-03-08 Malco Products, Inc. Hand tool for expanding pipe ends and pressing sleeves onto fittings
DE10246514A1 (en) * 2002-10-04 2004-04-15 REMS-WERK Christian Föll und Söhne GmbH & Co. Portable tool
DE10335519A1 (en) * 2003-07-31 2005-02-17 Höppner, Frank Tool to fit sliding sleeve to end of plastic pipes for central heating systems etc. has clamp jaw holder elements connected via screw for movement parallel to each other, consists of aluminum
US20060043660A1 (en) * 2004-09-02 2006-03-02 Great Neck Saw Manufacturers, Inc. Bar clamp
JP2007175820A (en) * 2005-12-28 2007-07-12 Hitachi Metals Ltd Connector for piping
US8056446B1 (en) * 2008-03-11 2011-11-15 Dale K Wheeler Ratcheting adjustable wrench

Also Published As

Publication number Publication date
WO2010079211A3 (en) 2010-10-14
RU2011133596A (en) 2013-02-20
WO2010079211A2 (en) 2010-07-15
AU2010204256B2 (en) 2015-08-27
CN102271871B (en) 2014-01-15
EP2385891A2 (en) 2011-11-16
NZ594458A (en) 2012-11-30
WO2010079211A4 (en) 2010-11-25
US20110271502A1 (en) 2011-11-10
CN102271871A (en) 2011-12-07
AU2010204256A1 (en) 2011-07-28
DE102009000153B3 (en) 2010-07-15

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