EP2385891B1 - Pince destinée à l'assemblage par manchon coulissant - Google Patents

Pince destinée à l'assemblage par manchon coulissant 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)
English (en)
Other versions
EP2385891A2 (fr
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/fr
Application granted granted Critical
Publication of EP2385891B1 publication Critical patent/EP2385891B1/fr
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)

Claims (14)

  1. Pince pour créer une liaison par douille coulissante comprenant deux mâchoires (01, 02 ; 31) mobiles l'une contre l'autre pour recevoir des pièces de tuyau à relier, sachant qu'une première mâchoire (01 ; 31) est disposée dans une partie de pince fixe (03) et qu'une deuxième mâchoire (02) est disposée sur une broche de guidage (06) pouvant être déplacée axialement dans la partie de pince fixe (03), sachant que la broche de guidage (06) est reliée en agissant pour l'entraînement, via une commande à manivelle, à une roue à cliquets (09) positionnée de manière rotative dans la partie de pince fixe (03), caractérisé en ce que la commande par manivelle comprend la roue à cliquets (09) et un levier de pression (11), sachant que le levier de pression (11) est relié de manière articulée par une extrémité dans un point d'appui côté roue (12) disposé de manière excentrique sur la roue à cliquets (09) et par son autre extrémité sur la broche de guidage (06) dans un point d'appui coté broche (13), et sachant que lorsque la roue à cliquets (09) tourne, la broche de guidage (06) est d'abord déplacée dans le sens de fermeture (16) et une fois que le levier de pression (11) a atteint une position de point mort lorsque l'on continue de tourner la roue à cliquets (09), la broche de guidage (06) est poussée dans le sens d'ouverture (22).
  2. Pince selon la revendication 1, caractérisée en ce que le point d'appui coté broche (13) est disposé sur l'extrémité libre de la broche de guidage (06) face à la deuxième mâchoire (02).
  3. Pince selon la revendication 1 ou 2, caractérisée en ce qu'un rapport de translation (Ü) de la commande par manivelle est déterminé par le rayon (r) de la roue à cliquets (09) et la distance (a) du point d'appui côté roue (12) du levier de pression (11) jusqu'au centre de la roue à cliquets (09), sachant que Ü = r/a.
  4. Pince selon l'une des revendications 1 à 3, caractérisée en ce que la roue à cliquets (09) est actionnée via une poignée (17) disposée de manière articulée sur la partie de pince fixe (03), sachant qu'un cliquet d'avancement (18) est appuyé de manière pivotante dans la poignée (17), est poussé via un ressort en direction de la roue à cliquets (09) et présente une dent de cliquet (19) qui se met en prise dans l'engrènement de la roue à cliquets (09) et entraîne celle-ci lorsque la poignée (17) rentre par pivotement.
  5. Pince selon la revendication 4, caractérisée en ce qu'elle présente en outre un cliquet de blocage (21) qui se met en prise dans la roue à cliquets (09) contre une force de rappel et empêche une rotation arrière de la roue à cliquets (09) lorsque la poignée (17) sort par pivotement.
  6. Pince selon la revendication 5, caractérisée en ce que le cliquet d'avancement (18) et le cliquet de blocage (21) présentent respectivement une section d'actionnement qui fait saillie au-dessus de la partie de pince fixe (03).
  7. Pince selon la revendication 6, caractérisée en ce que le cliquet d'avancement (18) et le cliquet de blocage (21) sont ainsi positionnés l'un par rapport à l'autre que leurs sections d'actionnement peuvent être maniées en même temps d'une seule main.
  8. Pince selon la revendication 5, caractérisée en ce que le cliquet d'avancement (18) et le cliquet de blocage (21) peuvent être actionnés par un levier de déclenchement (34) commun.
  9. Pince selon l'une des revendications 1 à 8, caractérisée en ce que la broche de guidage (06) est appuyée et dirigée des deux côtés d'un axe de déplacement (08) via des rouleaux (07), dans la partie de pince fixe (03).
  10. Pince selon l'une des revendications 1 à 9, caractérisée en ce qu'un ressort de rappel (24) est disposé sur la roue à cliquets (09), lequel force une position de retour de la broche de guidage (06) dans une position de départ lorsque la roue à cliquets (09) est hors charge.
  11. Pince selon l'une des revendications 1 à 10, caractérisée en ce que la deuxième mâchoire (02) est positionnée de manière pivotante sur son axe de axe de déplacement (08) sur une première extrémité libre de la broche de guidage (06), et qu'au moins deux réceptions (05) différentes sont prévues sur la deuxième mâchoire (02) qui peuvent respectivement pivoter dans une position face à la première mâchoire (01).
  12. Pince selon l'une des revendications 1 à 11, caractérisée en ce que la première mâchoire (01) est fixé de manière séparable sur la partie de pince fixe (03).
  13. Pince selon l'une des revendications 1 à 12, caractérisée en ce qu'un bouton tournant (25) est fixé sur la roue à cliquets (09), par lequel on peut effectuer une rotation manuelle de la roue à cliquets (09).
  14. Pince selon l'une des revendications 1 à 13, caractérisée en ce qu'une poignée fixe (23) est prévue sur la partie de pince fixe (03).
EP10700836A 2009-01-12 2010-01-08 Pince destinée à l'assemblage par manchon coulissant Not-in-force EP2385891B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000153A DE102009000153B3 (de) 2009-01-12 2009-01-12 Zange zur Herstellung einer Schiebehülsenverbindung
PCT/EP2010/050146 WO2010079211A2 (fr) 2009-01-12 2010-01-08 Pince destinée à l'assemblage par manchon coulissant

Publications (2)

Publication Number Publication Date
EP2385891A2 EP2385891A2 (fr) 2011-11-16
EP2385891B1 true EP2385891B1 (fr) 2012-09-05

Family

ID=42106026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10700836A Not-in-force EP2385891B1 (fr) 2009-01-12 2010-01-08 Pince destinée à l'assemblage par manchon coulissant

Country Status (8)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013813U1 (de) * 2010-10-04 2012-01-13 Rehau Ag + Co. Schiebeelement zur Übertragung einer Schiebekraft auf ein Rohranschlusselement und Verbindungswerkzeug, das ein derartiges Schiebeelement umfasst
CN209566035U (zh) * 2019-02-01 2019-11-01 杭州巨星科技股份有限公司 棘轮f夹

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 (de) * 1994-04-28 1997-07-17 Weidmueller Interface Servozange
DE19621877C2 (de) * 1996-05-31 2002-06-27 Rehau Ag & Co Preßzange
FR2767736B1 (fr) * 1997-09-03 1999-12-03 Virax Sa Dispositif de pince pousse-bague utilise dans le domaine de la plomberie pour l'emboitement des tuyaux en matiere plastique ou en complexe plastique-aluminium sur des raccords
US6862766B2 (en) * 2002-04-16 2005-03-08 Malco Products, Inc. Hand tool for expanding pipe ends and pressing sleeves onto fittings
DE10246514A1 (de) * 2002-10-04 2004-04-15 REMS-WERK Christian Föll und Söhne GmbH & Co. Tragbares Werkzeug
DE10335519A1 (de) * 2003-07-31 2005-02-17 Höppner, Frank Werkzeug zur Anordnung einer Schiebehülse auf einem Rohrende
US20060043660A1 (en) * 2004-09-02 2006-03-02 Great Neck Saw Manufacturers, Inc. Bar clamp
JP2007175820A (ja) * 2005-12-28 2007-07-12 Hitachi Metals Ltd 配管用接続工具
US8056446B1 (en) * 2008-03-11 2011-11-15 Dale K Wheeler Ratcheting adjustable wrench

Also Published As

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

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