EP2406040B1 - Serre-tube à mâchoires à ouverture réglable - Google Patents

Serre-tube à mâchoires à ouverture réglable Download PDF

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Publication number
EP2406040B1
EP2406040B1 EP10710257.6A EP10710257A EP2406040B1 EP 2406040 B1 EP2406040 B1 EP 2406040B1 EP 10710257 A EP10710257 A EP 10710257A EP 2406040 B1 EP2406040 B1 EP 2406040B1
Authority
EP
European Patent Office
Prior art keywords
wrench
section
grip
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.)
Active
Application number
EP10710257.6A
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German (de)
English (en)
Other versions
EP2406040A1 (fr
Inventor
Georg Holland-Moritz
Heiko Rosenbusch
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
Original Assignee
Rennsteig Werkzeuge GmbH
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Publication date
Application filed by Rennsteig Werkzeuge GmbH filed Critical Rennsteig Werkzeuge GmbH
Publication of EP2406040A1 publication Critical patent/EP2406040A1/fr
Application granted granted Critical
Publication of EP2406040B1 publication Critical patent/EP2406040B1/fr
Active legal-status Critical Current
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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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06—Joints
    • B25B7/10—Joints with adjustable fulcrum
    • 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

Definitions

  • the invention relates to a pipe wrench with adjustable jaw width.
  • the pipe wrench has a first pincer part with an outer pincer jaw, a finger-side pincer grip and a lever extension extending therebetween. Furthermore, a second pliers part is provided with an inner pliers jaw and a palm-side pliers handle. Finally, the pipe wrench comprises a pivot pin, which connects the two pliers parts crossing each other.
  • Pipe wrenches in various embodiments and purposes are known in the art. Pipe wrenches are by their lever mechanism z. B. unlike Wasserpumpenzangen self-locking. As a result, when the jaw width is set roughly, the two clamp arms no longer have to be pressed together in order to grip the workpiece firmly. To rotate the gripped workpiece only has to be pressed on the ergonomically shaped upper pliers handle, which lies in the palm of the user. Pipe wrenches are usually designed in lengths from 250 to 700 mm and with jaw widths up to 130 mm. A special design used for Maulweiteneingnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagnagna
  • the DE 196 03 507 discloses a pipe wrench having two crossing tong legs.
  • a support member which is articulated on the first pliers limb and has an internal toothing, an adjustment and locking of the two mutually movable pliers limbs is realized.
  • the jaw opening is fixed by the engagement of the internal toothing of the support member in a counter-toothing of the second Pliers leg.
  • a disadvantage of this pipe wrench is that to readjust the jaw width, the two gripper handles must be pressed far apart to adjust the pliers in a low-wear manner. Furthermore, the pliers realize no toggle, so that the force is limited to the clamped workpiece.
  • a water pump pliers with adjustable mouth width with two crossing pliers, which are rotatably connected by a hinge pin.
  • the pliers allow the adjustment and gradual locking of the two pliers parts.
  • a slot-shaped opening is provided, which is attached to a pliers part and has a sawtooth-toothed rack.
  • the rack toothing is associated with a counter toothing, which is fixedly mounted on the hinge pin.
  • the counter-toothing is adjustable in the direction of the course of the crests of the tooth tips against the force of a spring, between a locked and an unlocked position.
  • the hinge pin fulfills a dual function as a carrier of the counter-toothing and as a bearing of the two pliers parts.
  • EP 0 774 324 B1 is also a water pump pliers described in which a similar device for adjusting and locking the two rotatably mounted pliers parts is used.
  • the hinge pin also fulfills the aforementioned dual function here.
  • the DE 199 24 664 shows a pair of pliers, which consists of two pliers parts that are adjustable, crossing and connected by a swivel joint.
  • a support member In the crossing region of the two pliers parts, a support member is guided on the first pliers part.
  • the second pliers part At the fork-shaped side of the support member is the second pliers part articulated by hinge pins.
  • a mutual adjustment and gradual locking of the two pliers parts is realized by a locking device.
  • a locking element which is located in the pliers handle, is equipped with a toothing, which engages in the sawtooth-toothed rack of the support member.
  • the US 6041680 shows a pipe wrench according to the preamble of claim 1.
  • the invention is therefore based on the object to provide an improved pipe wrench with quick adjustment, which avoids the disadvantages explained.
  • an easy-to-use and low-cost design is sought, which simplifies the technological process in the production of pipe wrench.
  • the pipe wrench according to the invention allows a quick and easy adjustment of the jaw width and brings by using a toggle lever high forces on the clamped workpiece, without requiring an excessive expenditure of force by the user. At the same time, the production cost of the pipe wrench is drastically reduced, without the stability of the pliers is deteriorated.
  • the pipe wrench according to the invention comprises a first pliers part and a second pliers part, which are crossing and rotatably connected to each other by means of a hinge pin.
  • the first pliers part has an outer pliers jaw and a finger-side pliers handle, and an intermediate lever extension with a back-side portion.
  • this lever extension runs a first slot, which has an axial orientation.
  • the first pliers part has a first offset, which connects the two sections of the lever extension and leads to an axial offset between these two sections.
  • the second pliers part has an inner pliers jaw, a palm-side pliers handle and a fürfädelabrough extending therebetween, which lies in the main plane of extension.
  • the fürfädelabites provides a fürfädelö réelle that allows the threading of the finger-side pliers handle - and the lever extension of the first pliers part to cross the Zangemaschine.
  • An advantage of this embodiment is that the width of the palm of the palm-side forceps handle of the second pliers part need not be limited, since this part does not have to be threaded through the other pliers part, as is common in known pliers. This allows a better power transmission from the user via the palm-side tong grip on the jaw. Furthermore, the arrangement of the fürfädelabitess in the second pliers part is advantageous because the threading of the narrower finger-side pliers handle and the lever extension through the fürfädelö réelle is possible without additional complicated processing processes incurred, such as the spreading and subsequent compression of the fürfädelö réelle. Despite dispensing with such forming processes, both pliers parts can be manufactured in one piece.
  • the pipe wrench further comprises a support member which is supported on a handle-side portion of the lever extension of the first pliers part and comprises a locking means.
  • the locking means allows a locking or unlocking of the support point of the support member to move the support point along the handle-side portion of the first pliers part.
  • the pliers parts In the unlocked position, the pliers parts can be adjusted to each other in the axial direction, so as to achieve a quick preset the jaw width on the workpiece.
  • the default setting is advantageously done in one go.
  • the locking means is preferably a locking bolt having a toothed portion and a non-toothed portion.
  • the toothing on the locking bolt extends, for example, only on an axial portions of the length of the locking bolt, so that between locked and unlocked position can be switched by axial displacement of the locking bolt.
  • the unlocking of the lock can be achieved in which the user actuates the lock pin.
  • the locking bolt shifts perpendicular to the main extension plane of the pliers in the second slot.
  • the unlocked position is maintained as long as the user exerts a force on the locking bolt. If the user releases the locking pin, it returns to the locking position due to a spring force which is advantageously applied to a spring element.
  • a spring element may for example be a leaf spring.
  • the unlocking of the lock is released, in which the user pivots with one hand, the support member to its backside bearing point.
  • the toothing between the locking bolt and the second slot which has only one longitudinal side of a row of teeth in this design dissolves.
  • the first pliers part can now be moved in the axial direction to achieve a new adjustment of the mouth width.
  • An advantage of this design is the easy setting of the appropriate mouth width (automatic quick release). If the user attaches the pipe wrench to the workpiece at, for example, maximum opening of the jaw opening and lets go of the first pliers part, the toothed region of the locking bolt ratchets past the inner toothing of the second oblong hole. The first pincer part moves downwardly in the axial direction, whereby the workpiece is immediately clamped between the two pincer jaws and the user can start working.
  • a quick adjustment of the jaw width is possible. It is advantageous if a slightly larger distance remains between the palm-side forceps handle and the finger-side forceps handle, which allows rapid gripping the palm-side forceps handle.
  • This user-friendly grip distance is through a torsion spring supported, which is arranged around the articulation of the support member at a second offset of the second pliers part. In this case, press a first spring leg against the support member and a second against the second crank of the second pliers part.
  • the support member has a stop lug which abuts when closing the pipe wrench on the palm-side pliers handle of the second pliers part to ensure a minimum distance between the pliers handles at all jaw opening widths.
  • Fig. 1 shows an overview of a first preferred embodiment of a pipe wrench 01.
  • the pipe wrench 01 comprises a first pliers part 02 and a second pliers part 20, which in the FIGS. 2 and 3 are shown in detail.
  • the first pliers part 02 has an outer pliers jaw 04, a finger-side pliers grip 06 and an extending therebetween lever extension 08, which in turn is divided into a back-side portion 10 and handle-side portion 12. Between the back-side portion 10 and the handle-side portion 12 extends a first crank 13, which causes an axial offset between the two sections 10, 12 ( Fig. 3 ). The first crank 13 extends approximately at an angle of ⁇ 45 ° to the adjacent sections of the lever extension 08.
  • first slot 14 In the back-side section 10 of the first pliers part 02 extends in the axial direction, a first slot 14, which assumes a leadership function.
  • a hinge pin 16 which extends through the first slot 14 in the first pliers part 02 and through a guide bore 18 in the second pliers part 20, the first pliers part 02 and the second pliers part 20 are interconnected and rotatably connected to each other.
  • the pliers parts 02, 20 remain displaceable in the axial direction against each other.
  • the second tong part 20 comprises an inner forceps jaw 22, a palm-side forceps handle 24 and a thread-through portion 26 extending therebetween.
  • the thread-through portion 26 has a fürfädelö réelle 27, which lies in the main plane of extension of the pliers and between the two dashed lines 27a (FIG. Fig. 2 ). In this area, the thread-through section is thus formed by two opposing material plates, between which the thread-through opening 27 extends.
  • the fürfädelö Sharing allows threading through the finger-side pliers handle 06 and the lever extension 08 of the first pliers part 02.
  • the finger-side pincer grip 06 has an outer end surface 07, which is oriented perpendicular to the main extension plane and is wider than the remaining portion of the finger-side forceps handle, so that it has a T-shape in cross section.
  • a bulge 29 is provided in the back-side portion 10 of the fürfädelö réelle 27, whose free cross-section is greater than that of the fürfädelötechnisch.
  • a second crank 28 to which a support member 30 is articulated with its back-side end.
  • the second crank 28 is angled relative to the fürfädelabrough 26 about 60 ° to 80 °.
  • the articulation can be done for example with a bolt 31.
  • the pin 31 Relative to the longitudinal axis of the pliers parts, the pin 31 is located slightly closer to the pliers jaws than the pivot pin 16, about which pivot the pliers parts.
  • the bolt 31 is closer to the second pliers jaw 22 than the pivot pin 16.
  • a locking means 32 on the handle side portion 12 of the lever extension 08 of the first pliers part 02.
  • the locking means 32 formed support point along the handle-side portion 12 variable to move the two pliers 02, 20 axially to each other and thus adjust the jaw width between the two jaws 04, 22.
  • a second slot 34 is provided with an internal toothing 36, into which an external toothing of the locking means 32 engages and can be adjusted there in stages.
  • the locking means 32 can assume two positions for unlocking or locking the support point of the support member 30 on the grip-side portion 12 of the lever extension.
  • the lock can be unlocked by the user operating a locking bolt 38 having a toothed portion and a non-toothed portion disposed along the axis of the locking bolt 38 one behind the other.
  • the locking pin 38 shifts perpendicular to the main extension plane of the pliers in the second slot 34, so that the toothed portion of the locking pin out of engagement with the internal teeth 36 in the second slot 34 passes. In this position of the locking bolt re-adjustment of the jaw width can be made.
  • a spring element for example a leaf spring 44, is arranged so that its spring force urges the locking bolt 38 into the locking position.
  • Fig. 4 shows a schematic representation of a second embodiment of the pipe wrench 01 according to the invention.
  • the essential difference from the first embodiment described above lies in the design of the locking means 32 and in the manner of unlocking and locking.
  • the lock is unlocked by the user pivoting the support member 30 about the bolt 31 toward the handle-side forceps grip 24 of the second tongue part 20.
  • the lock between the locking means 32 and the second slot 34 is released, and the first Zangeteil 02 can be moved in the axial direction.
  • the support member 30 is pivoted back by spring force and the toothed portion of the locking means 32 engages in the only one-sided internal toothing of the second elongated hole 34 here.
  • Fig. 5 shows three views of the support member 30, as used in the second embodiment of the pipe wrench.
  • the support member has a stop lug 47 which abuts when closing the pipe wrench 01 on the palm-side pliers handle 24 of the second pliers part 20.
  • the support member has a slightly curved U-shape, each on the backside End and at the handle end has a bore, wherein a first bore 49 for articulation on the second crank 28 of the second pliers member 20 is used and a second bore 50 of the attachment of the locking means 32 is used.
  • Fig. 6 a detailed view of the first pliers part 02 used in the second embodiment, which differs from the embodiment described above only in that in the second slot 24 only one-sided internal toothing is mounted.

Landscapes

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

Claims (11)

  1. Pince serre-tubes (01) à ouverture de pince réglable, comprenant :
    - un premier élément de pince (02) avec une mâchoire de pince extérieure (04), un manche de pince (06) côté doigts et une prolongation de levier (08) passant entre les deux avec un segment (10) côté mâchoire, dans lequel passe axialement un premier trou oblong (14), et avec un segment (12) côté manche à axe décalé, se raccordant par le biais d'un premier coude (13),
    - un deuxième élément de pince (20) avec une mâchoire de pince (22) intérieure, un manche de pince (24) côté de la paume de la main et un segment d'enfilage (26) passant entre les deux, qui possède une ouverture d'enfilage (27) située dans le plan d'extension principal, qui permet d'enfiler le manche de la pince (06) côté doigts et de la prolongation de levier (08) du premier élément de pince (02),
    - un axe de pivotement (16) qui s'étend à travers le premier trou oblong (14) dans le premier élément de pince (02) et à travers un trou de guidage (18) dans le segment d'enfilage (26) du deuxième élément de pince (20), pour réunir les deux éléments de pinces entre eux de manière croisée,
    - un élément de support (30), caractérisée en ce que l'élément de support est articulé sur son extrémité côté mâchoire de manière pivotante sur un deuxième coude (28) passant entre le segment d'enfilage (26) et la mâchoire de pince intérieure (22) et vient en appui sur son extrémité côté manche par un moyen d'arrêt (32) sur le segment côté manche (12) de la prolongation de levier (08) du premier élément de pince (02), le point d'appui de l'élément de support (30) pouvant être modifié le long du segment côté manche (12) pour déplacer les deux éléments de pince (02,20) dans le sens axial l'un par rapport à l'autre et régler de ce fait la largeur d'ouverture entre les deux mâchoires de pince (04,22).
  2. Pince serre-tubes selon la revendication 1 caractérisée en ce que le moyen d'arrêt (32) qui passe axialement dans le segment côté manche (12) de la prolongation de levier (08), peut être déplacé dans un deuxième trou oblong (34) et peut être réglé entre une position verrouillée et une position déverrouillée.
  3. Pince serre-tubes selon la revendication 2 caractérisée en ce que le moyen d'arrêt (32) comprend un axe de verrouillage (38) qui comprend, le long de son axe, une zone dentée et non dentée situées l'une derrière l'autre, la zone dentée venant en prise dans la position verrouillée dans une denture intérieure (36) dans le deuxième trou oblong (34) et la denture étant mise hors prise par le déplacement axial de l'axe de verrouillage (38).
  4. Pince serre-tubes selon la revendication 2 caractérisée en ce que le moyen d'arrêt (32) comprend un axe de verrouillage (38) qui compprend une zone dentée et non dentée, qui sont disposées sur des segments périphériques opposés, la zone dentée pouvant être mise hors prise dans le deuxième trou oblong (34) par pivotement de l'élément de support (32) à partir d'une denture intérieure (36) unilatérale.
  5. Pince serre-tubes selon l'une quelconque des revendications 1 à 4 caractérisée en ce que l'ouverture d'enfilage (27) possède un écartement qui est plus grand que l'épaisseur du manche de pince (06) côté doigts de sorte que celui-ci peut être enfilé sans déformer le segment (10) côté mâchoire.
  6. Pince serre-tubes selon l'une quelconque des revendications 1 à 5 caractérisée en ce que le manche de pince (06) côté doigts comporte une surface frontale extérieure (07) qui est plus large que la section restante du manche de pince (06) côté doigts et en ce qu'une courbure (29) est prévue dans le segment (10) côté mâchoire de l'ouverture d'enfilage (27) dont la section ouverte correspond à la section de la surface frontale (07).
  7. Pince serre-tubes selon l'une quelconque des revendications 1 à 6 caractérisée en ce que l'élément de support (30) comporte un élément à ressort (44) dont la force de ressort agit sur le moyen d'arrêt (32) pour repousser celui-ci dans une position de verrouillage.
  8. Pince serre-tubes selon l'une quelconque des revendications 1 à 7 caractérisée en ce qu'un ressort de renvoi est tendu entre l'élément de support (30) et le deuxième coude (28) du deuxième élément de pince (20), qui crée l'ouverture d'écartement de la pince serre-tubes (01).
  9. Pince serre-tubes selon la revendication 4 caractérisée en ce que l'élément de support (30) comporte une came de butée (47) qui vient buter sur le deuxième élément de pince (20) lors de la fermeture de la pince serre-tubes (01).
  10. Pince serre-tubes selon l'une quelconque des revendications 1 à 9 caractérisée en ce que les deux éléments de pince (02,20) sont constitués respectivement en une seule pièce.
  11. Pince serre-tubes selon l'une quelconque des revendications 1 à 10 caractérisée en ce que le point d'articulation (31) de l'élément de support (30) est disposé sur le deuxième coude (28) passant entre le segment d'enfilage (26) et la mâchoire de pince intérieure (22) dans la direction de l'axe longitudinal des éléments de pince plus près sur les mâchoires de pince (02,20) que l'axe d'articulation (16) .
EP10710257.6A 2009-03-11 2010-03-08 Serre-tube à mâchoires à ouverture réglable Active EP2406040B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009001497 2009-03-11
PCT/EP2010/052928 WO2010102986A1 (fr) 2009-03-11 2010-03-08 Serre-tube à mâchoires à ouverture réglable

Publications (2)

Publication Number Publication Date
EP2406040A1 EP2406040A1 (fr) 2012-01-18
EP2406040B1 true EP2406040B1 (fr) 2016-05-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10710257.6A Active EP2406040B1 (fr) 2009-03-11 2010-03-08 Serre-tube à mâchoires à ouverture réglable

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EP (1) EP2406040B1 (fr)
PL (1) PL2406040T3 (fr)
WO (1) WO2010102986A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108789197B (zh) * 2017-04-28 2024-09-03 杭州巨星科技股份有限公司 一种张合装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303369A1 (de) 1983-02-02 1984-08-02 Knipex-Werk C. Gustav Putsch, 5600 Wuppertal Wasserpumpenzange
DE9113870U1 (de) * 1991-08-08 1992-12-10 Knipex-Werk C. Gustav Putsch, 5600 Wuppertal Zange mit zwei Zangenschenkeln
DE19603507A1 (de) 1996-02-01 1997-08-07 Gedore Werkzeugfab O Dowidat Rohrzange bzw. Eckrohrzange
DE29806998U1 (de) * 1998-04-17 1998-07-02 Wang, Jan Hel, Da Li, Taichung Klemmwerkzeug
US6041680A (en) * 1998-11-24 2000-03-28 Wang; Yen-Yu Pincers
DE19924664A1 (de) 1999-05-28 2000-11-30 Lothar Bludszus Zange mit verstellbarer Maulweite

Also Published As

Publication number Publication date
WO2010102986A1 (fr) 2010-09-16
PL2406040T3 (pl) 2016-10-31
EP2406040A1 (fr) 2012-01-18

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