EP0254916B1 - Tenailles pour ouvertures étroites - Google Patents

Tenailles pour ouvertures étroites Download PDF

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Publication number
EP0254916B1
EP0254916B1 EP87109742A EP87109742A EP0254916B1 EP 0254916 B1 EP0254916 B1 EP 0254916B1 EP 87109742 A EP87109742 A EP 87109742A EP 87109742 A EP87109742 A EP 87109742A EP 0254916 B1 EP0254916 B1 EP 0254916B1
Authority
EP
European Patent Office
Prior art keywords
pliers
hand levers
area
hand
levers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP87109742A
Other languages
German (de)
English (en)
Other versions
EP0254916A1 (fr
Inventor
Hans Wiemer
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.)
Vbw Vereinigte Beckersche Werkzeugfabriken & GmbH
Original Assignee
Vbw Vereinigte Beckersche Werkzeugfabriken & Co KG GmbH
Vbw Vereinigte Beckersche Werkzeugfabriken & Co KG 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 Vbw Vereinigte Beckersche Werkzeugfabriken & Co KG GmbH, Vbw Vereinigte Beckersche Werkzeugfabriken & Co KG GmbH filed Critical Vbw Vereinigte Beckersche Werkzeugfabriken & Co KG GmbH
Priority to AT87109742T priority Critical patent/ATE46471T1/de
Publication of EP0254916A1 publication Critical patent/EP0254916A1/fr
Application granted granted Critical
Publication of EP0254916B1 publication Critical patent/EP0254916B1/fr
Expired 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
    • B25B7/12—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

Definitions

  • the invention relates to a lift-translated pliers, in particular bolt cutters, each with a pair of two-armed die jaws and hand levers, which are each articulated to one another and do not cross in the region of the articulation points, and with connecting joints between the mutually facing ends of the die jaws and hand levers.
  • the well-known bolt cutters as z. B. from DE-OS 32 21 072, have articulated to the cutting jaws on hand levers that are moved so far apart with the pliers around the articulation point of the hand levers that they form an angle of 90 degrees or more between them and thereby with the cutting jaws only inserted into openings, in particular spaces, of an upper reinforcement layer until the front outer sides of the hand levers rest on the opening edge. In most cases, this means that an underlying mat or reinforcement cannot be reached by the cutting edges. If a lower-lying reinforcement or reinforcement mat still has to be cut, the opening in the upper reinforcement between two reinforcement bars is often enlarged by additional cuts, so that the upper reinforcement is weakened. In addition, this is an additional workload.
  • the object of the invention is to improve pliers of the type mentioned in such a way that parts to be cut can be reached through narrow openings which are lower than the length of the two-armed cutting jaws relative to the opening.
  • This object is achieved in that in a region close to the cutting jaw levers the hand levers are bent at least twice in such a way that in this region the hand levers cross each other twice in the closed state of the pliers.
  • this area can also be introduced into the opening as an extension of the cutting jaws, so that even very deep reinforcements or wires to be cut can be reached.
  • the pliers are easy to handle and simple to manufacture. There is no additional work involved, and there is no need to enlarge the upper opening and thus weaken an upper or front reinforcement.
  • the first areas of the hand levers which are closest to the die jaw levers and which form the point of intersection closest to the die jaw levers when the pliers are closed, are approximately parallel to one another when the pliers are wide open. It is also advantageously proposed that the first regions of the hand levers form a width from outside to outside in the approximately parallel state when the pliers are wide open and approximately the same as the width of the cutting jaw levers from outside to outside.
  • a second area of the hand lever should also connect to the first area of the hand lever, which forms the second crossing point when the pliers are closed. In this case, a first and a second region of the hand levers can be bent toward one another and together form an inner angle facing the other hand lever, which is 60 to 120 degrees, in particular 80 to 100 degrees.
  • the regions which cross each other twice partially overlap one another laterally can also lie in a longitudinal slot of the second hand lever when the pliers are closed, so that the hand levers interlock in a manner similar to that which is already known for water pump pliers with an inserted sliding joint.
  • the stops strike the second region at the level of the second crossing point. This creates particularly easy to design and safe working stops.
  • the bolt cutter essentially consists of two pairs of levers, which are articulated to each other and to each other without crossing.
  • the two-armed cutting jaw levers 1, 2 have cutting edges 3, 4 at their free ends between the front jaws, which lie on one another in the bite cut.
  • the cutting jaw levers 1, 2 are articulated directly by a single central joint 5, the cutting edges being on the side, or the cutting jaw levers are articulated on both flat sides on one tab each by two screw journals, as is shown in German Offenlegungsschrift P 32 21 072, so that the cutting edges are in the axial direction of the pliers.
  • the cutting jaw levers 1, 2 are articulated to two-armed hand levers 8, 9 via connecting joints 10, 11 with pivot pins, in particular screw pins.
  • the two hand levers 8, 9 Near the connecting joints 10, 11, the two hand levers 8, 9 by a hinge pin, in particular screw pin with z. B. eccentric, hinged together.
  • an adjusting screw which is mounted in the first hand lever and represents the connection between the first hand lever and the connecting joint or the second hand lever, can act on this connecting joint 12 of the two hand levers.
  • the set screw is mounted so that it can move longitudinally in a hole in the first hand lever and in both directions by means of adjusting nuts directions of exercise.
  • the hand levers 8, 9 consist of forged pieces in the area of the joints 10, 11 and 12, onto which tubes 16, 17 are pushed to extend and form the grip areas. These forged intermediate pieces of both hand levers thus form the regions 14a, 14b which are closest to the cutting jaws and are connected with their front ends to the cutting jaws 1, 2 via the joints 10, 11.
  • these areas 14a, 14b are designed such that, when the pliers are closed, these areas cross each other twice in points 18 and 19 without being fastened or articulated there.
  • This first area 21 of both hand levers ends at a second bend turned to one side (second bend 22), which is made at an angle ⁇ of approximately 90 °.
  • This angle can be in a range from 60 to 120 °, in particular 80 to 100 °.
  • the areas 14a, 14b of the hand levers 8, 9 near the cutting jaws thus form two angularly bent areas between the attached pipes 16, 17 and the connecting joints 10, 11 and the connecting joint 12, the kinking taking place inwards in opposite directions, so that these areas intersect twice and the turning points 22 are on the outside when the pliers are closed. In the closed position, these areas enclose an approximately rectangular, in particular approximately square, opening 24 at the level of the bends 22. On the other hand, if the pliers are wide open, the areas 21 are essentially parallel to one another, the width B of the outer sides of the areas 21 being approximately the width C of the outer sides of the cutting jaw levers 1, 2.
  • the pliers can thus be inserted into the opening by the length of the first two regions 21 deeper than a conventional pliers.
  • the forged intermediate pieces of the two hand levers have stops 25, 26 in the areas 23 below the crossing point 19, each of which strikes the opposite hand lever at the level of the crossing point 19 when the pliers are closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Scissors And Nippers (AREA)
  • Shearing Machines (AREA)
  • Surgical Instruments (AREA)
  • Farming Of Fish And Shellfish (AREA)

Claims (8)

1. Tenailles démultipliées, en particulier coupe-boulons, avec à la fois une paire de leviers à mâchoires de coupe (1, 2) et de leviers à main (8, 9) à deux bras, qui sont respectivement articulés l'un à l'autre et ne se croisent pas dans la région des points d'articulation (5, 12), et avec des articulations de liaison (10, 11 ) entre les extrémités des leviers à mâchoires de coupe et à main tournées les unes vers les autres, caractérisées en ce que, dans une région proche des leviers à mâchoires de coupe (1, 2), les leviers à main (8, 9) sont respectivement recourbés au moins deux fois de telle manière que dans cette région (14a, 14b), les leviers à main se croisent deux fois (18, 19) à l'état de fermeture des tenailles.
2. Tenailles selon la revendication 1, caractérisées en ce que les premières régions (21) des leviers à main (8, 9), qui sont les plus voisines des leviers à mâchoires de coupe (1, 2) et qui forment le point de croisement (18) le plus voisin des leviers à mâchoires de coupe (1, 2) lorsque les tenailles sont fermées, sont sensiblement parallèles l'une à l'autre lorsque les tenailles sont largement ouvertes.
3. Tenailles selon la revendication 2, caractérisées en ce que les premières régions (21) des leviers à main, pour les tenailles largement ouvertes, forment en positions sensiblement parallèles, de face extérieure à face extérieure, une largeur (B) qui est sensiblement égale à la largeur (C) des leviers à mâchoires de coupe (1, 2) de face extérieure à face extérieure.
4. Tenailles selon la revendication 2 ou 3, caractérisées en ce qu'une deuxième région (23) des leviers à main se raccorde à la première région (21) des leviers à main, qui forme le deuxième point de croisement (19) pour les tenailles fermées.
5. Tenailles selon la revendication 4, caractérisées en ce que la première et la seconde régions (21, 23) des leviers à main (8, 9) sont recourbées l'une vers l'autre et forment l'une avec l'autre un angle intérieur (ß) tourné vers l'autre levier à main, qui est égal à 60 à 120 degrés, en particulier 80 à 100 degrés.
6. Tenailles selon l'une des revendications précédentes, caractérisées en ce que, pour les tenailles fermées, les régions (14a, 15b) des leviers à mains (8, 9) se croisant deux fois l'une l'autre se recouvrent partiellement latéralement l'une l'autre.
7. Tenailles selon l'une des revendications 1 à 5, caractérisées en ce que, pour les tenailles fermées, la région (14a, 14b) du premier levier à main croisant deux fois, est logée dans une fente longitudinale du deuxième levier à main.
8. Tenailles selon l'une des revendications précédentes avec des arrêts entre les leviers à main du côté poignée pour maintenir un écartement suffisant entre les poignées lorsque les tenailles sont fermées, les arrêts (25, 26) viennent en butée à hauteur du deuxième point de croisement (19) dans la deuxième région (23) pour les tenailles fermées.
EP87109742A 1986-07-31 1987-07-07 Tenailles pour ouvertures étroites Expired EP0254916B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109742T ATE46471T1 (de) 1986-07-31 1987-07-07 Hebeluebersetzte zange fuer enge oeffnungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3626078 1986-07-31
DE19863626078 DE3626078A1 (de) 1986-07-31 1986-07-31 Hebeluebersetzte zange fuer enge oeffnungen

Publications (2)

Publication Number Publication Date
EP0254916A1 EP0254916A1 (fr) 1988-02-03
EP0254916B1 true EP0254916B1 (fr) 1989-09-20

Family

ID=6306492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109742A Expired EP0254916B1 (fr) 1986-07-31 1987-07-07 Tenailles pour ouvertures étroites

Country Status (5)

Country Link
EP (1) EP0254916B1 (fr)
JP (1) JP2783798B2 (fr)
AT (1) ATE46471T1 (fr)
DE (2) DE3626078A1 (fr)
ES (1) ES2010694B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995550A2 (fr) * 1998-10-22 2000-04-26 Gerhard Rindle Coupe-boulons, notamment cisailles pour mats

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139687A1 (de) * 1991-12-02 1993-06-03 Schieber Universal Maschf Flachstrickmaschine
DE4427553C2 (de) * 1994-08-04 1998-06-10 Wezag Gmbh Werkzeug zum Crimpen, Schneiden, Pressen o. dgl.
AT1491U1 (de) * 1995-02-24 1997-06-25 Rennsteig Werkzeuge Gmbh Schneidwerkzeug, insbesondere bolzenschneider
WO2023077003A1 (fr) * 2021-10-28 2023-05-04 Milwaukee Electric Tool Corporation Outil de serrage à éléments transversaux

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB622431A (en) * 1947-03-24 1949-05-02 John Arvid Skoog Grip tongs for objects difficult of access
GB632551A (en) * 1947-12-18 1949-11-28 Leslie John Smyth Improvements in or relating to tools having a spring loaded scissor-like action
GB1098292A (en) * 1963-10-31 1968-01-10 Peter James Wilson Improvements in and relating to gripping and/or cutting tools
FR1542445A (fr) * 1965-09-17 1968-10-18 Omnium Nogentais Perfectionnement aux pinces à main
DE8620568U1 (de) * 1986-07-31 1986-09-11 VBW Vereinigte Beckersche Werkzeugfabriken GmbH & Co KG, 5630 Remscheid Hebelübersetzte Zange für enge Öffnungen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995550A2 (fr) * 1998-10-22 2000-04-26 Gerhard Rindle Coupe-boulons, notamment cisailles pour mats
EP0995550A3 (fr) * 1998-10-22 2002-09-04 Gerhard Rindle Coupe-boulons, notamment cisailles pour mats

Also Published As

Publication number Publication date
EP0254916A1 (fr) 1988-02-03
ES2010694B3 (es) 1989-12-01
ATE46471T1 (de) 1989-10-15
DE3760573D1 (en) 1989-10-26
DE3626078A1 (de) 1988-02-11
JP2783798B2 (ja) 1998-08-06
JPS6339715A (ja) 1988-02-20

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