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EP0854011B1 - Zange zum Greifen von Werkstücken verschiedener Abmessungen - Google Patents

Zange zum Greifen von Werkstücken verschiedener Abmessungen Download PDF

Info

Publication number
EP0854011B1
EP0854011B1 EP19970100807 EP97100807A EP0854011B1 EP 0854011 B1 EP0854011 B1 EP 0854011B1 EP 19970100807 EP19970100807 EP 19970100807 EP 97100807 A EP97100807 A EP 97100807A EP 0854011 B1 EP0854011 B1 EP 0854011B1
Authority
EP
European Patent Office
Prior art keywords
jaw
handle
handle member
intermediate portion
engaging
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 - Lifetime
Application number
EP19970100807
Other languages
English (en)
French (fr)
Other versions
EP0854011A1 (de
Inventor
Tool Design Corporation Hand
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.)
Hand Tool Design Corp
Original Assignee
Hand Tool Design Corp
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 Hand Tool Design Corp filed Critical Hand Tool Design Corp
Priority to EP19970100807 priority Critical patent/EP0854011B1/de
Priority to ES97100807T priority patent/ES2157487T3/es
Priority to DE1997604415 priority patent/DE69704415T2/de
Publication of EP0854011A1 publication Critical patent/EP0854011A1/de
Application granted granted Critical
Publication of EP0854011B1 publication Critical patent/EP0854011B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention relates to a utility plier for gripping workpieces of different sizes, and more particularly to a utility plier having an improved arrangement to avoid elastic fatigue of the torsion spring in Applicant's U.S. Patent Application US-A-5 660 089, published on August 26, 1997.
  • pliers have heretofore been provided, and some examples are US Patent No. 4,651,598 to Warheit and US Patent No. 4,662,252 to Warheit.
  • the pliers include longitudinal slots in the handle members thereof which would greatly reduce the strength of the handle members and such that the pliers would be easily damaged.
  • the french patent FR-A-2 456 592 describes a pair of pliers, comprising a first and a second members including a first and a second non-channeled jaw ends. a first and a second handle ends and a first and a second intermediate portions formed between said first and said second jaw ends and said first and said second handle ends respectively, an intermediate portion of a handle member including a rack means extending along the intermediate portion, means for biasing said second jaw end away from said first jaw end, a pawl means pivotally secured on an intermediate portion and including a toothed end for engaging with said rack means and including a contact end for engaging with said rack means and for preventing said toothed end from engaging with said rack means, and means for biasing said contact end of said pawl means to engage with said rack means.
  • the present invention is intended to provide an improved utility plier which mitigates and/or obviates the above problem.
  • a pair of pliers in accordance with the present invention comprises a first and a second members including a first and a second non-channeled jaw ends, a first and a second handle ends and a first and a second intermediate portions formed between the first and the second jaw ends and the first and the second handle ends respectively.
  • the first intermediate portion of the first handle member includes a pair of parallel planar members for slidably receiving the second intermediate portion of the second handle member therebetween.
  • the first intermediate portion of the first handle member includes a rack means located closer to the first handle end and includes a contact surface means located closer to the first jaw end.
  • the second handle member includes a stop means secured on the second jaw end thereof for engaging with the contact surface means and for preventing the second intermediate portion from disengaging from the first intermediate portion.
  • a pawl means is pivotally secured on the second intermediate portion and includes a toothed end for engaging with the rack means and includes a contact end for engaging with the rack means and for preventing the toothed end from engaging with the rack means. Furthermore, means for biasing the contact end of the pawl means to engage with the rack means is provided.
  • Two panels are pivotally coupled to the first handle end of the first handle member.
  • a plate is pivotally coupled to the second end of the second handle member and is pivotally coupled between the panels at a shaft.
  • the plate includes a curved slot having a curvature located at the shaft and a hook portion.
  • Each panel includes a protrusion extending therefrom and slidably engaged with the curved slot so as to limit a rotational movement between the panels and the plate.
  • Each panel includes a rounded relatively thicker section through which the shaft extends.
  • Each panel further includes a stub extending therefrom and facing each other.
  • a torsion spring is mounted between the stubs.
  • the torsion spring includes a first end attached to the first handle member and a second end attached to the hook portion of the plate.
  • the second jaw end is moved away from the first jaw end so as to grip a workpiece of large size.
  • the stop means is caused to engage and to move along the contact surface means when the first and the second handle ends are moved toward each other in order to move the first and the second jaw ends toward each other so as to grip the workpiece.
  • the second handle member is moved relative to the first handle member so as to rotate the pawl means in order to engage with the toothed end with the rack means and so as to secure the first and the second intermediate portions together when the first and the second jaw ends grip the workpiece therebetween.
  • a utility plier in accordance with the present invention comprises a pair of parallel handle members 3, 4 each including a jaw end, a handle end, and an intermediate portion.
  • the handle member 3 includes two planar members 31 which, in turn, have two spacers 331 and 332 fixed between jaw ends 301 thereof and which have a spacer 32 secured between handle ends thereof by rivets 321, 322.
  • the jaw end 301 of each planar member 31 includes a number of teeth 311 defined in therein for engaging with a workpiece.
  • Each planar member 31 further includes a rack 302, 312 formed in one edge of an intermediate portion thereof and located closer to the handle end.
  • Each planar member 31 further includes a contact surface 316 located closer to the jaw end 301.
  • the handle member 4 also includes two planar members 40 and 41 which, in turn, have a spacer 42 fixed between handle ends thereof by rivets 421 and 422 and which have two stops 431, 432 fixed on jaw ends 401 thereof.
  • the jaw end 401 of each planar member 41 includes a number of teeth 411 defined in therein for engaging with the workpiece, together with the jaw ends 301 of the handle member 3.
  • the stops 431, 432 each include a contact edge 4311, 4322 for engaging with the respective contact surface 316 of the handle member 3 and for preventing the jaw ends 401 from disengaging from the handle member 3.
  • the intermediate portion of the handle member 4 is slidably engaged between the intermediate portions of the planar members 31 of the handle member 3.
  • a spring 47 is coupled between the intermediate portion of the handle member 4 and the handle end 30 of the handle member 3 so as to bias the jaw end of the handle member 4 away from the jaw end of the handle member 3.
  • a rod 44 is fixed in the intermediate portion of the handle member 4 and includes two ends 441 extended therefrom.
  • a pair of pawls 45 and 46 are pivotally coupled to the rod 44 and are respectively engaged on both sides of the handle member 4 and each includes a toothed end 451, 461 for engaging with the respective rack 302, 312.
  • a pair of covers 34 and 37 are secured to the intermediate portion of the handle member 3 and are respectively secured to the ends 441 of the rod 44 for covering the pawls 45 and 46.
  • a pair of springs 452, 462 are biased between the covers 34, 37 and the pawls 45, 46 for biasing rounded contact ends 453, 463 of the pawls 45, 46 to engage with the racks 302, 312, best shown in Figs. 3 and 4.
  • a plate 38 has one end pivotally coupled to the handle member 4 by an axle 404 and has a curved slot 382 defined therein.
  • the plate 38 further includes a hook portion 383 which will be explained later.
  • a pair of panels 35 and 36 each has one end pivotally coupled to the handle member 3 by an axle 304 and are pivotally coupled to the plate 38 at a shaft 355 and have a protrusion 352, 362 formed thereon.
  • the protrusion 352, 362 extends into the curved slot 382 so as to slide therealong.
  • the curved slot 382 of the plate 38 has a curvature center located at the shaft 355 such that the panels 35, 36 and the plate 38 may be rotated relative to each other about the shaft 355.
  • each panel 35, 36 includes a rounded relatively thicker section 351, 361 through which the shaft 355 extends.
  • each panel 35, 36 includes a stub 354, 364 extending therefrom and facing each other so as to mount a torsion spring 353 therebetween.
  • the torsion spring 353 is mounted between the stubs 354 and 364 and around the axle 304.
  • the torsion spring 353 includes a first end in the form of an elastic band 3531 bearing against the handle member 3 and a second end 3532 attached to the hook portion 383 of the plate 38.
  • the spring 47 biases the jaw ends of the handle members 3, 4 away from each other, and the rounded contact ends 453, 463 of the pawls 45, 46 are biased to engage with the racks 302, 312 by the springs 452, 462.
  • the axle 404, the shaft 355, and the axle 304 are in alignment with one another.
  • the axle 404, the shaft 355, and the axle 304 are in an obtuse angle.
  • the spring 47 is extended when applying force to the handle members 3, 4.
  • the contact edges 4311, 4322 of the stops 431, 432 disengage from the contact surfaces 316 of the handle member 3.
  • the springs 452, 462 urge the pawls 45, 46 to engage with the racks 302, 312.
  • the panels 35, 36 are forced to rotate relative to the plate 38 about the shaft 355 and the protrusions 352, 362 slide along the curved slot 382 of the plate 38.
  • the torsion spring 353 is in torsion, as shown in Fig. 5. At this moment, the workpiece is firmly gripped between the jaw ends of the handle members 3, 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Scissors And Nippers (AREA)

Claims (1)

  1. Zange, umfassend
    ein erstes und ein zweites Element (3, 4), enthaltend ein erstes und ein zweites, ungenutetes Backenende (301, 401), ein erstes und ein zweites Handgriffsende (30, 40) und einen ersten und einen zweiten Zwischenabschnitt, die zwischen dem ersten und dem zweiten Backenende (301, 401) und dem ersten und dem zweiten Handgriffsende (30, 40) jeweils gebildet sind, wobei der erste Zwischenabschnitt des ersten Handgriffselements ein Paar von parallelen ebenen Elementen (30, 31) enthält, um den zweiten Zwischenabschnitt des zweiten Handgriffselements (4) dazwischen verschiebbar aufzunehmen, wobei der erste Zwischenabschnitt des ersten Handgriffselements (3) ein Zahnstangenmittel (302, 312) enthält, das sich näher am ersten Handgriffsende befindet, und ein Kontaktflächenmittel (316) enthält, das sich näher am ersten Backenende (301) befindet, wobei das zweite Handgriffselement ein am zweiten Backenende (401) befestigtes Anschlagmittel (431, 432) enthält, um mit dem Kontaktflächenmittel (316) in Eingriff zu treten und um zu verhindern, daß der zweite Zwischenabschnitt vom ersten Zwischenabschnitt außer Eingriff tritt,
    ein Mittel (47) zum Vorspannen des zweiten Backenendes (401) vom ersten Backenende (301) fort,
    ein Sperrklinkenmittel (45, 46), das schwenkbar am zweiten Zwischenabschnitt befestigt ist und ein zahnversehenes Ende (451, 461) enthält, um mit dem Zahnstangenmittel (302, 312) in Eingriff zu treten, und ein Kontaktende (453, 463) enthält, um mit dem Zahnstangenmittel (302, 312) in Eingriff zu treten und um zu verhindern, daß das zahnversehene Ende (451, 461) mit dem Zahnstangenmittel (302, 312) in Eingriff tritt,
    ein Mittel (452, 462), um das Kontaktende (453, 463) des Sperrklinkenmittels (45, 46) unter Vorspannung zu halten, damit es mit dem Zahnstangenmittel (302, 312) in Eingriff tritt,
    zwei schwenkbar mit dem ersten Handgriffsende (30) des ersten Handgriffselements (3) gekuppelte Platten (35, 36), eine schwenkbar mit dem zweiten Ende (40) des zweiten Handgriffselements (4) gekuppelte und schwenkbar zwischen den Platten (35, 36) am Schaft (355) gekuppelte Scheibe (38), wobei die Scheibe (38) einen gebogenen Schlitz (382) mit einer Krümmung, der sich am Schaft (355) befindet, und einen Hakenabschnitt (383) enthält, wobei die Platte einen sich von ihr fort erstreckenden Vorsprung (352, 362) enthält und verschiebbar im gebogenen Schlitz (382) in Eingriff steht, um eine Drehbewegung zwischen den Platten (35, 36) und der Scheibe (38) zu begrenzen, wobei jede Platte (35, 36) einen abgerundeten, verhältnismäßig dickeren Abschnitt (351, 361) enthält, durch den sich der Schaft (355) erstreckt, wobei jede Platte (35, 36) weiter einen Stutzenabschnitt (354, 364) enthält, der sich von ihr fort erstreckt, wobei sich diese gegenüberliegen, und
    eine Torsionsfeder (353), die zwischen den Stutzenabschnitten (354, 364) angebracht sind, wobei die Torsionsfeder (353) ein erstes Ende (3531), das am ersten Handgriffselement (3) angebracht ist und ein zweites Ende (3532) enthält, das am Hakenabschnitt (383) der Scheibe (38) angebracht ist,
    wobei das zweite Backenende (401) vom ersten Backenende (301) fort bewegt wird, um ein Werkstück mit großer Abmessung zu greifen, wobei bewirkt wird, daß das Anschlagmittel (431, 432) mit dem Kontaktflächenmittel (316) und entlang diesem bewegt wird, wenn das erste und das zweite Handgriffsende (30, 40) zueinander hin bewegt werden, um das erste und das zweite Backenende (301, 401) zueinander zu bewegen, um das Werkstück zu greifen, wobei das zweite Handgriffselement in bezug auf das erste Handgriffselement bewegt wird, um das Sperrklinkenmittel (45, 46) zu drehen, um mit dem zahnversehenen Ende (451, 461) mit dem Zahnstangenmittel (302, 312) in Eingriff zu treten und um den ersten und den zweiten Zwischenabschnitt zusammen zu befestigen, wenn das erste und das zweite Backenende (301, 401) das Werkstück dazwischen greifen.
EP19970100807 1997-01-20 1997-01-20 Zange zum Greifen von Werkstücken verschiedener Abmessungen Expired - Lifetime EP0854011B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19970100807 EP0854011B1 (de) 1997-01-20 1997-01-20 Zange zum Greifen von Werkstücken verschiedener Abmessungen
ES97100807T ES2157487T3 (es) 1997-01-20 1997-01-20 Alicate para coger piezas de trabajo de diferentes tamaños.
DE1997604415 DE69704415T2 (de) 1997-01-20 1997-01-20 Zange zum Greifen von Werkstücken verschiedener Abmessungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970100807 EP0854011B1 (de) 1997-01-20 1997-01-20 Zange zum Greifen von Werkstücken verschiedener Abmessungen

Publications (2)

Publication Number Publication Date
EP0854011A1 EP0854011A1 (de) 1998-07-22
EP0854011B1 true EP0854011B1 (de) 2001-03-28

Family

ID=8226381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970100807 Expired - Lifetime EP0854011B1 (de) 1997-01-20 1997-01-20 Zange zum Greifen von Werkstücken verschiedener Abmessungen

Country Status (3)

Country Link
EP (1) EP0854011B1 (de)
DE (1) DE69704415T2 (de)
ES (1) ES2157487T3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2347672C2 (ru) * 2003-05-22 2009-02-27 Книпекс-Верк К.Густав Пуч Кг Клещи, приводимые в действие одной рукой
RU2464159C2 (ru) * 2009-12-15 2012-10-20 Фискарс Брендз Финланд Оу Аб Способ изготовления рукоятки ручного инструмента и рукоятка ручного инструмента
JP2016002616A (ja) * 2014-06-17 2016-01-12 トヨタ自動車東日本株式会社 ホースバンド取付工具

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6000303A (en) * 1998-03-05 1999-12-14 Chang; Jong-Shing Pliers
DE19940485B4 (de) 1998-09-07 2019-01-24 Knipex-Werk C. Gustav Putsch Kg Einhandbetätigbare, sich selbst zustellende Zange
EP1112149B1 (de) * 1998-09-07 2003-11-12 KNIPEX-WERK C. Gustav Putsch KG Einhandbetätigbare, sich selbst zustellende zange
US6227081B1 (en) * 1999-08-13 2001-05-08 B!G Ventures, L.L.C. Pliers with force augmentation and self-adjustment capability
DE102008012969A1 (de) * 2008-03-06 2009-09-10 Will Werkzeuge Gmbh & Co. Kg Einhandbetätigbare Zange

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232152A (en) * 1964-10-26 1966-02-01 Wendell S Miller Alternative fulcrum hand tool
FR2052020A5 (de) * 1969-07-11 1971-04-09 Stephanoises Forges
IT969856B (it) * 1972-10-25 1974-04-10 Costantini D Utensile manuale portatile parti colarmente pinze per stringere en tro delle ganasce degli oggetti aventi delle grossezze molto varie
FR2456592A1 (fr) * 1979-05-15 1980-12-12 Fauvarque Gervais Pince ou clef de serrage a rapprochement rapide des mors
US4651598B1 (en) 1984-09-26 1997-09-09 William A Warheit Self-adjusting utility plier
US4662252A (en) 1985-09-18 1987-05-05 Warheit William A Auto-grip pliers
US4893530A (en) * 1987-03-19 1990-01-16 Warheit William A Plier-type tool
US5060543A (en) * 1990-01-30 1991-10-29 Warheit William A Self-adjusting tool
FR2713124A1 (fr) * 1993-11-30 1995-06-09 Chareire Jean Louis Pince étau automatique.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2347672C2 (ru) * 2003-05-22 2009-02-27 Книпекс-Верк К.Густав Пуч Кг Клещи, приводимые в действие одной рукой
RU2464159C2 (ru) * 2009-12-15 2012-10-20 Фискарс Брендз Финланд Оу Аб Способ изготовления рукоятки ручного инструмента и рукоятка ручного инструмента
JP2016002616A (ja) * 2014-06-17 2016-01-12 トヨタ自動車東日本株式会社 ホースバンド取付工具

Also Published As

Publication number Publication date
ES2157487T3 (es) 2001-08-16
DE69704415D1 (de) 2001-05-03
DE69704415T2 (de) 2001-10-18
EP0854011A1 (de) 1998-07-22

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