EP0824996B1 - Pince à ouverture variable - Google Patents

Pince à ouverture variable Download PDF

Info

Publication number
EP0824996B1
EP0824996B1 EP97110983A EP97110983A EP0824996B1 EP 0824996 B1 EP0824996 B1 EP 0824996B1 EP 97110983 A EP97110983 A EP 97110983A EP 97110983 A EP97110983 A EP 97110983A EP 0824996 B1 EP0824996 B1 EP 0824996B1
Authority
EP
European Patent Office
Prior art keywords
spring
joint
leg
locking pin
gripping
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
EP97110983A
Other languages
German (de)
English (en)
Other versions
EP0824996A1 (fr
Inventor
Hans-Udo Erdmeier
Frank Emhardt
Joachim Krugmann
Jens-Uwe Schmidt
Sieghardt Schwandrau
Frank Suhr
Original Assignee
ERDMEIER HANS UDO
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 ERDMEIER HANS UDO filed Critical ERDMEIER HANS UDO
Publication of EP0824996A1 publication Critical patent/EP0824996A1/fr
Application granted granted Critical
Publication of EP0824996B1 publication Critical patent/EP0824996B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 invention relates to a gripper, as characterized in the preamble of claim 1.
  • a gripping pliers which consists of a pliers handle and a pliers bracket with a locking hole, each having a handle section and a jaw opposite the handle section, the pliers handle and the pliers bracket in a joint to one another Pivot axis are pivotally mounted and the joint has an engagement position and an adjustment position.
  • the forceps handle is provided with a slot in the area of the joint through which the forceps clip is inserted, so that the forceps handle engages around the forceps bar on both sides in the area of the joint.
  • An adjusting element which can be manually displaced in the direction of the pivot axis against a spring and which comprises a locking pin is provided for adjusting the engagement position and the adjustment position, the locking pin forming the bearing axis of the joint in the engagement position.
  • the pliers handle and the pliers bracket delimit a space in the area of the joint into which the locking pin can be pressed in against the bias of the spring.
  • the spring is adjacent to the pivot axis or arranged approximately coaxially to the pivot axis.
  • the star-shaped cross section of the profiled locking pin engages positively in the locking hole in the longitudinal direction of the locking hole.
  • the locking pin is biased into its engagement position by an unprotected leaf spring, which is located on the outside of the joint opposite the locking pin.
  • the locking pin To adjust the mouth width of the known gripping pliers, the locking pin must be pressed against the force of the leaf spring into the pliers joint, so that its larger cross section is pressed out of the locking hole. Then the pliers bracket can be adjusted against the pliers handle to the desired extent. As soon as the locking pin is released, the leaf spring presses it into the engagement position with the locking hole and the intended jaw width of the gripping pliers is fixed.
  • the locking pin has a first area of smaller diameter and a second area of larger diameter
  • the tong clip has an elongated locking hole in which the locking pin with its first area is rotatably immovable and with its second area slidably engages in the longitudinal direction.
  • a structure according to claim 1 ensures a particularly simple and therefore reliable construction.
  • Springs such as a coil spring, a plate spring or an elastomer spring are possible for preloading and offer their specific advantages.
  • Another embodiment of the present invention can also provide that a snap spring is assigned to the locking pin, which serves to pretension the locking pin and closes the space to the outside. With this arrangement, the sealing of the adjusting device is achieved to the outside, while the snap spring resilient over a dead center simultaneously takes over the pretensioning of the locking pin. This arrangement saves another component compared to the preloading by means of a spring, since the snap spring takes over the function of the spring and the cover plate in one piece.
  • FIG. 1 shows a gripping pliers according to the invention as a so-called water pump pliers in a plan view.
  • the gripping pliers comprise a pliers handle 1 and a pliers bracket 2, each of which is provided with a grip section 3 or 4.
  • the pliers handle 1 and the pliers bracket 2 intersect in a joint 5, which comprises a locking pin 6 and an elongated locking hole 7.
  • the pliers handle 1 and the pliers bracket 2 each have a gripping jaw 9 or 10, which together form a pliers mouth.
  • the pliers handle 1 is provided in the region of the joint 5 with a slot running parallel to the plane of the drawing in the illustration according to FIG. 1, through which the pliers bracket 2 is inserted, so that the pliers handle 1 engages around the pliers bracket 2 in the region of the joint 5 on both sides.
  • FIG. 2 shows the gripping pliers according to FIG. 1 from the opposite side. The same components are provided with the same reference numbers.
  • Locking pin 6 covered by a cover plate 11.
  • the pliers joint 5 is shown in a cross section approximately along the line III-III of Figure 2.
  • the pliers handle 1 slotted in this area has a left area 1a and a right area 1b, which cannot be seen in FIG. 1 or FIG. 2.
  • the clamp bracket 2 is inserted between the left side 1a and the right side 1b of the clamp handle 1.
  • the locking hole 7 is, as shown in Figures 1 and 2, elongated from a series of several cylindrical bores, which partially overlap. The centers of the bores are offset from one another by less than one bore diameter, so that there is a free passage between the respective bores, but the width is limited.
  • the locking pin 6 is designed as a one-piece, rotationally symmetrical rotating part and has an outer, dome-shaped pressure region 15 which points outwards from the pliers joint 5. From the pressure area 15, a cylindrical section of smaller diameter 16 passes through a bore 17 of corresponding diameter into the gripper part 1a. There increases the diameter 18, which is displaceably seated in the locking hole 7 and in a bore 19 of corresponding diameter in the pliers handle part 1b.
  • the locking pin 6 with its end face opposite the pressure region 15 is approximately flush with the outer surface that surrounds the bore 19.
  • a concentric blind hole 20 is introduced from the front side of larger diameter into the locking pin 6 and ends shortly before the pressure region 15.
  • the blind hole 20 is provided for receiving a coil spring 21, the total has approximately the length of the locking pin 6.
  • the helical spring 21 is laterally guided in the blind hole 20 in the installed position over approximately two thirds of its length, which results in great security against unintentional kinking of the helical spring 21.
  • the cover plate 11 acts as an abutment for the helical spring 21 opposite the locking pin 6.
  • FIG. 3 shows the pliers joint 5 and in particular the locking pin 6 in its engagement position, in which the region 18 of larger diameter engages in the cylindrical bores of the locking hole 7.
  • the joint 5 is immovable in the longitudinal direction of the locking hole 7, the locking pin 6 forming the bearing axis and pivot axis of the pliers joint 5.
  • the user of the gripping pliers can press on the pressure region 15 of the locking pin 6 and move it in the direction of the cover plate 11 against the force of the helical spring 21.
  • the pliers handle 1 can be moved relative to the pincer 2 because the area 16 of smaller diameter also fits through the narrowed areas of the locking hole 7.
  • the locking pin 6 can be released and is pushed back into the locking or engagement position by the coil spring 21. This position is assumed as soon as a bore area of the locking hole 7 comes to coincide with the area 18 of larger diameter, the engagement being facilitated by a chamfer provided between the areas 16 and 18.
  • this gripper consists of only five components.

Claims (5)

  1. Pince de préhension avec une branche de pince droite (1) et une branche de pince coudée (2) avec une ouverture crantée (7), présentant chacune une partie de branche (3, 4) et un mors (9,10) situé à l'opposé de la partie de branche (3, 4), et sur laquelle
    a) la branche de pince droite (1) et la branche de pince coudée (2) sont logées l'une en face de l'autre dans une articulation (5) de manière à pouvoir pivoter autour d'un axe de pivotement, et l'articulation (5) présente une position en prise et une position de réglage,
    b) la branche de pince droite (1) est pourvue au niveau de l'articulation (5) d'une fente à travers laquelle est enfilée la branche coudée (2), de telle sorte que la branche droite (1) enveloppe des deux côtés la branche coudée (2) au niveau de l'articulation (5),
    c) il est prévu un élément de réglage (6) comprenant une goupille d'arrêt, pour le réglage de la position d'enclenchement et de la position de réglage, élément pouvant être déplacé à la main contre un ressort (21) en direction de l'axe de pivotement, la goupille d'arrêt (6) en position de prise formant l'axe d'appui de l'articulation (5),
    d) la branche de pince droite (1) et la branche de pince coudée (2) délimitent au niveau de l'articulation (5) un espace dans lequel la goupille d'arrêt (6) peut être enfoncée inversement à la précontrainte du ressort (21) et
    e) le ressort (21) de l'axe de pivotement est situé dans le voisinage de l'axe de pivotement ou bien de manière coaxiale à celui-ci,
    caractérisée en ce que
    f) la goupille d'arrêt (6) présente une première partie (16) de petit diamètre qui entre par un alésage (17) de diamètre correspondant dans la première partie de la branche de pince droite (1a), et une deuxième partie (18) de diamètre plus important logée de manière à pouvoir être déplacée dans l'ouverture crantée (7) ainsi que dans un alésage (19) de diamètre correspondant dans la deuxième partie de la branche de pince droite (1b) et en ce que
    g) un couvercle (11) fermant l'espace de sorte à former une protection contre la crasse, la détérioration et la perte du ressort (21) agit pour le ressort (21) comme contre-appui opposé à la goupille d'arrêt (6).
  2. Pince de préhension selon la revendication 1,
    caractérisée en ce que pour l'essentiel il y a symétrie de révolution de la goupille d'arrêt (6).
  3. Pince de préhension selon l'une des revendications ci-dessus,
    caractérisée en ce que la goupille d'arrêt (6) peut être poussée longitudinalement avec sa première partie (16) et qu'avec sa deuxième partie (18) elle s'engage dans l'ouverture crantée en pouvant pivoter, sans pouvoir être décalée.
  4. Pince de préhension selon l'une des revendications ci-dessus,
    caractérisée en ce qu'il est prévu comme ressort (21) un ressort cylindrique s'engageant au moins en partie dans un alésage (20) de la goupille d'arrêt (6), alésage parallèle à l'axe et pratiqué dans la goupille d'arrêt sur le côté frontal de diamètre plus important (18).
  5. Pince de préhension avec une branche de pince droite (1) et une branche de pince coudée (2) avec une ouverture crantée (7), présentant chacune une partie de branche (3,4) et un mors (9,10) situé à l'opposé de la partie de branche (3, 4), et sur laquelle
    a) la branche de pince droite (1) et la branche de pince coudée (2) sont logées l'une en face de l'autre dans une articulation (5) de manière à pouvoir pivoter autour d'un axe de pivotement, et l'articulation (5) présente une position en prise et une position de réglage,
    b) la branche de pince droite (1) est pourvue au niveau de l'articulation (5) d'une fente à travers laquelle est enfilée la branche coudée (2), de telle sorte que la branche droite (1) enveloppe des deux côtés la branche coudée (2) au niveau de l'articulation (5),
    c) il est prévu en plus un élément de réglage (6) comprenant une goupille d'arrêt, pour le réglage de la position d'enclenchement et de la position de réglage, élément pouvant être déplacé à la main contre un ressort (21) en direction de l'axe de pivotement, la goupille d'arrêt (6) en position de prise formant l'axe d'appui de l'articulation (5),
    d) le ressort (21) de l'axe de pivotement est situé dans le voisinage de l'axe de pivotement ou bien de manière coaxiale à celui-ci,
    e) la branche de pince droite (1) et la branche de pince coudée (2) délimitent au niveau de l'articulation (5) un espace dans lequel la goupille d'arrêt (6) peut être enfoncée inversement à la précontrainte du ressort (21)
    caractérisée en ce que
    f) la goupille d'arrêt (6) présente une première partie (16) de petit diamètre qui entre par un alésage (17) de diamètre correspondant dans la première partie de la branche de pince droite (1a), et une deuxième partie (18) de diamètre plus important logée de manière à pouvoir être déplacée dans l'ouverture crantée (7) ainsi que dans un alésage (19) de diamètre correspondant dans la deuxième partie de la branche de pince droite (1b) et en ce que
    g) le ressort est un ressort à déclic qui fait ressort au delà d'un point mort et sert à la précontrainte de la goupille d'arrêt (6) et qui bouche l'espace par rapport à l'extérieur.
EP97110983A 1996-08-23 1997-07-02 Pince à ouverture variable Expired - Lifetime EP0824996B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19634082A DE19634082A1 (de) 1996-08-23 1996-08-23 Greifzange mit verstellbarer Maulweite
DE19634082 1996-08-23

Publications (2)

Publication Number Publication Date
EP0824996A1 EP0824996A1 (fr) 1998-02-25
EP0824996B1 true EP0824996B1 (fr) 2001-09-19

Family

ID=7803488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110983A Expired - Lifetime EP0824996B1 (fr) 1996-08-23 1997-07-02 Pince à ouverture variable

Country Status (3)

Country Link
EP (1) EP0824996B1 (fr)
AT (1) ATE205765T1 (fr)
DE (3) DE19634082A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19741796A1 (de) * 1997-09-22 1999-03-25 Ver Beckersche Werkzeugfab Durchgesteckte Greifzange mit verstellbarer Maulweite
FR2786119B1 (fr) * 1998-11-19 2001-02-09 Bost Garnache Ind Pince a au moins deux positions de reglage
DE19909224B4 (de) * 1999-03-03 2012-11-08 NWS Germany Produktion W. Nöthen e.K. Montagezange mit verstellbarer Maulweite
DE10031343A1 (de) * 2000-07-03 2002-01-17 Wille Gmbh & Co Greifzange mit verstellbarer Maulweite
DE20012818U1 (de) * 2000-07-25 2001-03-01 Wille Gmbh & Co Greifzange mit verstellbarer Maulweite
DE102004022943B4 (de) * 2004-05-11 2014-08-28 Knipex-Werk C. Gustav Putsch Kg Verstellzange
DE102005035846A1 (de) * 2005-07-30 2007-02-08 GM Global Technology Operations, Inc., Detroit Andruckvorrichtung für ein Spannsystem
DE102006010285A1 (de) 2006-03-02 2007-09-06 Eduard Wille Gmbh & Co. Kg Zange mit geschützter Zwangsführung
US8393083B2 (en) * 2010-04-08 2013-03-12 Pei-Ling Wu Adjustable thinning scissors

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB103226A (en) * 1916-04-13 1917-01-18 John Henry Pickard Improvements in Adjustable Wrenches.
DE805265C (de) * 1948-11-04 1951-05-10 Walter Gott Gesenkschmiede Und Zange
US4296655A (en) * 1980-05-12 1981-10-27 Joseph Tesoro Slip joint pliers
GB8506017D0 (en) * 1985-03-08 1985-04-11 Stafford M A Adjustable wrench
US4773288A (en) * 1987-06-08 1988-09-27 Jang Young H Adjustable vise grip
DE9218069U1 (fr) * 1991-08-08 1993-07-29 Knipex-Werk C. Gustav Putsch, 5600 Wuppertal, De

Also Published As

Publication number Publication date
DE29620588U1 (de) 1997-04-03
DE19634082A1 (de) 1998-02-26
ATE205765T1 (de) 2001-10-15
EP0824996A1 (fr) 1998-02-25
DE59704644D1 (de) 2001-10-25

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