EP0309880B1 - Outil à main - Google Patents

Outil à main Download PDF

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Publication number
EP0309880B1
EP0309880B1 EP19880115440 EP88115440A EP0309880B1 EP 0309880 B1 EP0309880 B1 EP 0309880B1 EP 19880115440 EP19880115440 EP 19880115440 EP 88115440 A EP88115440 A EP 88115440A EP 0309880 B1 EP0309880 B1 EP 0309880B1
Authority
EP
European Patent Office
Prior art keywords
toothing
handle
slide
tool head
axis
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
EP19880115440
Other languages
German (de)
English (en)
Other versions
EP0309880A2 (fr
EP0309880A3 (en
Inventor
Udo Fierus
Gerd Fierus
Hermann J. Zerver
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.)
Hazet Werk Hermann Zerver GmbH and Co KG
Original Assignee
Hazet Werk Hermann Zerver GmbH and Co KG
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 Hazet Werk Hermann Zerver GmbH and Co KG filed Critical Hazet Werk Hermann Zerver GmbH and Co KG
Publication of EP0309880A2 publication Critical patent/EP0309880A2/fr
Publication of EP0309880A3 publication Critical patent/EP0309880A3/de
Application granted granted Critical
Publication of EP0309880B1 publication Critical patent/EP0309880B1/fr
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
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/06—Handle constructions reversible or adjustable for position
    • B25G1/063—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/38—Hinged, pivoted, swivelling, or folding joints

Definitions

  • the invention relates to a hand tool with a tool head, for example in the form of a square drive, a spanner or spanner, a switchable ratchet or the like, and with a handle on which the tool head is pivotally mounted about an axis extending transversely to the longitudinal axis of the handle and in one of Several angular positions can be positively determined, for which purpose the tool head is provided at its handle-side end surrounding the pivot axis with a toothing which is formed on a surface which is aligned concentrically with the pivot axis and forms part of a circular cylinder and into which the respective angular position of the tool head is opposite Grip locking piece engages positively, which is designed as a slide and is provided with a counter-toothing engaging in the toothing of the tool head.
  • Hand tools of this type are known in particular as reversible ratchets, but also as articulated handles, in which the tool head carrying the actual tool, for example a socket wrench, is pivotably mounted on the handle, so that the respective tool can be used in the respectively required angular position with respect to the handle longitudinal axis.
  • the tool head carrying the actual tool for example a socket wrench
  • the handle pivotably mounted on the handle, so that the respective tool can be used in the respectively required angular position with respect to the handle longitudinal axis.
  • a hand tool of the type described in the opening paragraph in which the slide is guided displaceably in the longitudinal direction of the handle.
  • the slide is provided with a tooth which engages in the toothing of the tool head and is displaced by a cam, which is rotatably mounted in the handle and in one position presses the tooth of the slide into a tooth gap of the toothing on the tool head, while in the 180 ° twisted position of the tooth is withdrawn from the tooth gap due to the action of a spring, so that the tool head can be pivoted.
  • This known construction has a complex and susceptible to failure.
  • a hand tool of the type described in the opening paragraph is also known from US Pat. No. 1,942,640, in which the slide can be displaced essentially in the longitudinal direction of the handle.
  • the slide is pulled back by hand against the force of a spring in order to release the tooth engagement between the slide and the tool head; the renewed tooth engagement is produced essentially by spring force, so that at high loads it cannot be ruled out that the spring force can be overcome, the slide pushed back and the locking of the tool head released.
  • the invention is based on the object of developing a hand tool of the type presumed to be known in such a way that, with a structurally simple structure, the tool head is fixed reliably and also transmits high forces.
  • the solution to this problem by the invention is characterized in that the slide along an oblique to the pivot axis sliding axis between two end positions is displaceable, in one of which the counter-toothing engages in the toothing and in the other of which the counter-toothing is located at a distance from the toothing due to the inclined position of the sliding axis, which prevents engagement of the two toothings.
  • the tool head is positively fixed to the handle in each of the selected positions by means of the slider, since the slider, which is displaceable on the oblique sliding axis, engages with its toothing over a large area in the toothing of the tool head in one end position and is in turn positively mounted on the handle. High forces can thus also be transmitted without the risk that the tooth engagement is canceled. If, on the other hand, the slide is moved into the other end position, in which its toothing is withdrawn from the counter toothing of the tool head due to the inclined position of the sliding axis, the tool head can be pivoted in a simple manner.
  • the form-fitting fixing of the tool head on the handle is thus canceled after a lateral displacement of the locking piece designed as a slide, so that the tool head can then be moved by hand into the desired angular position relative to the handle, in which it can be moved by pushing back the slide-like Blocking piece is secured again by shape intervention.
  • the sliding axis can be formed by a bearing pin arranged obliquely to the pivot axis in the handle, on which the slide is slidably mounted.
  • the bearing pin can be arranged in the bifurcated end of the handle and the part of the slide provided with the counter-serration can be approximately half as wide as the serration on the tool head which is also in the bifurcation, so that in one End position, in which the slide rests on the left part of the fork, for example, there is a tooth engagement between the toothing and counter-toothing and in the other end position, in which the slide rests on the right part of the fork, the tooth engagement is canceled and the tool head is pivoted relative to the handle can.
  • this latching element can be designed as a spring-loaded ball, which is arranged in a bore in the handle and engages on the side of the slide opposite the counter-toothing.
  • this hand tool comprises a tool head 1 and a handle 2.
  • the tool head 1 is designed as a reversible ratchet
  • the tool head 1 of the first exemplary embodiment according to FIGS. 1 to 6 is designed as a square drive
  • the second exemplary embodiment according to FIGS. 7 and 8 as a ring spanner.
  • the tool head 1 is pivotally mounted on the handle 2 about a pivot axis A, which extends transversely to the longitudinal axis of the handle.
  • this pivot axis A is formed in each case by a screw bolt 3 which is screwed into a fork-shaped end of the handle 2 and here engages in the handle-side end of the tool head 1 which projects into the forked opening of the handle 2.
  • the tool head 1 is provided on its handle-side end surrounding the pivot axis A with a toothing 4 which is formed on a surface which is concentrically aligned with the pivot axis A and forms part of a circular cylinder, as shown in particular in FIGS. 2, 4, 6, 8 and 10 emerges.
  • a locking piece engages in this toothing 4 in a form-fitting manner and, by its engagement, fixes the tool head 1 in the respective angular position relative to the handle 2.
  • the locking piece is designed as a slide 6, which is provided with counter-toothing 6a, which corresponds to the toothing 4 of the tool head 1.
  • the slide 6 is displaceable along a sliding axis S which lies in the same longitudinal center plane of the handle 2 as the pivot axis A, but extends obliquely with respect to the pivot axis A.
  • this sliding axis S is formed by a bearing pin 7 which extends between the two arms of the fork-shaped end of the handle 2, as can best be seen in FIGS. 3 and 5.
  • the slide 6 provided with the counter-toothing 6a can be displaced between two end positions, which are shown in FIG. 3 or in FIG.
  • the counter toothing 6a of the slide 6 engages in the end position shown in FIG. 3 in the toothing 4 of the tool head 1 and thus secures the tool head 1 against pivoting about the pivot axis A
  • the counter toothing 6a of the slide 6 is in the other end position according to FIG. 5 out of engagement with the toothing 4, so that in this case the tool head 1 can be pivoted about the pivot axis A by hand.
  • the inclined position of the bearing pin 7 is chosen such that the slide between the left end position in FIG. 3 and the right end position in FIG. 5 is removed by at least the amount relative to the toothing 4 that corresponds to the depth of the toothing 4 and 6a.
  • FIGS. 1 and 2 and 7 to 11 show furthermore, that the slider 6 is provided with gripping surfaces 6b both on the front and on the back, which facilitate displacement of the slider 6.
  • Figures 2, 8 and 10 show that the slide 6 is secured in the locked position by a non-positively engaging locking member, which in the exemplary embodiments is designed as a ball 8 loaded by a spring 8a, which is arranged in a bore in the handle 2 are. The ball 8 engages on the side of the slide 6 opposite the counter-toothing 6a.
  • the locking piece designed as a slider 6 can be actuated by the fingers of the hand that holds the tool, so that here, too, a one-handed release of the locking device, pivoting of the tool head 1 relative to the handle and subsequent attachment of the locking device is possible .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Claims (5)

  1. Outil à main avec une tête d'outil (1), par exemple sous la forme d'un carré d'entraînement, d'une clé polygonale ou à fourche, d'un cliquet réversible ou autres éléments semblables, ainsi qu'avec un manche (2) sur lequel est montée la tête d'outil (1) de manière à pivoter autour d'un axe (A) qui s'étend perpendiculairement à l'axe longitudinal du manche, la tête (1) pouvant être bloquée à engagement positif dans l'une de plusieurs positions angulaires et étant munie à cet effet, à son extrémité côté manche et entourant l'axe de pivotement (A), d'une denture (4), qui est formée sur une surface centrée de manière concentrique par rapport à l'axe de pivotement (A) et constituant une partie d'une surface cylindrique circulaire, et dans laquelle denture pénètre à engagement positif une pièce de verrouillage déterminant chaque position angulaire de la tête d'outil (1) par rapport au manche (2), cette pièce étant conçue sous forme de verrou (6) et étant munie d'une contredenture (6a) qui vient en prise avec la denture (4) de la tête d'outil,
       caractérisé en ce que le verrou (6) est mobile le long d'un axe coulissant (S), qui s'étend obliquement par rapport à l'axe de pivotement (A) entre deux positions finales, dans l'une desquelles la contre-denture (6a) pénètre dans la denture (4) et dans l'autre desquelles la contre-denture (6a) se trouve, du fait de la position oblique de l'axe coulissant (S) à une distance de la denture (4) qui exclut la venue en prise des deux dentures (4, 6a).
  2. Outil à main selon la revendication 1, caractérisé en ce que l'axe coulissant (S) est constitué par une tige support (7) située obliquement par rapport à l'axe de pivotement (A) dans le manche (2) et sur laquelle le verrou (6) est monté mobile.
  3. Outil à main selon les revendications 1 et 2, caractérisé en ce que la tige support (7) est placée dans l'extrémité fourchue du manche (2) et en ce que la partie du verrou (6) munie de la contre-denture (6a) est conçue approximativement de moitié moins large que la denture (4) située également dans la fourche sur la tête d'outil (1).
  4. Outil à main selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le verrou (6) est assuré en position de verrouillage par un élément d'arrêt (8) qui agit sur lui par l'influence de la force.
  5. Outil à main selon la revendication 4, caractérisé en ce que l'élément d'arrêt est conçu comme une bille (8) commandée par ressort, qui est située dans un alésage du manche (2) et qui vient en contact avec le côté du verrou (6) opposé à la contre-denture (6a).
EP19880115440 1987-09-29 1988-09-21 Outil à main Expired - Lifetime EP0309880B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873732695 DE3732695C1 (de) 1987-09-29 1987-09-29 Handwerkzeug
DE3732695 1987-09-29

Publications (3)

Publication Number Publication Date
EP0309880A2 EP0309880A2 (fr) 1989-04-05
EP0309880A3 EP0309880A3 (en) 1990-07-04
EP0309880B1 true EP0309880B1 (fr) 1992-11-11

Family

ID=6337082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880115440 Expired - Lifetime EP0309880B1 (fr) 1987-09-29 1988-09-21 Outil à main

Country Status (3)

Country Link
EP (1) EP0309880B1 (fr)
DE (1) DE3732695C1 (fr)
ES (1) ES2036646T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926916A1 (de) * 1989-08-16 1991-02-21 Wuerth Adolf Gmbh & Co Kg Antriebswerkzeug fuer steckschluesseleinsaetze
AUPO189196A0 (en) * 1996-08-26 1996-09-19 Weitacher, Thomas Martin Tool holder
TW380468U (en) * 1998-03-10 2000-01-21 Jiang De Ching Hand tool whose head and handle can be bent & positioned
US6405621B1 (en) * 1998-03-13 2002-06-18 Snap-On Tools Company Ratchet wrench with multi-position ratchet head
TWI262118B (en) 2003-01-28 2006-09-21 Hou-Fei Hu Structure improvement of head-rotatable wrench
DE202007002533U1 (de) * 2007-02-19 2007-04-26 Eduard Wille Gmbh & Co. Kg Schraubenschlüssel mit arretierbarem Gelenk
CN116615309A (zh) 2020-12-28 2023-08-18 米沃奇电动工具公司 具有枢转部分和锁定机构的工具
USD1002309S1 (en) 2020-12-30 2023-10-24 Milwaukee Electric Tool Corporation Wrench

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE485883C (de) * 1929-11-09 Friedr Buerki Schraubenschluessel
US1942640A (en) * 1933-03-09 1934-01-09 Frank W Fromme Wrench
US2341564A (en) * 1941-12-09 1944-02-15 Pierre William G La Wrench
FR1110021A (fr) * 1954-08-23 1956-02-06 Perfectionnement aux clés de serrage
US3383962A (en) * 1966-06-27 1968-05-21 New Britain Machine Co Ratchet-wrench construction
US3779107A (en) * 1972-10-19 1973-12-18 T Avery Ratchet wrench tool head positioner
DE3006651A1 (de) * 1980-02-22 1981-08-27 Hans 5630 Remscheid Mesenhöller Knarre mit am griffstiel angelenktem arbeitskopf
DE3023882A1 (de) * 1980-06-26 1982-01-14 Hazet-Werk Hermann Zerver Gmbh & Co Kg, 5630 Remscheid Vorrichtung zur betaetigung von handwerkzeugen
US4463632A (en) * 1982-09-29 1984-08-07 Parke W Rod Tool having locking device for rotatable head
US4530262A (en) * 1983-05-31 1985-07-23 Pownall Larry D Releasably lockable articulated handle
FR2559701A1 (fr) * 1984-02-20 1985-08-23 Nakayama Eiji Cle a rochet
DE3518661C2 (de) * 1985-05-24 1994-04-28 Hans Mesenhoeller Schraubenschlüssel

Also Published As

Publication number Publication date
EP0309880A2 (fr) 1989-04-05
ES2036646T3 (es) 1993-06-01
EP0309880A3 (en) 1990-07-04
DE3732695C1 (de) 1989-03-02

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