EP0413218B1 - Antriebswerkzeug für Steckschlüsseleinsätze - Google Patents

Antriebswerkzeug für Steckschlüsseleinsätze Download PDF

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Publication number
EP0413218B1
EP0413218B1 EP90114939A EP90114939A EP0413218B1 EP 0413218 B1 EP0413218 B1 EP 0413218B1 EP 90114939 A EP90114939 A EP 90114939A EP 90114939 A EP90114939 A EP 90114939A EP 0413218 B1 EP0413218 B1 EP 0413218B1
Authority
EP
European Patent Office
Prior art keywords
tool
handle
freewheel
plate
tool head
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
EP90114939A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0413218A1 (de
Inventor
Karl Weidner
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.)
Adolf Wuerth GmbH and Co KG
Original Assignee
Adolf Wuerth 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 Adolf Wuerth GmbH and Co KG filed Critical Adolf Wuerth GmbH and Co KG
Publication of EP0413218A1 publication Critical patent/EP0413218A1/de
Application granted granted Critical
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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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners

Definitions

  • the invention relates to a drive tool for socket wrench inserts or the like. according to the first part of claim 1.
  • ratchets or switch ratchets. They serve, for example, to drive socket wrench inserts. Socket wrench inserts of different types and sizes can be connected to the drive tool, for example using a square socket. The tool can then be used to turn screws in both directions.
  • a free-running wrench of this type is already known (DE-A-16 28 033), which is not designed as a drive tool for a socket wrench insert, but as a ring wrench itself. It contains a non-switchable freewheel.
  • a drive tool for socket wrench inserts (US-A-44 06 186) which has a switching device for the freewheel.
  • the switching element With the help of the switching element, the freewheel can be completely blocked or released in one of the two directions of rotation.
  • a plate-like element is used for switching, which can be rotated to a limited extent in both directions from a central position.
  • the invention has for its object to provide a drive tool for socket wrench inserts that is designed so that it can be better and easier to use and so the work results are improved.
  • the invention proposes a drive tool with the features of claim 1.
  • the user can rest on the plate with one hand, which due to its free rotatability relative to the tool then stops during the rotation of the tool. In this way, the user can apply a force transversely to the longitudinal direction of the tool.
  • the drive tool has a freewheel in its tool head, in particular a switchable freewheel.
  • the tool can be swiveled back and forth in one direction without having to be screwed.
  • the tool head In order to be able to use drive tools of the type mentioned, even in confined spaces, it is customary for the tool head to be of flat-cylindrical design, the connecting element being arranged on an end face of the flat cylinder.
  • an element that is as flat as possible is generally provided as the actuating element for the switching device of the freewheel on the side of the tool head opposite the connecting element.
  • a flat disk is known, the diameter of which is somewhat smaller than the diameter of the tool head, and which can be rotated around the axis of the connecting element by an angle of approximately 90 °. You can touch the very narrow surface, which is provided with corrugations.
  • this plate Due to the very narrow area, this plate can be rotated only very poorly, in particular if one takes into account that the user may have damp or oil-smeared hands.
  • the invention proposes, in order to simplify the changeover, to give this plate the shape of a flat truncated cone with a knurled conical surface. In this way, the surface area on which the user can attack is increased without having to increase the overall height.
  • flanks of the rotary plate are inclined by approximately 45 °.
  • the invention proposes to arrange or design the pressure plate so that it leaves the flanks of the switching rotary plate free so that access to these flanks is unimpeded.
  • the drive tool for socket wrench inserts shown in FIG. 1, also called ratchet or ratchet in technical terms, contains a tool head 11 with a laterally projecting connecting element 12 arranged thereon in the form of a square of standardized size, onto which a socket wrench insert, an extension or a cardan joint is attached can be.
  • a handle 13 which extends approximately perpendicular to the axis of the connecting element 12, is preferably connected in one piece to the tool head 11.
  • a handle is attached to the stem, which for example consists of plastic and is produced by spraying or in some other way and is attached to the stem 13.
  • the stem which for example consists of plastic and is produced by spraying or in some other way and is attached to the stem 13.
  • the handle is designed to be rotationally symmetrical and has the shape of two inverted truncated cones which are connected to one another at their bases. This point thus forms the point 15 of the largest diameter.
  • the point 15 of largest diameter is arranged offset from the center of the length of the handle 14 towards the free end 16 of the handle and is at a distance from the free end 16 of the handle 14 which is approximately half the distance of the point 15 largest Diameter from the opposite handle end 17 of the handle. In other words, the location 15 of the largest diameter divides the length of the handle in a ratio of 1: 2. Because of this shape, the handle is particularly convenient in the hand, which has its largest inner width at this point.
  • the connecting element is attached to the tool head 11 with the aid of a freewheel.
  • the connecting element 12 When the tool rotates around the axis of the connecting element 12 in one direction, the connecting element 12 is therefore taken along, while in the opposite direction, provided there is a certain amount of counter friction, it is not taken along.
  • the handle shape as shown in FIG. 1 and later also in FIG. 2, is also useful for tools that do not have a free-wheel.
  • the tool shown in Fig. 1 has a freewheel, the direction of which can be switched.
  • a switchover plate 18 is provided for switching the freewheel, which is arranged on the side of the tool head 11 facing away from the connecting element 12.
  • the tool head 11 itself is designed approximately as a flat cylinder, its lateral surface being slightly spherical.
  • the flat cylindrical shape is very useful for reasons of space.
  • the switching plate 18 should take up as little space as possible, and is therefore relatively flat.
  • the switchover plate is designed in the form of a flat truncated cone, the conical surface or flank 19 extending approximately at an angle of 45 ° relative to the cone axis and knurled or otherwise provided with a roughening.
  • the user engages on the flank 19 of the switching plate 18 and rotates it by a limited angle around the axis of the connecting element 12.
  • the oblique flank 19 increases the area on which the user can engage.
  • a further centrally arranged plate 20 is mounted on the tool head 11 and can be freely rotated relative to the tool head 11 about the axis of the connecting element 12.
  • the pressure plate 20 has a diameter which corresponds to the smaller diameter of the truncated cone of the switching plate 18. As a result, the edge 19 of the switching plate 18 remains accessible.
  • the user presses on the pressure plate 20, which then rotates with respect to the pivoted tool head 11 due to its free rotatability, but remains stationary with respect to the hand of the user. By pressing this plate 20, the friction is increased so that the freewheel is triggered even with smooth-running screws.
  • This type of improvement in the use of the tool is particularly useful in the case of changeover plates, since there is a risk of switching over the freewheel in the case of changeover plates without a rotatable pressure plate.
  • FIG. 2 shows a view of a modified embodiment of a handle 21 approximately on the actual scale. While in the embodiment of FIG. 1 the handle has the shape of two truncated cones, the shape of the handle 21 in the embodiment according to FIG. 2 is changed in that the handle 21 has a constriction 22 in the direction of its handle-side end 17. This constriction or circumferential trough is arranged approximately in the front quarter of the handle 21. It is used to insert the thumb and / or index finger.
  • the handle 21 differs from the handle 14 in that its cross-section is not round, but octagonal with rounded edges.
  • This form of handle is always recommended if the tool is also to be used for management work, whatever that It can be the case if a universal joint or only an extension is arranged between the tool head and the socket wrench.
  • the shape of the handle 21 which differs from the circular cross-sectional shape makes it easier to control the orientation of the tool.
  • FIG. 3 shows, partially in section, an embodiment of the tool head 11 that has been modified compared to FIG. 1.
  • the switchover plate 18, which is shown in section, has a central recess 23 opening on its outside, in which the pressure plate 24 is recessed.
  • the pressure plate protrudes only slightly or not at all over the upper side of the switching plate 18, so that the overall height of the tool head of the embodiment according to FIG. 3 is not increased by the additional pressure plate 24.
  • the edge 19 of the switching plate 18 remains completely free.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Processing Of Terminals (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
EP90114939A 1989-08-16 1990-08-03 Antriebswerkzeug für Steckschlüsseleinsätze Expired - Lifetime EP0413218B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926916 1989-08-16
DE3926916A DE3926916A1 (de) 1989-08-16 1989-08-16 Antriebswerkzeug fuer steckschluesseleinsaetze

Publications (2)

Publication Number Publication Date
EP0413218A1 EP0413218A1 (de) 1991-02-20
EP0413218B1 true EP0413218B1 (de) 1994-07-06

Family

ID=6387156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114939A Expired - Lifetime EP0413218B1 (de) 1989-08-16 1990-08-03 Antriebswerkzeug für Steckschlüsseleinsätze

Country Status (5)

Country Link
EP (1) EP0413218B1 (es)
AT (1) ATE108116T1 (es)
DE (2) DE3926916A1 (es)
DK (1) DK0413218T3 (es)
ES (1) ES2056317T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952902B1 (de) * 1997-01-17 2002-01-02 WILLI HAHN GmbH & CO. KG Drehwerkzeug-system

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1157427A (en) * 1915-07-29 1915-10-19 Michael Vern Seivert Wrench.
US2332972A (en) * 1941-12-15 1943-10-26 Helena E Johnson Wrench construction
US2707540A (en) * 1951-02-27 1955-05-03 Harry C Morris Friction clutch
DE1628033A1 (de) * 1966-10-10 1971-01-28 Werner Fa Hermann Freilaufschluessel
US3393587A (en) * 1966-12-15 1968-07-23 Wright Tool And Forge Company Ratchet wrenches
FR2170321A5 (es) * 1972-01-31 1973-09-14 Sicame Sa
DE2452302C3 (de) * 1974-11-05 1980-08-28 Fa. Gustav Weber, 5600 Wuppertal Griff für Handwerkzeuge, insbesondere für Schraubendreher
DE7702777U1 (de) * 1977-02-01 1978-07-27 Werkzeug-Union Gmbh -Dwu-, 5600 Wuppertal Knarre
DE2905163A1 (de) * 1979-02-10 1980-11-20 Holland Letz Felo Werkzeug Werkzeugheft
US4317392A (en) * 1981-03-30 1982-03-02 Perry M. Lane Ratchet wrench
DE8110659U1 (de) * 1981-04-08 1981-10-01 ELORA-Werkzeugfabrik GmbH, 5630 Remscheid "werkzeugheft"
US4406186A (en) * 1981-05-29 1983-09-27 Gummow Stephen A Dual action ratchet wrench
IT8122217V0 (it) * 1981-06-30 1981-06-30 Mig Moderna Ind Giraviti S P A Impugnatura per utensili girevoli, come per esempio cacciaviti e simili.
DE3372331D1 (en) * 1982-01-26 1987-08-13 Mesenhoeller Hans Ratchet
DE3625288A1 (de) * 1986-07-25 1988-02-04 Adolf Wuerth Gmbh & Co Kg Schraubenschluessel
DE8711798U1 (de) * 1987-09-01 1987-10-15 Bulin, Adolf, 8069 Rohrbach Ringgelenkknarre
DE3732695C1 (de) * 1987-09-29 1989-03-02 Hazet Werk Zerver Hermann Handwerkzeug

Also Published As

Publication number Publication date
DE3926916A1 (de) 1991-02-21
ATE108116T1 (de) 1994-07-15
DE59006348D1 (de) 1994-08-11
DK0413218T3 (da) 1994-11-07
ES2056317T3 (es) 1994-10-01
EP0413218A1 (de) 1991-02-20

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