EP0237626A1 - Clé à cliquet - Google Patents

Clé à cliquet Download PDF

Info

Publication number
EP0237626A1
EP0237626A1 EP86116045A EP86116045A EP0237626A1 EP 0237626 A1 EP0237626 A1 EP 0237626A1 EP 86116045 A EP86116045 A EP 86116045A EP 86116045 A EP86116045 A EP 86116045A EP 0237626 A1 EP0237626 A1 EP 0237626A1
Authority
EP
European Patent Office
Prior art keywords
pawls
head
ratchet wrench
chuck
spring
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.)
Granted
Application number
EP86116045A
Other languages
German (de)
English (en)
Other versions
EP0237626B1 (fr
Inventor
Kurt Grzanna
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.)
Cessione auto - K - Tool AG
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT86116045T priority Critical patent/ATE47683T1/de
Publication of EP0237626A1 publication Critical patent/EP0237626A1/fr
Application granted granted Critical
Publication of EP0237626B1 publication Critical patent/EP0237626B1/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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/06—Spanners; Wrenches with rigid jaws of socket type
    • 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
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/107—Spanners; Wrenches with adjustable jaws composed of a main body with exchangeable inserts
    • 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
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Definitions

  • the invention relates to a ratchet wrench of the type specified in the preamble of claim 1.
  • Such a ratchet wrench is known from DE-PS 3l 29 7l0. Keys of a similar type are also known from DE-PS 95l 708, DE-AS ll 50 930, US-PS 2 376 575, US-PS 2 760 394 or DE-GM 76 22 480.
  • Generic is a ratchet wrench that can be placed radially, which not only transmits large torques regardless of the toothing interrupted by the jaw opening, but can also cause the component to be screwed to rotate if the spatial conditions only allow the key arm to pivot by a few angular degrees, i.e. in cases where even a normal hexagon wrench can no longer be used.
  • the invention specified in the characterizing part of claim 1 is based on the object of improving a ratchet wrench of the type mentioned at the outset in such a way that it can be produced more efficiently on the one hand and is easier and safer to use on the other hand.
  • the key according to the invention is also particularly suitable for program-controlled and / or fully automatic production.
  • a jaw-shaped head part 1 is provided with an arm 11, which consists of two half-shells formed from metal or plastic, which are connected to one another in the region of recesses l2 forming fastening cams by means of a hollow rivet l3 .
  • a nut 2 is mounted, which has a mouth 2l and cylindrical lugs 22, which are mounted within the mouth of the two half-shells la and lb, which enclose a circular arc of more than 180 °, and are prevented from falling out by the teeth 23 forming an enlarged radius be secured in the axial direction.
  • the nut 2 is shown separately in Figure 3 for clarity.
  • the top and bottom (24) of the nut has a cord or other convenient design, which is suitable to transfer the nut manually to the starting position if necessary.
  • Two cylindrical lugs 32 form stub axles which rotatably support the pawls in corresponding circular recesses 14 in the two half-shells of the head part 1.
  • the pawls 3 are held in their locked position by means of spring elements 4l incorporated in a wall 4 forming part of a cylindrical tube.
  • the spring elements are produced by U-shaped punchings and angled slightly inwards or in some other way so that their free ends protrude into the interior.
  • the wall 4 forms on the one hand a stiffening element for the two half-shells in the area of the head, so that high actuation forces can be transmitted, and on the other hand is an essential mechanical functional element in cooperation with the pawls 3. Since the toothing 23 is self-locking, the pawls need only a relatively small force has to be exerted in order to move the small masses of the pawls and to overcome the frictional forces (which are also low due to the axle bearing).
  • FIG. 1 also shows that if there is only a small pivoting possibility for the arm 11, the selected latch arrangement does not allow a new engagement only after 30 or 40 °, but already after 10 °; when swiveling back counterclockwise, the pawl 3l4 does not snap into the adjacent tooth gap 40 ° away, but the pawl 3l6 into the gap between the teeth 2l8 and 2l9, up to where only a distance of l0 has to be covered. This effect plays a special role, especially when working in confined spaces.
  • the ratchet wrench according to the present invention also performs screwing work in cases when a conventional hexagon wrench can no longer grip, even if its jaw axis is inclined against that of the key arm.
  • the dense succession of possibilities of intervention is achieved in this embodiment in that the pitch of the teeth assigned to the nut (tooth gaps) is different from the pitch used for the arrangement of the pawls - a kind of nonien principle is used.
  • the (full) gear circle has twelve, the (uninterrupted) pawl arrangement has nine power transmission points.
  • w is the path of the handle in angular degrees
  • z1 the number of teeth
  • z2 the number of pawls
  • q forms the largest divisor common to the two numbers.
  • the divisor full number of teeth l2, full number of pawls 9
  • the task of the elastic organs according to FIGS. 1, 2 and 5 is not to hold the pawls 3 in the tooth gaps, but rather to hold the pawls 3 pushed aside by their teeth during the rotation of the nut to apply these so that they immediately snap into any gaps; this only requires a spring force of a few fractions of a Newton, based on the mass of the pawl and the friction of the bearing pins. Thus the spring action is low, that the rotation of the nut is hardly noticeably hindered.
  • the former is first disengaged from the nut by axial displacement, in order then to turn the nut so far that the entire key can now be removed. This is facilitated by the fact that the removal takes place over the thread and thus a component whose diameter is far below the jaw width.
  • the protruding teeth with the fingertip; if these are covered, the end faces 24 of the cylindrical nut extensions 22, for example roughened like a cord, are reached; the last ones can also be made a little longer and larger in diameter so that they have notches in the toothing, which also give sufficient grip to the pulling or pushing finger, which only has to exert a small force.
  • the external dimensions of the key head to the jaw width behave as 2.37 to 1 - the corresponding ratio of normal hexagon keys is 2.28 to 1 - so that the new tool is intended for convenient operation despite that Measures overall has a slim shape. It is also essential that - unlike conventional keys - only high-alloy steels have to be used for the light weight nut.
  • a sheet which is curved in two planes is used as the shell part for the head and handle part 1, the contour of which is cut after the bending work, as a result of which the final edge forms an edge;
  • the upper and lower shells are designed to match up to the holes.
  • the correspondence of the holes for the pawl suspension is ensured in that they are punched with the same tool on the one hand from the outside and on the other hand from the inside of the key head part.
  • a safety device in the form of a flattened tube 6 (according to FIG. 8). filled out.
  • the construction shown enables - according to the respective requirements - a number of advantageous variants.
  • the sheet metal strip 4 which holds the housing structure forms a bridging of the gap of the circular arc formed by the circumference of the key head towards the handle (FIG. 1). It is given a slightly larger radius of curvature so that it attaches to the outer wall with little pressure without rattling.
  • the spring structure according to FIG. 5 is preferably produced from band material (steel, bronze, plastic or the like) by means of a follow-on tool which successively exposes the tip ends, tilts them, exposes the remaining tongues and bends them out of the plane of the band; the tape ejected by the tool is then cut to the required length.
  • band material steel, bronze, plastic or the like
  • e.g. rustproof rod material is first produced, which is then held in machines, held by a special cartridge, with the lugs and brought to length.
  • High-strength parts made of plastic or ceramic can also be used in a favorable manner, which also applies in particular to the nut.
  • the embodiment of the invention is not limited to the preferred exemplary embodiment specified above. Rather, a number of variants are conceivable which make use of the solution shown, even in the case of fundamentally different types.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
EP86116045A 1986-03-15 1986-11-20 Clé à cliquet Expired EP0237626B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86116045T ATE47683T1 (de) 1986-03-15 1986-11-20 Ratschenschluessel.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3609118 1986-03-15
DE3609118 1986-03-15
DE19863610508 DE3610508A1 (de) 1986-03-15 1986-03-25 Ratschenschluessel
DE3610508 1986-03-25

Publications (2)

Publication Number Publication Date
EP0237626A1 true EP0237626A1 (fr) 1987-09-23
EP0237626B1 EP0237626B1 (fr) 1989-11-02

Family

ID=25842096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116045A Expired EP0237626B1 (fr) 1986-03-15 1986-11-20 Clé à cliquet

Country Status (9)

Country Link
US (1) US4926720A (fr)
EP (1) EP0237626B1 (fr)
KR (1) KR880701157A (fr)
AU (1) AU7089887A (fr)
CA (1) CA1300932C (fr)
DE (2) DE3610508A1 (fr)
FI (1) FI874995A0 (fr)
SU (1) SU1611210A3 (fr)
WO (1) WO1987005553A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0873822A3 (fr) * 1997-01-31 1999-08-04 Proma S.r.l. Levier à cliquet pour actionner un cric de véhicule
WO2001024973A1 (fr) * 1999-10-07 2001-04-12 Wolter, Peter Embout pour cle a cliquet

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002345A1 (fr) * 1987-09-15 1989-03-23 Wolter, Peter Cle a cliquet
DE3736109C1 (de) * 1987-10-26 1989-03-02 Richard Schumm Ratschenschluessel
DE8802219U1 (de) * 1987-12-08 1989-01-05 Wolter, Peter, Dipl.-Volksw., 7250 Leonberg Ratschenschlüssel
US5097730A (en) * 1988-11-07 1992-03-24 Bernard Oswald J Inline ratcheting tool
AU3591093A (en) * 1989-11-17 1993-09-01 Thomas L. Sheridan Continuously engaged tangential driving tool
US5456143A (en) * 1994-03-29 1995-10-10 Stanton; John L. Open end ratchet wrench
US5669272A (en) * 1996-02-22 1997-09-23 A&E Manufacturing Company Open end ratchet wrench
US5829327A (en) * 1996-10-10 1998-11-03 Stanton; John L. Open-end ratchet wrench
US6223630B1 (en) 1998-03-06 2001-05-01 John L. Stanton Open end ratchet wrench
US6499358B1 (en) * 1999-12-27 2002-12-31 Sherwood Services Ag Apparatus for applying a controlled amount of torque
US7024971B2 (en) * 2003-03-12 2006-04-11 Stanton John L Open end ratchet wrench
US7146880B1 (en) 2004-12-06 2006-12-12 Francis Services, Inc. Torque wrench system
US20060137492A1 (en) * 2004-12-24 2006-06-29 Richard Melos Reversible Ratcheting Open-End Wrench
US20100212461A1 (en) * 2009-02-24 2010-08-26 Burt William J Open end ratchet wrench
US8166849B2 (en) * 2009-12-16 2012-05-01 Shu-Su Chan Combination ratcheting wrench with a box-end wrench having an opening
US8342063B2 (en) * 2009-12-23 2013-01-01 Stanton John L Open-ended ratchet wrench
US20110167965A1 (en) * 2010-01-12 2011-07-14 Fielding Michael Non-slip and anti-burring gas cylinder spanner
US9302373B2 (en) 2012-04-02 2016-04-05 Deron Johnson Wrench with pivotable ratcheting open end wrench head
TWI453095B (zh) * 2012-06-14 2014-09-21 Kabo Tool Co 棘輪扳手
TW201416184A (zh) * 2012-10-26 2014-05-01 Matatakitoyo Tool Co Ltd 扭矩工具
US9393676B2 (en) * 2013-11-22 2016-07-19 Webermatic Tool Company, Llc Ratchet line wrench tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376575A (en) * 1942-10-24 1945-05-22 James E Cronan Ratchet wrench
US2760394A (en) * 1953-10-16 1956-08-28 Ledloy Ltd Torque multiplying bolt-holding type wrench
DE951708C (de) * 1953-04-08 1956-10-31 Eisenwerke Muelheim Meiderich Schraubwerkzeug mit einer in einem Ratschenkopf in einer Richtung drehbaren Schluesselnuss
DE1150930B (de) * 1955-08-04 1963-06-27 Friedrich Strauch Ratschenschraubenschluessel mit Freilaufkupplung
US3504579A (en) * 1967-11-02 1970-04-07 Dwayne L Harlan Open end ratchet wrench
DE3129710A1 (de) * 1981-07-22 1983-02-10 Kurt 1000 Berlin Grzanna "ratschenschluessel"
EP0099200A2 (fr) * 1982-06-29 1984-01-25 The Stanley Works Poignée à cliquet

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US302659A (en) * 1884-07-29 Ratchet-wrench
US763105A (en) * 1903-09-10 1904-06-21 Byron H Morrison Ratchet-wrench.
GB461510A (en) * 1935-08-22 1937-02-18 John Taft Improvements in or relating to ratchet spanners
US2205769A (en) * 1937-06-28 1940-06-25 Ernest J Sweetland Implement handle
US2456838A (en) * 1945-05-30 1948-12-21 Peterson Albert Pivoted pawl ratchet wrench with radially slotted head and socket
GB648163A (en) * 1948-12-08 1950-12-28 Agricola Reg Trust Improved wrench
DE835877C (de) * 1948-12-08 1952-04-07 Hacklaender & Co Ratschenschluessel
US3444767A (en) * 1967-01-16 1969-05-20 Melvin C Cupler Friction wrench
US3508456A (en) * 1968-10-29 1970-04-28 Charles E Schultz Adjustable wrench
US3572188A (en) * 1969-05-21 1971-03-23 William S Christian Jr High speed ratchet wrench
CA1052141A (fr) * 1976-08-25 1979-04-10 Roger Houle Cle a rochet a machoire ouverte
FR2408431A2 (fr) * 1977-10-19 1979-06-08 Stephanoises Forges Mecanisme d'entrainement reversible pour cle a cliquet
US4327610A (en) * 1980-06-02 1982-05-04 Angelo Chiarenza Open end ratchet wrench
DE3106510A1 (de) * 1981-02-21 1982-09-09 Arnold Klöckner Mechanischer backenschluessel
DE3215785A1 (de) * 1982-04-28 1983-11-03 Ludwig 8702 Güntersleben Schmitt Ratschenschraubschluessel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376575A (en) * 1942-10-24 1945-05-22 James E Cronan Ratchet wrench
DE951708C (de) * 1953-04-08 1956-10-31 Eisenwerke Muelheim Meiderich Schraubwerkzeug mit einer in einem Ratschenkopf in einer Richtung drehbaren Schluesselnuss
US2760394A (en) * 1953-10-16 1956-08-28 Ledloy Ltd Torque multiplying bolt-holding type wrench
DE1150930B (de) * 1955-08-04 1963-06-27 Friedrich Strauch Ratschenschraubenschluessel mit Freilaufkupplung
US3504579A (en) * 1967-11-02 1970-04-07 Dwayne L Harlan Open end ratchet wrench
DE3129710A1 (de) * 1981-07-22 1983-02-10 Kurt 1000 Berlin Grzanna "ratschenschluessel"
EP0099200A2 (fr) * 1982-06-29 1984-01-25 The Stanley Works Poignée à cliquet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0873822A3 (fr) * 1997-01-31 1999-08-04 Proma S.r.l. Levier à cliquet pour actionner un cric de véhicule
WO2001024973A1 (fr) * 1999-10-07 2001-04-12 Wolter, Peter Embout pour cle a cliquet
DE19948412C1 (de) * 1999-10-07 2001-05-23 Wolter Peter Einsatz für Ratschenschlüssel

Also Published As

Publication number Publication date
FI874995A (fi) 1987-11-12
DE3666676D1 (en) 1989-12-07
US4926720A (en) 1990-05-22
WO1987005553A1 (fr) 1987-09-24
SU1611210A3 (ru) 1990-11-30
KR880701157A (ko) 1988-07-25
FI874995A0 (fi) 1987-11-12
AU7089887A (en) 1987-10-09
DE3610508A1 (de) 1987-09-17
CA1300932C (fr) 1992-05-19
EP0237626B1 (fr) 1989-11-02

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