EP0187613B1 - Ratchenschlüssel - Google Patents

Ratchenschlüssel Download PDF

Info

Publication number
EP0187613B1
EP0187613B1 EP85710001A EP85710001A EP0187613B1 EP 0187613 B1 EP0187613 B1 EP 0187613B1 EP 85710001 A EP85710001 A EP 85710001A EP 85710001 A EP85710001 A EP 85710001A EP 0187613 B1 EP0187613 B1 EP 0187613B1
Authority
EP
European Patent Office
Prior art keywords
housing
wrench
handle
change
end position
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
Application number
EP85710001A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0187613A1 (de
Inventor
Klaus Neuhaus
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.)
Stahlwille Eduard Wille GmbH and Co KG
Original Assignee
Eduard Wille 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 Eduard Wille GmbH and Co KG filed Critical Eduard Wille GmbH and Co KG
Priority to AT85710001T priority Critical patent/ATE31497T1/de
Priority to EP85710001A priority patent/EP0187613B1/de
Priority to DE8585710001T priority patent/DE3561232D1/de
Priority to ES1985296369U priority patent/ES296369Y/es
Priority to KR1019850009933A priority patent/KR920011055B1/ko
Priority to IN125/MAS/86A priority patent/IN166576B/en
Publication of EP0187613A1 publication Critical patent/EP0187613A1/de
Priority to US07/109,502 priority patent/US4770072A/en
Priority to JP1987174931U priority patent/JPH0426218Y2/ja
Application granted granted Critical
Publication of EP0187613B1 publication Critical patent/EP0187613B1/de
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
    • 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

  • Ratchet wrenches convert a reciprocating movement into a rotary movement.
  • a threaded part for. B. a screw or nut, tightened or loosened.
  • a drive member driven in one direction via a ratchet wheel usually has a square on which a suitable tool can be placed depending on the drive form of the threaded part to be tightened or loosened.
  • Such a ratchet wrench is usually switchable in the sense that when the ratchet wrench moves back and forth, the tool rotates either in one or the other sense, in order to selectively tighten or loosen threaded parts in this way, or to turn threaded parts with a right or tighten left-hand thread.
  • a drive member is rotatably mounted in a housing.
  • a ratchet wheel with teeth is provided on the drive member.
  • a locking piece provided with two locking lugs is rotatably arranged in the housing between two end positions.
  • the locking piece has a cam which interacts with a ball under the influence of a detent spring such that the locking piece is resiliently pressed either into one or into the other end position.
  • the locking piece can optionally be switched to one or the other end position.
  • one or the other end of the pivotable locking piece protrudes laterally out of the housing in each of the two end positions. Switching is done by pressing on the protruding ends. The user attacks directly on the locking piece sitting in the head part.
  • Switchable ratchet wrenches are known, in which the switching is carried out by actuators which are provided on the handle part.
  • a switchable ratchet wrench is known from US-A-4 308 769, in which the locking piece arranged in the head part of the ratchet wrench also has a spring-loaded linkage. a finger piece that can be triggered by a pivoting movement is connected, which is arranged in front of the end of the handle part facing away from the head part.
  • the ratchet wheel works together with a resilient wire and a pair of locking pieces.
  • This resilient wire sits off-center on a rod which is rotatably mounted in the tubular handle part and is connected to a sleeve rotatably mounted on the handle part.
  • the resilient wire can be brought into contact with one or the other locking piece, so that it locks the rotary movement of the locking wheel in one direction relative to the housing and releases it in the other direction.
  • a switchable ratchet wrench is known from US Pat. No. 3,650,165, in which the drive element is a ratchet wheel with axial grooves of rectangular shape arranged along the circumference Has cross-section.
  • a spring-loaded piston is guided in the handle part and carries at its end a sawtooth-shaped attachment in cross section. This approach intervenes in the grooves.
  • the drive element is taken along via the steep flank of the shoulder.
  • the shoulder deflects resiliently via an inclined flank.
  • the spring-loaded piston is connected to an actuator which protrudes from the handle part on the end of the handle part facing away from the head part. By means of this actuator, the piston can be rotated by 180 °, whereby a reversal of the driving direction is achieved.
  • Constructions in which the locking piece can be pivoted via a switching finger in the form of a rod which is articulated on the switching piece and are longitudinally movable are complex and not very stable.
  • the ratchet wrench housings are usually manufactured as steel forgings. Such housings are therefore relatively heavy. The production is also complex.
  • the invention has for its object to provide a robust and simple construction of a generic ratchet wrench. which allows switching with one hand on the handle.
  • the detent spring does not act directly on the locking piece. Rather, the detent spring acts on the shift finger, which is pressed into one of two stable positions. Switching takes place by a swiveling movement of the shift finger by means of a slide which is guided transversely in the grip part and acts on the shift finger. The shift finger then moves the locking piece, which is loaded by the catch spring only over the shift finger.
  • Embodiments of the invention are the subject of the dependent claims.
  • the switchable ratchet wrench contains a housing 10 with a head part 12 and a handle part 14.
  • a drive member 16 that can be coupled to the tool is rotatably mounted.
  • a ratchet wheel 18 is provided on the drive member 16.
  • a locking piece 20 is rotatably arranged in the housing 10 between two end positions. In one end position, which is shown in FIGS. 1 and 2, the blocking piece can block the rotary movement of the blocking wheel 18 in a first direction, namely clockwise. In a second, opposite direction, namely counterclockwise, the ratchet wheel 18 is released by the locking piece 20.
  • the ratchet wheel 18 and the ratchet piece 20 are provided with teeth in the usual manner, with teeth of the ratchet piece 20 engaging in the teeth of the ratchet wheel 18 in each of the end positions. It can be seen that in the illustrated end position of the locking piece 20, when the locking wheel 18 rotates clockwise relative to the housing, the locking wheel 18 and the locking piece 20 block each other.
  • the lines of action of the forces transmitted by the flanks of the teeth lying against one another essentially run through the bearing shaft 22 of the locking piece 20.
  • the locking piece 20 can deflect when the locking wheel 18 rotates counter to the housing 10.
  • the lines of action of the forces transmitted via the tooth flanks run essentially tangentially to the bearing shaft of the locking piece 20.
  • the reverse is in the other end position of the locking piece 20. Then the locking wheel 18 can be blocked in the second direction, that is to say counterclockwise, with respect to the housing.
  • the ratchet wheel 18, on the other hand, is released in the first direction, ie clockwise.
  • a detent spring 24 is provided, by means of which the locking piece 20 is in each case resiliently held in one or the other end position in a manner to be described.
  • a switching finger 26 Arranged in the interior of the housing 10 is a switching finger 26 which extends into the grip part 14 and which engages with a head-side end 28 on the locking piece and through which the locking piece 20 can be pivoted from one end position to the other.
  • a switching device 30 which is attached to the handle part 14 and engages on the shift finger, by means of which the blocking piece 20 moves from one to the other via the shift finger 26 other end position is switchable.
  • the shift finger 26 can be pivoted here between two positions within the housing 10, each of which is assigned to an end position of the locking piece 20.
  • the detent spring 24 engages on the handle-side end 32 of the shift finger 26 facing away from the locking piece 20 and resiliently holds it in one or the other of the said. Positions.
  • the switching device 30 contains a slide 34 which is displaceably guided in the transverse direction of the handle part 14.
  • the locking piece 20 is mounted with the bearing shaft 22 so as to be rotatable about an axis in the housing 10 and has a recess 36 on its circumference.
  • the switching finger 26 projects into the recess 36 with its end 28.
  • the recess 36 has a triangular basic shape and two surfaces 38 and 40 which are essentially perpendicular to one another.
  • the end face of the shift finger 26 rests resiliently on one of the two surfaces 38 or 40 in both positions.
  • a longitudinal channel 42 with two mutually parallel longitudinal surfaces 44 and 46 is formed in the housing 10.
  • the shift finger 26 has an elongated rhombic basic shape with four flat side surfaces 48, 50, 52 and 54.
  • the shift finger 26 is arranged in the longitudinal channel 42 in such a way that in the one position, which is shown in FIG. 2, a first pair of diametrically opposed side surfaces 48 and 52 abuts the longitudinal surfaces 44 and 46 of the longitudinal channel 42. In the other position, the second pair of diametrically opposite side surfaces 54, 50 abuts the longitudinal surfaces 44 and 46 of the longitudinal channel 42.
  • a ball 58 loaded by the detent spring 24 is seated in an end face 56 of the longitudinal channel 42, on its end facing away from the head part 12.
  • the longitudinal channel 42 is adjoined by a cylindrical or rectangular recess 60 of smaller cross section than the longitudinal channel.
  • the detent spring 24 and the ball 58 are seated in this recess 60.
  • the detent spring 24 is pretensioned and attempts to push the ball 58 out of the recess 60 in the direction of the head part 12.
  • the handle-side end 32 of the shift finger 26 facing away from the locking piece 20 is seated in each of the two positions between a surface of the ball 58 and a longitudinal surface, e.g. B.
  • the ball 58 thus not only defines the two latched positions of the shift finger 26, but also transmits an axial force to the shift finger 26, by means of which the locking piece 20 is held in spring engagement with the locking wheel 18. If the ratchet wheel 18 rotates counterclockwise in Fig. 2 relative to the housing 10, then the teeth of the locking piece 20 are pressed against this spring force out of engagement with the teeth of the ratchet wheel. This intervention is then immediately restored.
  • the slide 34 is guided perpendicular to the longitudinal direction of the longitudinal channel 42 in the handle part 14 and provided with an opening 62.
  • the shift finger 26 protrudes with its ball-side end 32 through the opening, two positions of the slide 34 being determined by the two latched positions of the shift finger 26. In each of these positions, the slide 34 protrudes a bit on one or the other side over the outer surface 64 or 66 of the handle part 14. The switchover then takes place by pressing this protruding part of the slide 34.
  • the shift finger 26 is pivoted. The end 32 presses the ball 58 against the action of the detent spring 24 into the recess 60 until the dead center is exceeded.
  • a particularly light and easy to manufacture housing 10 is obtained in that the housing has a flat plastic part 68 with opposite, parallel plane surfaces 70 and 72 and a pair of metal plates 74 and 76, which rest on these plane surfaces 70 and 72 and z .
  • B. rivet bolts 78 are connected to one another and to the plastic part 68.
  • the metal plates 74 and 76 are preferably steel plates, which represent a material with high wear resistance and are rigid in their planes.
  • the plastic part 68 has a circular opening 80 in the area of the drive member 16, which is followed by a further opening 82. Following the further opening 82, a recess forming the longitudinal channel 42 is provided in one of the flat surfaces, namely the flat surface 70, of the plastic part 68, which is covered by the metal plate 74.
  • the drive member 16 with the ratchet wheel 18 is seated in the circular opening 80 and is supported with trunnions 84, 86 in the metal plates 74 and 76, respectively.
  • the locking piece 20 sits in the further opening 82 and is also rotatably supported with its bearing shaft 22 in the metal plates 74 and 76.
  • Each of the flat surfaces 70 and 72 is each formed by the bottom of a flat recess in the plastic part 68, the dimensions of which essentially correspond to those of the associated metal plate 74 and 76, so that the metal plates 74 and 76 laterally from the edges 88 and 90 of the Deepening be held.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Valve Device For Special Equipments (AREA)
  • Flexible Shafts (AREA)
EP85710001A 1985-01-07 1985-01-07 Ratchenschlüssel Expired EP0187613B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AT85710001T ATE31497T1 (de) 1985-01-07 1985-01-07 Ratchenschluessel.
EP85710001A EP0187613B1 (de) 1985-01-07 1985-01-07 Ratchenschlüssel
DE8585710001T DE3561232D1 (en) 1985-01-07 1985-01-07 Ratchet wrench
ES1985296369U ES296369Y (es) 1985-01-07 1985-12-16 Llave resersible de carraca
KR1019850009933A KR920011055B1 (ko) 1985-01-07 1985-12-28 가역 래치트 렌치
IN125/MAS/86A IN166576B (enrdf_load_stackoverflow) 1985-01-07 1986-02-24
US07/109,502 US4770072A (en) 1985-01-07 1987-10-16 Reversible ratchet wrench
JP1987174931U JPH0426218Y2 (enrdf_load_stackoverflow) 1985-01-07 1987-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85710001A EP0187613B1 (de) 1985-01-07 1985-01-07 Ratchenschlüssel

Publications (2)

Publication Number Publication Date
EP0187613A1 EP0187613A1 (de) 1986-07-16
EP0187613B1 true EP0187613B1 (de) 1987-12-23

Family

ID=8194606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85710001A Expired EP0187613B1 (de) 1985-01-07 1985-01-07 Ratchenschlüssel

Country Status (8)

Country Link
US (1) US4770072A (enrdf_load_stackoverflow)
EP (1) EP0187613B1 (enrdf_load_stackoverflow)
JP (1) JPH0426218Y2 (enrdf_load_stackoverflow)
KR (1) KR920011055B1 (enrdf_load_stackoverflow)
AT (1) ATE31497T1 (enrdf_load_stackoverflow)
DE (1) DE3561232D1 (enrdf_load_stackoverflow)
ES (1) ES296369Y (enrdf_load_stackoverflow)
IN (1) IN166576B (enrdf_load_stackoverflow)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223971A (en) * 1988-10-19 1990-04-25 Jessie Chow Ratchet wrench
EP0437007A1 (en) * 1989-07-20 1991-07-17 Chiro Tools Mfg., Corp. Improved wrench
US5119701A (en) * 1991-01-15 1992-06-09 Wei Hung Yin Base seat of a dual-directional ratchet wrench
US5271300A (en) * 1992-07-14 1993-12-21 Snap-On Tools Corporation Composite hand tool
CA2112279A1 (en) * 1993-10-28 1995-04-29 Gregory A. Zurbuchen Composite ratchet wrench and method of making same
US5626061A (en) * 1995-07-13 1997-05-06 Stanley Mechanics Tools Composite ratchet
USD381567S (en) * 1995-11-07 1997-07-29 Kaiser Michael C Ratchet box wrench
US5713251A (en) * 1995-11-15 1998-02-03 Snap-On Technologies, Inc. Composite box wrench with ratchet module insert
US5765669A (en) 1996-01-26 1998-06-16 Dwbh Ventures Ltd. Reversible, infinitely variable wedging element, force transfer device
US6318216B1 (en) 1997-05-07 2001-11-20 Snap-On Technologies, Inc. Composite box wrench with reinforcing and retaining structure
SI20257B (sl) * 1999-04-06 2008-06-30 Tone OFENTAVŠEK Električno izolirano orodje z zaskočnim mehanizmom
US20040194584A1 (en) * 1999-04-06 2004-10-07 Tone Ofentavsek Electrically insulated hand tool with a detent mechanism
US6260447B1 (en) * 1999-06-22 2001-07-17 Heinz Hutt Ratchet tool holder
US6148695A (en) 1999-08-03 2000-11-21 Hu; Bobby Ratchet wheel with asymmetric arcuate concave teeth or non-arcuate concave teeth and ratcheting tools with such ratchet wheel
US6431031B1 (en) 1999-12-16 2002-08-13 Bobby Hu Reversible ratcheting tool with a smaller head
US6568299B2 (en) 1999-12-16 2003-05-27 Bobby Hu Reversible ratcheting tool with a smaller head
TW418748U (en) 2000-01-11 2001-01-11 Hu Hou Fei Ratchet wrench
TW413113U (en) * 2000-02-03 2000-11-21 Hu Hou Fei Ratchet tool
TW408653U (en) * 2000-02-03 2000-10-11 Hu Hou Fei Ratcheting tool
JP3515763B2 (ja) 2000-03-13 2004-04-05 厚飛 胡 小ヘッドと改善駆動トルクを具えたリバーシブルラチェット工具
TW428513U (en) 2000-07-21 2001-04-01 Hu Hou Fei Locating device of a direction switch and ratchet tools using the same
TW437521U (en) 2000-08-22 2001-05-28 Hu Hou Fei Ratchet driven tool
TW444633U (en) 2000-09-01 2001-07-01 Hu Hou Fei Ratchet tool
US6745647B2 (en) 2000-11-29 2004-06-08 Mei-Chen Wang Wrench having a universal-joint ratchet wheel
TW489701U (en) 2001-02-19 2002-06-01 Hou-Fei Hu A ratchet driven wrench capable of easily manufacturing and fabricating
US6722233B2 (en) * 2001-03-21 2004-04-20 Liao I-He Pawl shifting device for a ratchet tool
US6807882B2 (en) 2001-05-07 2004-10-26 Bobby Hu Wrench with a simplified structure
US6722234B2 (en) 2001-05-14 2004-04-20 Bobby Hu Easy-to-operate and easy-to-assemble ratcheting-type wrench
US6460431B1 (en) * 2001-06-26 2002-10-08 Yu Tang Chen Ratchet tool
TW483365U (en) 2001-07-13 2002-04-11 Hou-Fei Hu High torque wrench
TW483377U (en) 2001-07-13 2002-04-11 Hou-Fei Hu Micro small torque wrench with constant torque value
US6647832B2 (en) 2001-07-27 2003-11-18 Bobby Hu Wrench having two rigid supporting areas for a pawl
US6539825B1 (en) 2001-09-20 2003-04-01 Yen-Wen Lin Single direction ratcheting wrench with stuck prevention and ratcheting direction indication
TW503802U (en) 2001-10-17 2002-09-21 Hou-Fei Hu Invertible ratchet wrench
US6450066B1 (en) 2001-10-19 2002-09-17 Bobby Hu Head of a wrench handle
US6520051B1 (en) 2001-12-27 2003-02-18 Bobby Hu Head of a wrench handle
TW506308U (en) 2002-02-08 2002-10-11 Hou-Fei Hu Improved structure for ratchet wrench
US6945141B2 (en) 2002-04-22 2005-09-20 Bobby Hu Reversible ratchet type wrench
TW567123B (en) 2002-07-22 2003-12-21 Hou-Fei Hu Ratchet wrench capable of fast rotation
TWI245684B (en) 2002-08-05 2005-12-21 Yan-Wen Lin Simple ratchet wrench
US20070113710A1 (en) * 2005-11-18 2007-05-24 Chen Chia Y Ratchet wrench
TW201238719A (en) * 2011-03-24 2012-10-01 Yi-Hong Lin Ratchet wrench
TWI708660B (zh) * 2019-08-29 2020-11-01 特典工具股份有限公司 棘輪扳手
TWI692389B (zh) * 2019-08-29 2020-05-01 特典工具股份有限公司 棘輪扳手
US11981017B2 (en) 2021-05-05 2024-05-14 Snap-On Incorporated Ratchet with toggle trigger
TWI771034B (zh) * 2021-06-03 2022-07-11 朝程工業股份有限公司 可單手握持換向之動力工具

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096452A2 (en) * 1982-05-06 1983-12-21 John Welsh Lang Ratchet wrench with offset handle

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US2058855A (en) * 1935-10-09 1936-10-27 John W Chapman Ratchet screw driver
US2701977A (en) * 1953-05-07 1955-02-15 Wright Tool And Forge Company Reversible ratchet wrench
US3233481A (en) * 1963-10-25 1966-02-08 Kelsey Hayes Co Ratchet wrench
US3265171A (en) * 1964-06-22 1966-08-09 Luther E Kilness One way reversible clutch for wrench
FR1486714A (fr) * 1966-07-13 1967-06-30 Leytool Ltd Clé plate à cliquet
US3467231A (en) * 1968-02-12 1969-09-16 Moore Drop Forging Co Pawl reversing mechanism for ratchet wrenches
US3608402A (en) * 1969-09-02 1971-09-28 Bradley And Wharton Ratchet tool
US3650165A (en) * 1969-11-21 1972-03-21 Paul W Wolfe Ratchet tool
FR2333615A1 (fr) * 1975-12-05 1977-07-01 Contini Yves Levier de serrage pour cles a douilles a entrainement unidirectionnel reversible
AT368055B (de) * 1978-09-21 1982-09-10 Teufel Johann Steckschluessel mit ratsche und stirnraduebersetzungsgetriebe
US4277989A (en) * 1979-05-01 1981-07-14 Tracy Kurt L Ratchet wrench handle
US4277990A (en) * 1979-11-14 1981-07-14 Duro Metal Products Company Ratchet wrench
US4300413A (en) * 1980-03-03 1981-11-17 Joseph Garofalo Ratchet wrench with one-hand control and neutral capability
US4308769A (en) * 1980-06-02 1982-01-05 Bertha Rantanen Reversing ratcheting wrench
US4425828A (en) * 1981-11-30 1984-01-17 Berdinner Jr E J Right angle drive ratchet screw-driver
US4488460A (en) * 1982-07-28 1984-12-18 Easco Corporation Ergonomic handle for hand tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096452A2 (en) * 1982-05-06 1983-12-21 John Welsh Lang Ratchet wrench with offset handle

Also Published As

Publication number Publication date
US4770072A (en) 1988-09-13
DE3561232D1 (en) 1988-02-04
ES296369Y (es) 1988-04-16
KR920011055B1 (ko) 1992-12-26
JPH0426218Y2 (enrdf_load_stackoverflow) 1992-06-24
JPS63100155U (enrdf_load_stackoverflow) 1988-06-29
EP0187613A1 (de) 1986-07-16
ES296369U (es) 1987-10-16
KR860005680A (ko) 1986-08-11
IN166576B (enrdf_load_stackoverflow) 1990-06-09
ATE31497T1 (de) 1988-01-15

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