EP1413399B1 - Clef à cliquet - Google Patents

Clef à cliquet Download PDF

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Publication number
EP1413399B1
EP1413399B1 EP20030019741 EP03019741A EP1413399B1 EP 1413399 B1 EP1413399 B1 EP 1413399B1 EP 20030019741 EP20030019741 EP 20030019741 EP 03019741 A EP03019741 A EP 03019741A EP 1413399 B1 EP1413399 B1 EP 1413399B1
Authority
EP
European Patent Office
Prior art keywords
pawl
teeth
annular gear
space
annular
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
EP20030019741
Other languages
German (de)
English (en)
Other versions
EP1413399A2 (fr
EP1413399A3 (fr
Inventor
Terence Chen
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.)
Individual
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
Priority claimed from US10/254,592 external-priority patent/US6779422B2/en
Application filed by Individual filed Critical Individual
Publication of EP1413399A2 publication Critical patent/EP1413399A2/fr
Publication of EP1413399A3 publication Critical patent/EP1413399A3/fr
Application granted granted Critical
Publication of EP1413399B1 publication Critical patent/EP1413399B1/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
    • 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 present invention relates to a one-way wrench.
  • the closest prior art is considered document DE 20001237 U1 .
  • a conventional one-way wrench 60 includes a handle 62 and an annular head 64 formed at an end of the handle 62.
  • the annular head 64 includes a circular space 66 defined therein.
  • a crescent space 68 In the wall of the crescent space 68 is defined a semi-circular space 70.
  • An annular gear 72 is put in the circular space 66.
  • the annular gear 72 includes a toothed internal face 74 for engagement with a bolt or nut and a toothed external face 76.
  • a pawl 78 is put in the crescent space 68.
  • the present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.
  • Figure 1 is a perspective view of a one-way wrench according to the preferred embodiment of the present invention.
  • Figure 2 is an exploded view of the one-way wrench of Figure 1 .
  • Figure 3 is a cross-sectional view of the one-way wrench of Figure 1 pivoted clockwise.
  • Figure 4 is similar to Figure 3 but showing the one-way wrench pivoted counterclockwise.
  • Figure 5 is similar to Figure 4 but showing how the one-way wrench prevents driving a bolt or nut counterclockwise.
  • Figure 6 is a top view of a conventional one-way wrench pivoted clockwise.
  • Figure 7 is similar to Figure 6 but showing the conventional one-way wrench pivoted counterclockwise.
  • a one-way wrench 10 includes a handle 11 and an annular head 12 formed at an end of the handle 11.
  • the annular head 12 includes a circular space 13 defined therein.
  • a crescent space 14 In the wall of the crescent space 14 is defined a hole 15.
  • the annular gear 20 is put in the circular space 13.
  • the annular gear 20 includes a plurality of teeth 21 extending from an internal face for engagement with a bolt or nut (not shown) and a plurality of teeth 22 extending from an external face.
  • a pawl 30 is put in the crescent space 14.
  • the pawl 30 includes a first side, a second side opposite to the first side, a first end and a second end opposite to the first end.
  • the pawl 30 includes a plurality of teeth 31 extending from the first side for engagement with the teeth 22, a first protrusion 32 extending from the second side near the first end, a second protrusion 34 extending from the second side near the second end and an insert 33 extending from the second end.
  • the teeth 22 and 31 are ratchets in order to emphasize one-way rotation. In other embodiments, the teeth 22 and 31 may however be ordinary teeth.
  • a user can pivot the handle 11 clockwise so as to rotate the annular head 12 clockwise.
  • the wall of the crescent space 14 pushes the first protrusion 32 and therefore the pawl 30 clockwise.
  • the pawl 30 rotates the annular gear 20 clockwise.
  • the annular gear 20 accordingly rotates a bolt or nut in engagement therewith.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gears, Cams (AREA)
  • Transmission Devices (AREA)

Claims (5)

  1. Clé à cliquet (10) comprenant :
    une tête annulaire (12) comprenant un espace circulaire (13) défini dans celle-ci et un espace en croissant (14) défini dans la paroi de l'espace circulaire (13) ;
    une roue annulaire (20) placée dans l'espace circulaire (13), la roue annulaire (20) comprenant des dents (22) s'étendant depuis une face externe ;
    un cliquet (30) placé dans l'espace en croissant (14), le cliquet (30) comprenant des dents (31) s'étendant depuis un premier côté pour se mettre en prise avec les dents (22) de la roue annulaire (20) pour limiter la rotation de la roue annulaire à une seule direction, et une première protubérance (32) s'étendant depuis un deuxième côté, opposé au premier côté, près d'une première extrémité du cliquet, et
    un ressort élastique (40) disposé entre le cliquet (30) et la paroi de l'espace en croissant (14) ; dans laquelle, quand on fait pivoter la tête annulaire (12) dans ladite direction, la paroi de l'espace en croissant (14) pousse la première protubérance (32) et le cliquet (30) entraîne la roue annulaire (20) avec la tête annulaire (12), caractérisée en ce que :
    le cliquet (30) comprend en outre une deuxième protubérance (34) s'étendant depuis le deuxième côté, près d'une deuxième extrémité opposée à la première extrémité, et un insert (33) s'étendant depuis ladite deuxième extrémité du cliquet, le ressort élastique étant disposé entre l'insert (33) et la paroi de l'espace en croissant (14) ; et en ce que
    quand on fait pivoter la tête annulaire (12) dans une direction opposée à la première direction et que les dents (31) du cliquet (30) entrent en contact avec les dents (22) de la roue annulaire (20), le ressort élastique (40) est comprimé jusqu'à ce que la paroi de l'espace en croissant (14) pousse la deuxième protubérance (34) afin de faire pivoter la première extrémité du cliquet (30) et de dégager le cliquet de la roue annulaire (20), de manière à empêcher ledit cliquet (30) d'entraîner la roue annulaire (20) dans ladite direction opposée.
  2. Clé à cliquet (10) selon la revendication 1, comprenant un manche (11) s'étendant depuis la tête annulaire (12).
  3. Clé à cliquet (10) selon la revendication 1, dans laquelle toutes les dents (22 ; 31) sont des rochets.
  4. Clé à cliquet (10) selon la revendication 1, dans laquelle la tête annulaire (12) comprend un trou (15) défini dans la paroi de l'espace en croissant (14) pour recevoir le ressort élastique (40).
  5. Clé à cliquet (10) selon la revendication 1, dans laquelle le ressort (40) est un ressort hélicoïdal.
EP20030019741 2002-09-26 2003-08-29 Clef à cliquet Expired - Lifetime EP1413399B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/254,592 US6779422B2 (en) 2002-09-16 2002-09-26 Ratchet wrench that may prevent jamming during operation
US254592 2002-09-26

Publications (3)

Publication Number Publication Date
EP1413399A2 EP1413399A2 (fr) 2004-04-28
EP1413399A3 EP1413399A3 (fr) 2004-05-06
EP1413399B1 true EP1413399B1 (fr) 2011-11-09

Family

ID=32068151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030019741 Expired - Lifetime EP1413399B1 (fr) 2002-09-26 2003-08-29 Clef à cliquet

Country Status (1)

Country Link
EP (1) EP1413399B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049808B4 (de) * 2009-10-16 2017-02-23 Yu Tang Chen Ratschenschlüssel für eine Zugrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6164167A (en) * 1998-06-22 2000-12-26 Chen; Yu-Tang Ratchet wrench having gear driven pawl
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
DE20001237U1 (de) * 2000-01-25 2000-04-27 Hung, Kun-Chih, Ta Li, Taichung Ratsche
DE60137316D1 (de) * 2001-06-21 2009-02-26 Hand Tool Design Corp Umkehrbarer Ratschenschlüssel für hohe Drehmomente
US6647832B2 (en) * 2001-07-27 2003-11-18 Bobby Hu Wrench having two rigid supporting areas for a pawl
US6415691B1 (en) * 2001-08-29 2002-07-09 Mu Lin Chen Ratchet wrench structure having a high torsion driving action along dual directions
US6450066B1 (en) * 2001-10-19 2002-09-17 Bobby Hu Head of a wrench handle
DE20200403U1 (de) * 2002-01-11 2002-05-16 Chen, Mu-Lin, Taichung Ratschenschlüssel
TW547254U (en) * 2002-02-08 2003-08-11 Yu-Tang Chen Direction changing mechanism for reversible type ratchet wrench

Also Published As

Publication number Publication date
EP1413399A2 (fr) 2004-04-28
EP1413399A3 (fr) 2004-05-06

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