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EP1413399B1 - Ratschenschlüssel - Google Patents

Ratschenschlüssel 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
English (en)
French (fr)
Other versions
EP1413399A3 (de
EP1413399A2 (de
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/de
Publication of EP1413399A3 publication Critical patent/EP1413399A3/de
Application granted granted Critical
Publication of EP1413399B1 publication Critical patent/EP1413399B1/de
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)
  • Transmission Devices (AREA)
  • Gears, Cams (AREA)

Claims (5)

  1. Einwegschlüssel (10), der Folgendes umfasst:
    einen ringförmigen Kopf (12), der einen kreisförmigen Raum (13), der darin abgegrenzt ist, und einen sichelförmigen Raum (14) umfasst, der in der Wand des kreisförmigen Raums (13) abgegrenzt ist;
    einen ringförmigen Zahnkranz (20), der in den kreisförmigen Raum (13) eingesetzt ist, wobei der ringförmige Zahnkranz (20) Zähne (22) umfasst, die sich von einer Außenfläche erstrecken;
    eine Sperrklinke (30), die in den sichelförmigen Raum (14) eingesetzt ist, wobei die Sperrklinke (30) Zähne (31), die sich von einer ersten Seite zum Ineinandergreifen mit den Zähnen (22) des ringförmigen Zahnkranzes (20) erstrecken, um die Drehung des ringförmigen Zahnkranzes in den einen Weg zu begrenzen, und einen ersten Vorsprung (32) umfasst, der sich von einer zweiten Seite erstreckt, die der ersten Seite in der Nähe eines ersten Endes der Sperrklinke entgegengesetzt ist, und
    eine Sprungfeder (40), die zwischen der Sperrklinke (30) und der Wand des sichelförmigen Raums (14) angeordnet ist; wobei die Wand des sichelförmigen Raums (14), wenn der ringförmige Kopf (12) in den einen Weg geschwenkt wird, den ersten Vorsprung (32) drückt und die Sperrklinke (30) den ringförmigen Zahnkranz (20) mit dem ringförmigen Kopf (12) antreibt, dadurch gekennzeichnet, dass
    die Sperrklinke (30) ferner einen zweiten Vorsprung (34), der sich von der zweiten Seite in der Nähe eines zweiten Endes entgegengesetzt zum ersten Ende erstreckt, und einen Einsatz (33) umfasst, der sich von dem zweiten Ende der Sperrklinke erstreckt, wobei die Sprungfeder zwischen dem Einsatz (33) und der Wand des sichelförmigen Raumes (14) angeordnet ist; und dadurch dass
    die Sprungfeder (40), wenn der ringförmige Kopf (12) in die Richtung entgegengesetzt zu dem einen Weg geschwenkt wird und die Zähne (31) der Sperrklinke (30) die Zähne (22) des ringförmigen Zahnkranzes (20) blockieren, zusammengedrückt wird, bis die Wand des sichelförmigen Raums (14) den zweiten Vorsprung (34) drückt, um das erste Ende der Sperrklinke (30) zu schwenken und die Sperrklinke von dem ringförmigen Zahnkranz (20) außer Eingriff zu bringen, um zu verhindern, dass die Sperrklinke (30) den ringförmigen Zahnkranz (20) in die entgegengesetzte Richtung antreibt.
  2. Einwegschlüssel (10) nach Anspruch 1, der einen Griff (11) umfasst, der sich vom ringförmigen Kopf (12) erstreckt.
  3. Einwegschlüssel (10) nach Anspruch 1, wobei alle Zähne (22; 31) Ratschen sind.
  4. Einwegschlüssel (10) nach Anspruch 1, wobei der ringförmige Kopf (12) ein Loch (15) umfasst, das in der Wand des sichelförmigen Raums (14) abgegrenzt ist, um die Sprungfeder (40) aufzunehmen.
  5. Einwegschlüssel (10) nach Anspruch 1, wobei die Feder (40) eine Schraubenfeder ist.
EP20030019741 2002-09-26 2003-08-29 Ratschenschlüssel Expired - Lifetime EP1413399B1 (de)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=32068151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030019741 Expired - Lifetime EP1413399B1 (de) 2002-09-26 2003-08-29 Ratschenschlüssel

Country Status (1)

Country Link
EP (1) EP1413399B1 (de)

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
EP1413399A3 (de) 2004-05-06
EP1413399A2 (de) 2004-04-28

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