EP2138276B1 - Clé dynamométrique dont les valeurs de couple peuvent être réglées facilement et rapidement - Google Patents

Clé dynamométrique dont les valeurs de couple peuvent être réglées facilement et rapidement Download PDF

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Publication number
EP2138276B1
EP2138276B1 EP08158960A EP08158960A EP2138276B1 EP 2138276 B1 EP2138276 B1 EP 2138276B1 EP 08158960 A EP08158960 A EP 08158960A EP 08158960 A EP08158960 A EP 08158960A EP 2138276 B1 EP2138276 B1 EP 2138276B1
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Prior art keywords
adjusting knob
handle
torque wrench
accordance
adjusting unit
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EP08158960A
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German (de)
English (en)
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EP2138276A1 (fr
Inventor
Jih Chun Wu
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Individual
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Individual
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Priority to EP08158960A priority Critical patent/EP2138276B1/fr
Priority to PL08158960T priority patent/PL2138276T3/pl
Priority to ES08158960T priority patent/ES2402265T3/es
Publication of EP2138276A1 publication Critical patent/EP2138276A1/fr
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    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means

Definitions

  • the present invention relates to a wrench, and more particularly to a torque wrench whose torque values can be preset, fixed and adjusted.
  • a conventional torque wrench is used to lock and detach a workpiece, such as a screw and the like.
  • the torque wrench includes a plurality of preset torque values (such as pounds) so as to control the tightening extent of the workpiece to prevent the workpiece from being distorted or broken due to an excessive torque.
  • the torque values of the torque wrench usually have a larger ranges, such as from 50 through 75 to 105 pounds.
  • a user has to adjust the torque values of the torque wrench step by step to change the torque values successively from 50 through 75 to 105 pounds, thereby wasting the working time, and thereby causing inconvenience to the user in adjustment of the torque values of the torque wrench.
  • the present invention is to mitigate and/or obviate the disadvantage of the conventional torque wrench.
  • the primary objective of the present invention is to provide a torque wrench whose torque values can be adjusted easily and quickly.
  • Another objective of the present invention is to provide a torque wrench, wherein the adjusting knob of the adjusting unit is initially pulled outwardly relative to the mounting sleeve of the operation bar and the linking rod and is then rotatable relative to the end portion of the handle so as to adjust the torque values of the torque wrench.
  • a further objective of the present invention is to provide a torque wrench, wherein a user only needs to pull and rotate the adjusting knob of the adjusting unit so as to adjust the torque values of the torque wrench, so that the torque values of the torque wrench is adjusted easily and quickly, thereby facilitating the user adjusting the torque values of the torque wrench.
  • a further objective of the present invention is to provide a torque wrench, wherein the adjusting knob of the adjusting unit is rotatable freely to directly reach any one of the torque values of the torque wrench, so that the user can adjust the torque values of the torque wrench freely and selectively according to the user's requirement without have to adjust the torque values of the torque wrench step by step, thereby facilitating the user operating the torque wrench.
  • the torque wrench further comprises a first bushing 13 mounted in the mounting sleeve 12 of the operation bar 10 and a second bushing 14 mounted in the mounting sleeve 12 of the operation bar 10, and the mounting sleeve 12 of the operation bar 10 has an inside defining a limit space 15 between the first bushing 13 and the second bushing 14.
  • the handle 20 has an outer wall provided with an elongate serrated anti-slip portion 21 to facilitate a user holding the handle 20.
  • the end portion 22 of the handle 20 protrudes outwardly from the mounting sleeve 12 of the operation bar 10, and the inner wall of the end portion 22 of the handle 20 is provided with a stepped stop portion 225 flush with an end face 16 of the mounting sleeve 12 of the operation bar 10 to stop the adjusting knob 41 of the adjusting unit 40.
  • the end portion 22 of the handle 20 has a ring shape, and the inner wall of the end portion 22 of the handle 20 has a first semi-circular periphery provided with the first toothed portion 221 and a second semi-circular periphery provided with the positioning grooves 222, 223 and 224.
  • the positioning grooves 222, 223 and 224 of the handle 20 are equally spaced from each other.
  • the adjusting knob 41 of the adjusting unit 40 is movably mounted on the linking rod 30 and is movable axially relative to the mounting sleeve 12 of the operation bar 10 and the linking rod 30 to a position where the second toothed portion 414 of the adjusting knob 41 is detached from the first toothed portion 221 of the handle 20 and the positioning block 415 of the adjusting knob 41 is detached from one of the positioning grooves 222, 223 and 224 of the handle 20 to unlock the adjusting knob 41 of the adjusting unit 40 from the end portion 22 of the handle 20 so that the adjusting knob 41 of the adjusting unit 40 is rotatable relative to the end portion 22 of the handle 20.
  • the adjusting knob 41 of the adjusting unit 40 has a first end extended into the end portion 22 of the handle 20 and provided with the second toothed portion 414 and the positioning block 415 and an enlarged second end protruding outwardly from the end portion 22 of the handle 20 and provided with a plurality of indicating numbers 416 each aligning with a respective one of the positioning grooves 222, 223 and 224 of the handle 20 when the positioning block 415 of the adjusting knob 41 is inserted into one of the positioning grooves 222, 223 and 224 of the handle 20.
  • the adjusting knob 41 of the adjusting unit 40 has an inner wall having a first end provided with a through hole 411 movable on the linking rod 30 and a second end provided with a receiving chamber 417 connected to the through hole 411.
  • the receiving chamber 417 of the adjusting knob 41 has a diameter greater than that of the through hole 411, and the inner wall of the adjusting knob 41 has a mediate portion provided with a stepped limit portion 412 located between the receiving chamber 417 and the through hole 411.
  • the through hole 411 of the adjusting knob 41 has a periphery provided with a first serrated portion 413.
  • the adjusting unit 40 further includes a threaded retaining member 44 screwed onto the linking rod 30, an elastic member 42 mounted on the linking rod 30 and biased between the threaded retaining member 44 and the adjusting knob 41 to push the adjusting knob 41 toward the mounting sleeve 12 of the operation bar 10 and the end portion 22 of the handle 20, a washer 43 mounted on the linking rod 30 and located between the threaded retaining member 44 and the elastic member 42, and an end cap 45 mounted on the adjusting knob 41 to cover the threaded retaining member 44, the washer 43, the elastic member 42 and the linking rod 30.
  • the threaded retaining member 44, the washer 43 and the elastic member 42 of the adjusting unit 40 are received in the receiving chamber 417 of the adjusting knob 41, and the end cap 45 of the adjusting unit 40 is mounted on an end portion of the receiving chamber 417 of the adjusting knob 41 to close the receiving chamber 417 of the adjusting knob 41.
  • the elastic member 42 of the adjusting unit 40 is biased between the washer 43 and the limit portion 412 of the adjusting knob 41.
  • the linking rod 30 is rotatable in the mounting sleeve 12 of the operation bar 10 by rotation of the adjusting knob 41 of the adjusting unit 40 relative to the end portion 22 of the handle 20.
  • the linking rod 30 has a first end 31 extending through the first bushing 13 and the through hole 411 of the adjusting knob 41 into the receiving chamber 417 of the adjusting knob 41 for mounting the elastic member 42 and the washer 43 of the adjusting unit 40, a second end 32 extending through the second bushing 14, and a mediate portion located between the first end 31 and the second end 32 and provided with an enlarged limit block 33 limited in the limit space 15 of the mounting sleeve 12 between the first bushing 13 and the second bushing 14.
  • the first end 31 of the linking rod 30 has a peripheral wall provided with a second serrated portion 34 engaged with the first serrated portion 413 of the adjusting knob 41 and has an end face provided with a screw bore 35 into which the threaded retaining member 44 is screwed.
  • a first one of the indicating numbers 416 is shown to indicate a first torque value of the torque wrench, such as 85 pounds, as shown in Fig. 5 .
  • the adjusting knob 41 of the adjusting unit 40 is movable outwardly relative to the mounting sleeve 12 of the operation bar 10 and the linking rod 30 from the position as shown in Fig. 3 to the position as shown in Fig. 6
  • the second toothed portion 414 of the adjusting knob 41 is detached from the first toothed portion 221 of the handle 20 and the positioning block 415 of the adjusting knob 41 is detached from the first one of the positioning grooves 222, 223 and 224 of the handle 20 to unlock the adjusting knob 41 of the adjusting unit 40 from the end portion 22 of the handle 20, so that the adjusting knob 41 of the adjusting unit 40 is rotatable relative to the end portion 22 of the handle 20.
  • the adjusting knob 41 of the adjusting unit 40 is pushed by the restoring force of the elastic member 42 to move toward the mounting sleeve 12 of the operation bar 10 and the linking rod 30 from the position as shown in Fig. 6 to the position as shown in Fig. 3 , so that the second toothed portion 414 of the adjusting knob 41 is engaged with the first toothed portion 221 of the handle 20 again, and the positioning block 415 of the adjusting knob 41 is locked in the second one of the positioning grooves 222, 223 and 224 of the handle 20.
  • a second one of the indicating numbers 416 is shown to indicate a second torque value of the torque wrench, such as 103 pounds, as shown in Fig. 7 .
  • the adjusting knob 41 of the adjusting unit 40 is movable outwardly relative to the mounting sleeve 12 of the operation bar 10 and the linking rod 30 from the position as shown in Fig. 3 to the position as shown in Fig. 6
  • the second toothed portion 414 of the adjusting knob 41 is detached from the first toothed portion 221 of the handle 20 and the positioning block 415 of the adjusting knob 41 is detached from the second one of the positioning grooves 222, 223 and 224 of the handle 20 to unlock the adjusting knob 41 of the adjusting unit 40 from the end portion 22 of the handle 20, so that the adjusting knob 41 of the adjusting unit 40 is rotatable relative to the end portion 22 of the handle 20.
  • the adjusting knob 41 of the adjusting unit 40 is pushed by the restoring force of the elastic member 42 to move toward the mounting sleeve 12 of the operation bar 10 and the linking rod 30 from the position as shown in Fig. 6 to the position as shown in Fig. 3 , so that the second toothed portion 414 of the adjusting knob 41 is engaged with the first toothed portion 221 of the handle 20 again, and the positioning block 415 of the adjusting knob 41 is locked in the third one of the positioning grooves 222, 223 and 224 of the handle 20.
  • a third one of the indicating numbers 416 is shown to indicate a second torque value of the torque wrench, such as 108 pounds, as shown in Fig. 8 .
  • the adjusting knob 41 of the adjusting unit 40 is initially pulled outwardly relative to the mounting sleeve 12 of the operation bar 10 and the linking rod 30 and is then rotatable relative to the end portion 22 of the handle 20 so as to adjust the torque values of the torque wrench.
  • a user only needs to pull and rotate the adjusting knob 41 of the adjusting unit 40 so as to adjust the torque values of the torque wrench, so that the torque values of the torque wrench is adjusted easily and quickly, thereby facilitating the user adjusting the torque values of the torque wrench.
  • the adjusting knob 41 of the adjusting unit 40 is rotatable freely to directly reach any one of the torque values of the torque wrench, so that the user can adjust the torque values of the torque wrench freely and selectively according to the user's requirement without have to adjust the torque values of the torque wrench step by step, thereby facilitating the user operating the torque wrench.

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

Claims (18)

  1. Clé dynamométrique comprenant :
    une barre de fonctionnement (10) ayant une première extrémité pourvue d'un manchon de montage (12) et une seconde extrémité pourvue d'une portion de commande (11),
    une poignée creuse (20) montée sur le manchon de montage de la barre de fonctionnement et ayant une portion d'extrémité ayant une paroi intérieure pourvue d'une pluralité de rainures de positionnement (222, 223, 224),
    une unité d'ajustage (40) montée sur la poignée et incluant un bouton d'ajustage (41) mobile par rapport à la portion d'extrémité de la poignée et ayant un bloc de positionnement (415) bloqué de manière détachable dans l'une des rainures de positionnement de la poignée pour bloquer de manière détachable le bouton d'ajustage de l'unité d'ajustage sur la portion d'extrémité de la poignée,
    caractérisée en ce que la paroi intérieure de la portion d'extrémité de la poignée creuse est pourvue d'une première portion dentée et une paroi extérieure du bouton d'ajustage est pourvue d'une seconde portion dentée en prise de manière détachable avec la première portion dentée de la poignée.
  2. Clé dynamométrique selon la revendication 1 comprenant de plus :
    une tige de jonction (30) montée dans le manchon de montage de la barre de fonctionnement et fixée au bouton d'ajustage (41) de l'unité d'ajustage pour limiter le bouton d'ajustage (41) de l'unité d'ajustage sur le manchon de montage de la barre de fonctionnement.
  3. Clé dynamométrique selon la revendication 2 dans laquelle le bouton d'ajustage (41) de l'unité d'ajustage est monté de manière mobile sur la tige de jonction et est mobile axialement par rapport au manchon de montage de la barre de fonctionnement (10) et à la tige de jonction vers une position où la seconde portion dentée du bouton d'ajustage est détachée de la première portion dentée de la poignée et le bloc de positionnement (415) du bouton d'ajustage est détaché de l'une des cannelures de positionnement de la poignée pour débloquer le bouton d'ajustage de l'unité d'ajustage de la portion d'extrémité de la poignée si bien que le bouton d'ajustage de l'unité d'ajustage est rotatif par rapport à la portion d'extrémité de la poignée.
  4. Clé dynamométrique selon la revendication 2 dans laquelle l'unité d'ajustage (40) comprend de plus :
    un élément de retenue fileté vissé sur la tige de jonction (30),
    un élément élastique monté sur la tige de jonction (30) et chargé entre l'élément de retenue fileté et le bouton d'ajustage pour pousser le bouton d'ajustage vers le manchon de montage de la barre de fonctionnement et la portion d'extrémité de la poignée.
  5. Clé dynamométrique selon la revendication 4 dans laquelle l'unité d'ajustage (40) comprend de plus :
    une rondelle montée sur la tige de jonction et située entre l'élément de retenue fileté et l'élément élastique,
    un capuchon d'extrémité monté sur le bouton d'ajustage pour couvrir l'élément de retenue fileté, la rondelle, l'élément élastique et la tige de jonction (30).
  6. Clé dynamométrique selon la revendication 5 dans laquelle
    le bouton d'ajustage (41) de l'unité d'ajustage a une paroi intérieure ayant une première extrémité pourvue d'un trou de passage mobile sur la tige de liaison (30) et une seconde extrémité pourvue d'une chambre de logement reliée au trou de passage,
    l'élément de retenue fileté, la rondelle et l'élément élastique de l'unité d'ajustage sont logés dans la chambre de logement du bouton d'ajustage,
    le capuchon d'extrémité de l'unité d'ajustage est monté sur une portion d'extrémité de la chambre de logement du bouton d'ajustage pour fermer la chambre de logement du bouton d'ajustage (41).
  7. Clé dynamométrique selon la revendication 6 dans laquelle
    la paroi intérieure du bouton d'ajustage (41) a une portion intermédiaire pourvue d'une portion à limite étagée située entre la chambre de logement et le trou de passage,
    l'élément élastique (42) de l'unité d'ajustage est chargé entre la rondelle et la portion de limite du bouton d'ajustage.
  8. Clé dynamométrique selon la revendication 6 dans laquelle
    la clé dynamométrique comprend de plus une première douille montée dans le manchon de montage (12) de la barre de fonctionnement (10) et une seconde douille montée dans le manchon de montage de la barre de fonctionnement,
    la tige de liaison (30) a une première extrémité qui s'étend à travers la première douille et le trou de passage du bouton d'ajustage dans la chambre de logement du bouton d'ajustage pour monter l'élément élastique et la rondelle de l'unité d'ajustage et une seconde extrémité s'étendant à travers la seconde douille.
  9. Clé dynamométrique selon la revendication 8 dans laquelle
    le trou de passage du bouton d'ajustage (41) a une périphérie pourvue d'une première portion dentelée,
    la première extrémité de la tige de liaison a une paroi périphérique pourvue d'une seconde portion dentelée en prise avec la première portion dentelée du bouton d'ajustage.
  10. Clé dynamométrique selon la revendication 8 dans laquelle la première extrémité de la tige de jonction (30) a une face d'extrémité pourvue d'un trou de vis dans lequel l'élément de retenue fileté est vissé.
  11. Clé dynamométrique selon la revendication 8 dans laquelle
    le manchon de montage (12) de la barre de fonctionnement (10) a un intérieur qui définit un espace de limite entre la première douille et la seconde douille,
    la tige de jonction a une portion intermédiaire située entre la première extrémité et la seconde extrémité et pourvue d'un bloc de limite élargi limité dans l'espace de limite du manchon de montage entre la première douille et la seconde douille.
  12. Clé dynamométrique selon la revendication 6 dans laquelle la chambre de logement du bouton d'ajustage (41) a un diamètre supérieur à celui du trou de passage.
  13. Clé dynamométrique selon la revendication 2 dans laquelle la tige de jonction (30) est rotative dans le manchon de montage (12) de la barre de fonctionnement (10) par rotation du bouton d'ajustage de l'unité d'ajustage par rapport à la portion d'extrémité de la poignée.
  14. Clé dynamométrique selon la revendication 1 dans laquelle
    la portion d'extrémité de la poignée a une forme en anneau,
    la paroi intérieure de la portion d'extrémité de la poignée a une première périphérie semi-circulaire pourvue de la première portion dentée et une seconde périphérie semi-circulaire pourvue des rainures de positionnement.
  15. Clé dynamométrique selon la revendication 14 dans laquelle les rainures de positionnement de la poignée sont espacées à égale distance les unes des autres.
  16. Clé dynamométrique selon la revendication 1 dans laquelle le bouton d'ajustage (41) de l'unité d'ajustage a une première extrémité étendue dans la portion d'extrémité de la poignée (20) et pourvue de la seconde portion dentée et du bloc de positionnement et une seconde extrémité élargie faisant saillie vers l'extérieur de la portion d'extrémité de la poignée et pourvue d'une pluralité de nombres indicateurs, chacun s'alignant avec une rainure respective des rainures de positionnement de la poignée lorsque le bloc de positionnement (415) du bouton d'ajustage (41) est inséré dans l'une des rainures de positionnement de la poignée.
  17. Clé dynamométrique selon la revendication 1 dans laquelle la portion d'extrémité de la poignée (20) fait saillie vers l'extérieur à partir du manchon de montage de la barre de fonctionnement.
  18. Clé dynamométrique selon la revendication 1 dans laquelle la paroi intérieure de la portion d'extrémité de la poignée (20) est pourvue d'une portion d'arrêt étagée en affleurement avec une face d'extrémité du manchon de montage (12) de la barre de fonctionnement (10) pour arrêter le bouton d'ajustage (41) de l'unité d'ajustage (40).
EP08158960A 2008-06-25 2008-06-25 Clé dynamométrique dont les valeurs de couple peuvent être réglées facilement et rapidement Active EP2138276B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08158960A EP2138276B1 (fr) 2008-06-25 2008-06-25 Clé dynamométrique dont les valeurs de couple peuvent être réglées facilement et rapidement
PL08158960T PL2138276T3 (pl) 2008-06-25 2008-06-25 Klucz dynamometryczny, w którym wartości momentu obrotowego można szybko i łatwo regulować
ES08158960T ES2402265T3 (es) 2008-06-25 2008-06-25 LLave dinamométrica cuyos valores de par de torsión pueden ajustarse libremente y de forma selectiva

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08158960A EP2138276B1 (fr) 2008-06-25 2008-06-25 Clé dynamométrique dont les valeurs de couple peuvent être réglées facilement et rapidement

Publications (2)

Publication Number Publication Date
EP2138276A1 EP2138276A1 (fr) 2009-12-30
EP2138276B1 true EP2138276B1 (fr) 2013-01-02

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EP08158960A Active EP2138276B1 (fr) 2008-06-25 2008-06-25 Clé dynamométrique dont les valeurs de couple peuvent être réglées facilement et rapidement

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EP (1) EP2138276B1 (fr)
ES (1) ES2402265T3 (fr)
PL (1) PL2138276T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012163374A1 (fr) * 2011-06-01 2012-12-06 Richard Abr. Herder Gmbh & Co. Kg Outil
TWM610757U (zh) * 2020-11-12 2021-04-21 英發企業股份有限公司 扭力扳手

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207783A (en) * 1978-04-14 1980-06-17 Consolidated Devices Inc. Torque wrench
US6945144B1 (en) * 2003-02-17 2005-09-20 Snap-On Incorporated Torque wrench with finite plurality of selectable torque values

Also Published As

Publication number Publication date
EP2138276A1 (fr) 2009-12-30
ES2402265T3 (es) 2013-04-30
PL2138276T3 (pl) 2013-05-31

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