EP2138276B1 - Torque wrench whose torque values can be adjusted easily and quickly - Google Patents
Torque wrench whose torque values can be adjusted easily and quickly Download PDFInfo
- 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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- EP
- European Patent Office
- Prior art keywords
- adjusting knob
- handle
- torque wrench
- accordance
- adjusting unit
- 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.)
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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.
Description
- 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. However, 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.
- Examples for torques wrenches as per the preamble of claim 1 are disclosed in
US 6,945,144 B1 andUS 4,207,783 A . - 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.
- In accordance with the present invention, there is provided a torque wrench having the features of claim 1.
- Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
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Fig. 1 is a perspective view of a torque wrench in accordance with the preferred embodiment of the present invention; -
Fig. 2 is an exploded perspective view of the torque wrench as shown inFig. 1 ; -
Fig. 3 is a front plan cross-sectional view of the torque wrench as shown inFig. 1 ; -
Fig. 4 is a side plan view of a handle of the torque wrench as shown inFig. 2 ; -
Fig. 5 is a top plan view of the torque wrench as shown inFig. 1 ; -
Fig. 6 is a schematic operational view of the torque wrench as shown inFig. 3 in use; -
Fig. 7 is a schematic operational view of the torque wrench as shown inFig. 5 in use; and -
Fig. 8 is a schematic operational view of the torque wrench as shown inFig. 7 in use. - Referring to the drawings and initially to
Figs. 1-5 , a torque wrench in accordance with the preferred embodiment of the present invention comprises anoperation bar 10 having a first end provided with amounting sleeve 12 and a second end provided with adrive portion 11, ahollow handle 20 mounted on themounting sleeve 12 of theoperation bar 10 and having anend portion 22 having an inner wall provided with a firsttoothed portion 221 and a plurality ofpositioning grooves unit 40 mounted on thehandle 20 and including an adjustingknob 41 movable relative to theend portion 22 of thehandle 20 and having an outer wall provided with asecond toothed portion 414 detachably engaged with the firsttoothed portion 221 of thehandle 20 and apositioning block 415 detachably locked in one of thepositioning grooves handle 20 to releasably lock the adjustingknob 41 of the adjustingunit 40 onto theend portion 22 of thehandle 20, and a linkingrod 30 mounted in themounting sleeve 12 of theoperation bar 10 and attached to the adjustingknob 41 of the adjustingunit 40 to limit the adjustingknob 41 of the adjustingunit 40 on themounting sleeve 12 of theoperation bar 10. - The torque wrench further comprises a first bushing 13 mounted in the
mounting sleeve 12 of theoperation bar 10 and asecond bushing 14 mounted in themounting sleeve 12 of theoperation bar 10, and themounting sleeve 12 of theoperation bar 10 has an inside defining alimit space 15 between thefirst bushing 13 and thesecond bushing 14. - The
handle 20 has an outer wall provided with an elongate serratedanti-slip portion 21 to facilitate a user holding thehandle 20. Theend portion 22 of thehandle 20 protrudes outwardly from themounting sleeve 12 of theoperation bar 10, and the inner wall of theend portion 22 of thehandle 20 is provided with astepped stop portion 225 flush with anend face 16 of themounting sleeve 12 of theoperation bar 10 to stop the adjustingknob 41 of the adjustingunit 40. Theend portion 22 of thehandle 20 has a ring shape, and the inner wall of theend portion 22 of thehandle 20 has a first semi-circular periphery provided with the firsttoothed portion 221 and a second semi-circular periphery provided with thepositioning grooves positioning grooves handle 20 are equally spaced from each other. - The adjusting
knob 41 of the adjustingunit 40 is movably mounted on the linkingrod 30 and is movable axially relative to themounting sleeve 12 of theoperation bar 10 and the linkingrod 30 to a position where thesecond toothed portion 414 of the adjustingknob 41 is detached from the firsttoothed portion 221 of thehandle 20 and thepositioning block 415 of the adjustingknob 41 is detached from one of thepositioning grooves handle 20 to unlock the adjustingknob 41 of the adjustingunit 40 from theend portion 22 of thehandle 20 so that the adjustingknob 41 of the adjustingunit 40 is rotatable relative to theend portion 22 of thehandle 20. The adjustingknob 41 of the adjustingunit 40 has a first end extended into theend portion 22 of thehandle 20 and provided with thesecond toothed portion 414 and thepositioning block 415 and an enlarged second end protruding outwardly from theend portion 22 of thehandle 20 and provided with a plurality of indicatingnumbers 416 each aligning with a respective one of thepositioning grooves handle 20 when thepositioning block 415 of the adjustingknob 41 is inserted into one of thepositioning grooves handle 20. The adjustingknob 41 of the adjustingunit 40 has an inner wall having a first end provided with athrough hole 411 movable on the linkingrod 30 and a second end provided with a receivingchamber 417 connected to the throughhole 411. Thereceiving chamber 417 of the adjustingknob 41 has a diameter greater than that of the throughhole 411, and the inner wall of the adjustingknob 41 has a mediate portion provided with a steppedlimit portion 412 located between thereceiving chamber 417 and the throughhole 411. Thethrough hole 411 of the adjustingknob 41 has a periphery provided with a firstserrated portion 413. - The adjusting
unit 40 further includes a threaded retainingmember 44 screwed onto the linkingrod 30, anelastic member 42 mounted on the linkingrod 30 and biased between the threaded retainingmember 44 and the adjustingknob 41 to push the adjustingknob 41 toward themounting sleeve 12 of theoperation bar 10 and theend portion 22 of thehandle 20, awasher 43 mounted on the linkingrod 30 and located between the threaded retainingmember 44 and theelastic member 42, and anend cap 45 mounted on the adjustingknob 41 to cover the threaded retainingmember 44, thewasher 43, theelastic member 42 and the linkingrod 30. The threaded retainingmember 44, thewasher 43 and theelastic member 42 of the adjustingunit 40 are received in thereceiving chamber 417 of the adjustingknob 41, and theend cap 45 of the adjustingunit 40 is mounted on an end portion of thereceiving chamber 417 of the adjustingknob 41 to close thereceiving chamber 417 of the adjustingknob 41. Theelastic member 42 of the adjustingunit 40 is biased between thewasher 43 and thelimit portion 412 of the adjustingknob 41. - The linking
rod 30 is rotatable in themounting sleeve 12 of theoperation bar 10 by rotation of the adjustingknob 41 of the adjustingunit 40 relative to theend portion 22 of thehandle 20. The linkingrod 30 has afirst end 31 extending through thefirst bushing 13 and the throughhole 411 of the adjustingknob 41 into thereceiving chamber 417 of the adjustingknob 41 for mounting theelastic member 42 and thewasher 43 of the adjustingunit 40, asecond end 32 extending through thesecond bushing 14, and a mediate portion located between thefirst end 31 and thesecond end 32 and provided with an enlargedlimit block 33 limited in thelimit space 15 of themounting sleeve 12 between thefirst bushing 13 and thesecond bushing 14. Thefirst end 31 of the linkingrod 30 has a peripheral wall provided with a second serratedportion 34 engaged with the firstserrated portion 413 of the adjustingknob 41 and has an end face provided with ascrew bore 35 into which the threaded retainingmember 44 is screwed. - In operation, referring to
Figs. 5-8 with reference toFigs. 1-4 , when the secondtoothed portion 414 of the adjustingknob 41 is engaged with the firsttoothed portion 221 of thehandle 20, and thepositioning block 415 of the adjustingknob 41 is locked in a first one of thepositioning grooves handle 20, the adjustingknob 41 of the adjustingunit 40 is locked onto theend portion 22 of thehandle 20. At this time, a first one of the indicatingnumbers 416 is shown to indicate a first torque value of the torque wrench, such as 85 pounds, as shown inFig. 5 . - Alternatively, when the adjusting
knob 41 of the adjustingunit 40 is movable outwardly relative to themounting sleeve 12 of theoperation bar 10 and the linkingrod 30 from the position as shown inFig. 3 to the position as shown inFig. 6 , the secondtoothed portion 414 of the adjustingknob 41 is detached from the firsttoothed portion 221 of thehandle 20 and thepositioning block 415 of the adjustingknob 41 is detached from the first one of thepositioning grooves handle 20 to unlock the adjustingknob 41 of the adjustingunit 40 from theend portion 22 of thehandle 20, so that the adjustingknob 41 of the adjustingunit 40 is rotatable relative to theend portion 22 of thehandle 20. - In such a manner, when the
positioning block 415 of the adjustingknob 41 is moved to align with a second one of thepositioning grooves handle 20, the adjustingknob 41 of the adjustingunit 40 is pushed by the restoring force of theelastic member 42 to move toward themounting sleeve 12 of theoperation bar 10 and the linkingrod 30 from the position as shown inFig. 6 to the position as shown inFig. 3 , so that the secondtoothed portion 414 of the adjustingknob 41 is engaged with the firsttoothed portion 221 of thehandle 20 again, and thepositioning block 415 of the adjustingknob 41 is locked in the second one of thepositioning grooves handle 20. At this time, a second one of the indicatingnumbers 416 is shown to indicate a second torque value of the torque wrench, such as 103 pounds, as shown inFig. 7 . - Alternatively, when the adjusting
knob 41 of the adjustingunit 40 is movable outwardly relative to themounting sleeve 12 of theoperation bar 10 and the linkingrod 30 from the position as shown inFig. 3 to the position as shown inFig. 6 , the secondtoothed portion 414 of the adjustingknob 41 is detached from the firsttoothed portion 221 of thehandle 20 and thepositioning block 415 of the adjustingknob 41 is detached from the second one of thepositioning grooves handle 20 to unlock the adjustingknob 41 of the adjustingunit 40 from theend portion 22 of thehandle 20, so that the adjustingknob 41 of the adjustingunit 40 is rotatable relative to theend portion 22 of thehandle 20. - In such a manner, when the
positioning block 415 of the adjustingknob 41 is moved to align with a third one of thepositioning grooves handle 20, the adjustingknob 41 of the adjustingunit 40 is pushed by the restoring force of theelastic member 42 to move toward themounting sleeve 12 of theoperation bar 10 and the linkingrod 30 from the position as shown inFig. 6 to the position as shown inFig. 3 , so that the secondtoothed portion 414 of the adjustingknob 41 is engaged with the firsttoothed portion 221 of thehandle 20 again, and thepositioning block 415 of the adjustingknob 41 is locked in the third one of thepositioning grooves handle 20. At this time, a third one of the indicatingnumbers 416 is shown to indicate a second torque value of the torque wrench, such as 108 pounds, as shown inFig. 8 . - Accordingly, the adjusting
knob 41 of the adjustingunit 40 is initially pulled outwardly relative to themounting sleeve 12 of theoperation bar 10 and the linkingrod 30 and is then rotatable relative to theend portion 22 of thehandle 20 so as to adjust the torque values of the torque wrench. In addition, a user only needs to pull and rotate the adjustingknob 41 of the adjustingunit 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. Further, the adjustingknob 41 of the adjustingunit 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. - Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the claims.
Claims (18)
- A torque wrench, comprising:an operation bar (10) having a first end provided with a mounting sleeve (12) and a second end provided with a drive portion (11);a hollow handle (20) mounted on the mounting sleeve of the operation bar and having an end portion having an sinner wall provided with a plurality of positioning grooves (222, 223, 224);an adjusting unit (40) mounted on the handle and including an adjusting knob (41) movable relative to the end portion of the handle and having a positioning block (415) detachably locked in one of the positioning grooves of the handle to releasably lock the adjusting knob of the adjusting unit onto the end portion of the handle,characterized in that the inner wall of the end portion of the hollow handle is provided with a first toothed portion and an outer wall of the adjusting knob is provided with a second toothed portion detachably engaged with the first toothed portion of the handle.
- The torque wrench in accordance with claim 1, further comprising:a linking rod (30) mounted in the mounting sleeve of the operation bar and attached to the adjusting knob (41) of the adjusting unit to limit the adjusting knob (41) of the adjusting unit on the mounting sleeve of the operation bar.
- The torque wrench in accordance with claim 2, wherein the adjusting knob (41) of the adjusting unit is movably mounted on the linking rod and is movable axially relative to the amounting sleeve of the operation bar (10) and the linking rod (30) to a position where the second toothed portion of the adjusting knob is detached from the first toothed portion of the handle and the positioning block (415) of the adjusting knob is detached from one of the positioning grooves of the handle to unlock the adjusting knob of the adjusting unit from the end portion of the handle so that the adjusting knob of the adjusting unit is rotatable relative to the end portion of the handle.
- The torque wrench in accordance with claim 2, wherein the adjusting unit (40) further includes:a threaded retaining member screwed onto the linking rod (30);an elastic member mounted on the linking rod (30) and biased between the threaded retaining member and the adjusting knob to push the adjusting knob toward the mounting sleeve of the operation bar and the send portion of the handle.
- The torque wrench tin accordance with claim 4, wherein the adjusting unit (40) further includes:a washer mounted on the linking rod and located between the threaded retaining member and the elastic member;an end cap mounted on the adjusting knob to cover the threaded retaining member, the washer, the elastic member and the linking rod (30).
- The torque wrench in accordance with claim 5, wherein
the adjusting knob (41) of the adjusting unit has an inner wall having a first end provided with a through hole movable on the linking rod (30) and a second end provided with a receiving chamber connected to the through hole;
the threaded retaining member, the washer and the elastic member of the adjusting unit are received in the receiving chamber of the adjusting knob;
the end cap of the adjusting unit is mounted on an end portion of the receiving chamber of the adjusting knob to close the receiving chamber of the adjusting knob (41). - The torque wrench in accordance with claim 6, wherein
the inner wall of the adjusting knob (41) has a mediate portion provided with a stepped limit portion located between the receiving chamber and the through hole;
the elastic member (42) of the adjusting unit is biased between the washer and the limit portion of the adjusting knob. - The torque wrench in accordance with claim 6, wherein
the torque wrench further comprises a first bushing mounted in the mounting sleeve (12) of the operation bar (10) and a second bushing mounted in the mounting sleeve of the operation bar;
the linking rod (30) has a first end extending through the first bushing and the through hole of the adjusting knob into the receiving chamber of the adjusting knob for mounting the elastic member and the washer of the adjusting unit and a second end extending through the second bushing. - The torque wrench in accordance with claim 8, wherein
the through hole of the adjusting knob (41) has a periphery provided with a first serrated portion;
the first end of the linking rod has a peripheral wall provided with a second serrated portion engaged with the first serrated portion of the adjusting knob. - The torque wrench in accordance with claim 8, wherein the first end of the linking rod (30) has an end face provided with a screw bore into which the threaded retaining member is screwed.
- The torque wrench in accordance with claim 8, wherein
the mounting sleeve (12) of the operation bar (10) has an inside defining a limit space between the first bushing and the second bushing;
the linking rod has a mediate portion located between the first end and the second end and provided with an enlarged limit block limited in the limit space of the mounting sleeve between the first bushing and the second bushing. - The torque wrench in accordance with claim 6, wherein the receiving chamber of the adjusting knob (41) has a diameter greater than that of the through hole.
- The torque wrench in accordance with claim 2, wherein the linking rod (30) is rotatable in the mounting sleeve (12) of the operation bar (10) by rotation of the adjusting knob of the adjusting unit relative to the end portion of the handle.
- The torque wrench in accordance with claim 1, wherein
the end portion of the handle has a ring shape;
the inner wall of the end portion of the handle has a first semi-circular periphery provided with the first toothed portion and a second semi-circular periphery provided with the positioning grooves. - The torque wrench in accordance with claim 14, wherein the positioning grooves of the handle are equally spaced from each other.
- The torque wrench in accordance with claim 1, wherein the adjusting knob (41) of the adjusting unit has a first end extended into the end portion of the handle (20) and provided with the second toothed portion and the positioning block and an enlarged second end protruding outwardly from the end portion of the handle and provided with a plurality of indicating numbers each aligning with a respective one of the positioning grooves of the handle when the positioning block (415) of the adjusting knob (41) is inserted into one of the positioning grooves of the handle.
- The torque wrench in accordance with claim 1, wherein the end portion of the handle (20) protrudes outwardly from the mounting sleeve of the operation bar.
- The torque wrench in accordance with claim 1, wherein the inner wall of the end portion of the handle (20) is provided with a stepped stop portion flush with an end face of the mounting sleeve (12) of the operation bar (10) to stop the adjusting knob (41) of the adjusting unit (40).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08158960T PL2138276T3 (en) | 2008-06-25 | 2008-06-25 | Torque wrench whose torque values can be adjusted easily and quickly |
ES08158960T ES2402265T3 (en) | 2008-06-25 | 2008-06-25 | Torque wrench whose torque values can be adjusted freely and selectively |
EP08158960A EP2138276B1 (en) | 2008-06-25 | 2008-06-25 | Torque wrench whose torque values can be adjusted easily and quickly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08158960A EP2138276B1 (en) | 2008-06-25 | 2008-06-25 | Torque wrench whose torque values can be adjusted easily and quickly |
Publications (2)
Publication Number | Publication Date |
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EP2138276A1 EP2138276A1 (en) | 2009-12-30 |
EP2138276B1 true EP2138276B1 (en) | 2013-01-02 |
Family
ID=41258138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP08158960A Active EP2138276B1 (en) | 2008-06-25 | 2008-06-25 | Torque wrench whose torque values can be adjusted easily and quickly |
Country Status (3)
Country | Link |
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EP (1) | EP2138276B1 (en) |
ES (1) | ES2402265T3 (en) |
PL (1) | PL2138276T3 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2012163374A1 (en) * | 2011-06-01 | 2012-12-06 | Richard Abr. Herder Gmbh & Co. Kg | Tool |
TWM610757U (en) * | 2020-11-12 | 2021-04-21 | 英發企業股份有限公司 | Torque wrench |
Family Cites Families (2)
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 |
-
2008
- 2008-06-25 PL PL08158960T patent/PL2138276T3/en unknown
- 2008-06-25 ES ES08158960T patent/ES2402265T3/en active Active
- 2008-06-25 EP EP08158960A patent/EP2138276B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ES2402265T3 (en) | 2013-04-30 |
PL2138276T3 (en) | 2013-05-31 |
EP2138276A1 (en) | 2009-12-30 |
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