EP2361726A1 - Ratchet wrench - Google Patents
Ratchet wrench Download PDFInfo
- Publication number
- EP2361726A1 EP2361726A1 EP10154311A EP10154311A EP2361726A1 EP 2361726 A1 EP2361726 A1 EP 2361726A1 EP 10154311 A EP10154311 A EP 10154311A EP 10154311 A EP10154311 A EP 10154311A EP 2361726 A1 EP2361726 A1 EP 2361726A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ratchet wheel
- ratchet
- control unit
- spring
- ratchet wrench
- 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.)
- Withdrawn
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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 generally relates to a ratchet wrench, and particularly to a ratchet wrench that contains simplified parts but is effectively in change of rotational direction.
- a conventional ratchet wrench designated at 1, is illustrated in FIG 1 of the attached drawings, and generally comprises a body 11, a ratchet wheel mounted inside an end of the body 11, a .detent block 13, and a switching member 14.
- the detent block 13 is engageable with the ratchet wheel 12, and the switching member 14 is in operative coupling with the detent block 13.
- An end 121 of the ratchet wheel 12 extends outside the end of the body 11 to rotatably couple to a control knob 16 through a retainer 15.
- the control knob 16 is in operative coupling with the switching member 14 for controlling the switching member 14 to rotate the detent block 13 so as to effect direction change of the rotation of the ratchet wrench 1.
- the above described construction of the conventional ratchet wrench 1 is effective in realizing direction change, but is comprised of numerous parts, which needs elaborate and complicated handling and machining, making the expense for manufacturing and assembling very high and thus lowering market competitivity
- the wrench since the wrench is composed numerous parts, the wrench becomes bulky and heavy, making the use thereof difficult and inconvenient.
- control knob 16 is rotatably coupled to an end 121 of the ratchet wheel 12, to prevent the control knob 16 from being undesired moved due to the rotation of the ratchet wheel 12, a sophisticated retention device 17 must be arranged to ensure proper positioning of the control knob 16, and further, the control knob 16 must be elaborately structured in order to maintain good rotatable coupling with the ratchet wheel 12. This certainly increases the manufacturing expense. Further, since the working environments for the ratchet wrench may be unorganized and dirty, often leading to dirt or contaminants entering and hiding in the coupling between the control knob 16 and the ratchet wheel 12. This may deteriorate the coupling engagement between the control knob 16 and the ratchet wheel 12 and leads to improper operation of direction change in the use of the wrench. In addition, the conventional ratchet wrench 1 is not equipped with means for reciprocation of the detent block 13 and teeth formed on the detent block 13 may easily get jammed with teeth of the ratchet wheel 12, leading to incapability of rotation in reversed direction.
- the present invention aims to provide a ratchet wrench featuring simplification of parts but still maintaining proper operability of change of rotational direction.
- the primary technical solution of the present invention is to provide a ratchet wrench, which comprises at least a body, a ratchet wheel, a control unit, and a rotary knob.
- the body has an end forming a ratchet wheel bore and a receiving hole, which respectively and rotatably receive the ratchet wheel and the rotary knob therein.
- a channel is defined in the body between the ratchet wheel bore and the receiving hole for receiving therein the control unit.
- the control unit includes two detent blocks and a spring. The detent blocks are biased by the spring to be alternately engageable with teeth formed in the ratchet wheel.
- the rotary knob retains a control bar and a positioning ball.
- the receiving hole has an inner circumferential wall in which two positioning notches are defined.
- the control bar is operated to selectively move the detent blocks to desired positions and the positioning ball is biased by a spring into selective engagement with a corresponding one of the positioning notches for proper positioning of the detent blocks.
- the detent blocks can be properly positioned and convenience of use can be realized.
- the secondary technical solution of the present invention is to provide a ratchet wrench, which comprises at least a body, a ratchet wheel, a control unit, and a rotary knob.
- the body has an end forming a ratchet wheel bore and a receiving hole, which respectively and rotatably receive the ratchet wheel and the rotary knob therein.
- the rotary knob forms rough knurled pattern by which an increased frictional force is provided for a user's operation of rotation and thus convenience of rotation of the rotary knob is realized.
- the present invention provides a ratchet wrench 2, which comprises at least a body 21, a ratchet wheel 22, a control unit 23, and a rotary knob 24.
- the body 21 has an end 211 forming a ratchet wheel bore 212 and a receiving hole 213, both extending therethrough. Bottom parts of the ratchet wheel bore 212 and the receiving hole 213 each form an expanded opening 2121, 2131.
- a channel 214 is defined in the body 21 between the ratchet wheel bore 212 and the receiving hole 213.
- the receiving hole 213 has a circumferential inner wall forming two positioning notches 2132.
- the ratchet wheel 22 is received in the ratchet wheel bore 212 of the body 21.
- the ratchet wheel 22 has an upper portion forming circumferentially teeth 221 and a lower portion forming a working end 222.
- the working end 222 comprises a steel ball 223 movably embedded therein.
- the ratchet wheel 22 forms, in a central portion thereof, a through hole 224 in which a push button 225 and a spring 226 are received.
- the ratchet wheel 22 is provided with a positioner ring 227 at the lower portion thereof and the positioner ring 227 is tightly fit into the expanded opening 2121 of the body 21 to position and retain the ratchet wheel 22 in the ratchet wheel bore 212.
- the control unit 23 comprises two detent blocks 231, 232 and a spring 233.
- Each detent block 231, 232 forms at one end thereof a toothed face 2311, 2321 engageable with the teeth 221 of the ratchet wheel 22.
- Each detent block 231, 232 forms a peg 2312, 2322 at an opposite end thereof.
- a receiving space 2313, 2323 is formed between the toothed face 2311, 2321 and the peg 2312, 2322 of each detent block 231, 232.
- the detent blocks 231, 232 are structured and arranged to mutually fit to and mate each other and the spring 233 is received in the receiving spaces 2313, 2323 and is thus set between the two detent blocks 231, 232.
- the spring 233 comprises a corrugated plate formed in a fan shape.
- the spring 233 provides an outward-directing resiliency due to the corrugated configuration thereof in order to maintain an outward expanded condition of the detent blocks 231, 232.
- the spring 233 comprises a flat section 2331 at a middle portion thereof and the flat section 2331 corresponds in position to the channel 214 formed in the end 211 of the body 21.
- the rotary knob 24 has an upper portion forming an expanded, diameter-increased head 241 having a circumferential surface that forms knurling 2411.
- a stem 242 extends downward below the head 241.
- the stem 242 forms two deep holes 2421, 2422.
- the deep hole 2421 receives therein a control bar 243, which is of such a length that is partially exposed outside the stem 242 after being fully inserted into the hole 2421.
- the hole 2422 receives therein a spring 244 and a positioning ball 245, which corresponds in position to the positioning notches 2132 of the body 21.
- the rotary knob 24 is provided with a positioner ring 246 at a lower portion thereof and the positioner ring 246 is tightly fit into the expanded opening 2131 of the body 21 in order to position and retain the rotary knob 24 in the receiving hole 213 of the body 21.
- the spring 244 and the positioning ball 245 of the rotary knob 24 are positioned into the deep hole 2422 of the stem 242.
- the stem 242 of the rotary knob 24 is then fit into the receiving hole 213 of the body 21.
- the control bar 243 is moved through the channel 214 to fit into the deep hole 2421 of the stem 242 of the rotary knob 24.
- the positioner ring 246 is tightly fit into the expanded opening 2131 of the receiving hole 213.
- the two detent blocks 231, 232 of the control unit 23 are fit to each other in a vertical direction and the spring 233 is set in the receiving spaces 2313, 2323 of the detent blocks 231, 232, which are then all put into the channel 214 of the body 21, whereby the control bar 243 is located between the pegs 2311 of the two detent blocks 231 and the flat section 2331 of the spring 233.
- the flat section 2331 of the spring 233 provides a space for accommodation of the control bar 243 in order to prevent interference between the control bar 243 and the corrugation of the spring 233.
- the push button 225 and the spring 226 are put into the through hole 224 of the ratchet wheel 22 and the ratchet wheel 22 is put into and retained in the ratchet wheel bore 212 of the body 21 by tightly fitting the positioner ring 227 into the expanded opening 2121 of the ratchet wheel bore 212. This completes the assembling of the ratchet wrench.
- the head 241 of the rotary knob 24 is rotated to make the control bar 243 driving the peg 2312 of the detent block 231 for inducing movement of the detent block 231, so that the toothed face 2311 is caused to disengage from the teeth 221 of the ratchet wheel 22.
- the spring 233 also applies a force to the other detent block 232 to make the toothed face 2321 of the detent block 232 engaging the teeth 221 of the ratchet wheel 22.
- the control bar 243 of the rotary knob 24 is properly set in position by the spring 244 biasing the positioning ball 245 into engagement with the corresponding positioning notch 2132, which also makes the rotary knob 24 properly set in position. Under this condition, the body 21 of the ratchet wrench 2 can make rotation in a first direction, such as clockwise direction.
- the rotary knob 24 is rotated to the opposite direction, making the control bar 243 driving the peg 2322 of the detent block 232 for inducing movement of the detent block 232, so that the toothed face 2321 disengages from the teeth 221 of the ratchet wheel 22.
- the spring 233 also applies a force, in an opposite manner, to the detent block 231 to make the toothed face 2311 of the detent block 231 engaging the teeth 221 of the ratchet wheel 22.
- the control bar 243 of the rotary knob 24 is properly set in position by the spring 244 biasing the positioning ball 245 into engagement with the corresponding positioning notch 2132, which also makes the rotary knob 24 properly set in position. Under this condition, the body 21 of the ratchet wrench 2 can make rotation in an opposite second direction, such as counterclockwise direction.
- the effectiveness of the present invention is that by providing a channel 214 between the ratchet wheel bore 212 and the receiving hole 213 for completely accommodating therein the control unit 23, contaminants and other dirt are prevented from entering and being hiding in the control unit 23 to resist the operation of the detent blocks 231, 232 and the ratchet wheel 22. Further, by providing the control bar 243 and the positioning ball 245 in the rotary knob 24 and forming two positioning notches 2132 in an inner circumferential wall of the receiving hole 213, after the detent blocks 231, 232 are moved by the control bar 243, the detent blocks 231, 232 can be properly set in position by the spring 244 biasing the positioning ball 245 into engagement with the corresponding positioning notch 2132, so as to realize convenience of operation and use. Further, the head 241 of the rotary knob 24 is provided on the circumferential surface thereof, with knurling 2411, which provides an effective frictional force when being rotated by a user so as to realize easy rotation of the rotary knob 24.
Abstract
A ratchet wrench includes a body, a ratchet wheel, a control unit, and a rotary knob. The body has an end forming a ratchet wheel bore and a receiving hole, which respectively and rotatably receive the ratchet wheel and the rotary knob therein. A channel is defined in the body between the ratchet wheel bore and the receiving hole for receiving therein the control unit. The control unit includes two detent blocks and a spring. The detent blocks are selectively engageable with teeth formed in the ratchet wheel. The rotary knob retains a control bar and a positioning ball. The receiving hole has an inner circumferential wall in which two positioning notches are defined. The control bar is operated to move the detent blocks to desired positions and the positioning ball is biased by a spring into selective engagement with the positioning notches for proper positioning of the detent blocks.
Description
- The present invention generally relates to a ratchet wrench, and particularly to a ratchet wrench that contains simplified parts but is effectively in change of rotational direction.
- A conventional ratchet wrench, designated at 1, is illustrated in
FIG 1 of the attached drawings, and generally comprises abody 11, a ratchet wheel mounted inside an end of thebody 11, a .detent block 13, and aswitching member 14. Thedetent block 13 is engageable with theratchet wheel 12, and the switchingmember 14 is in operative coupling with thedetent block 13. Anend 121 of theratchet wheel 12 extends outside the end of thebody 11 to rotatably couple to acontrol knob 16 through aretainer 15. Thecontrol knob 16 is in operative coupling with the switchingmember 14 for controlling the switchingmember 14 to rotate thedetent block 13 so as to effect direction change of the rotation of theratchet wrench 1. - The above described construction of the
conventional ratchet wrench 1 is effective in realizing direction change, but is comprised of numerous parts, which needs elaborate and complicated handling and machining, making the expense for manufacturing and assembling very high and thus lowering market competitivity In addition, since the wrench is composed numerous parts, the wrench becomes bulky and heavy, making the use thereof difficult and inconvenient. - Further, since the
control knob 16 is rotatably coupled to anend 121 of theratchet wheel 12, to prevent thecontrol knob 16 from being undesired moved due to the rotation of theratchet wheel 12, asophisticated retention device 17 must be arranged to ensure proper positioning of thecontrol knob 16, and further, thecontrol knob 16 must be elaborately structured in order to maintain good rotatable coupling with theratchet wheel 12. This certainly increases the manufacturing expense. Further, since the working environments for the ratchet wrench may be unorganized and dirty, often leading to dirt or contaminants entering and hiding in the coupling between thecontrol knob 16 and theratchet wheel 12. This may deteriorate the coupling engagement between thecontrol knob 16 and theratchet wheel 12 and leads to improper operation of direction change in the use of the wrench. In addition, theconventional ratchet wrench 1 is not equipped with means for reciprocation of thedetent block 13 and teeth formed on thedetent block 13 may easily get jammed with teeth of theratchet wheel 12, leading to incapability of rotation in reversed direction. - In view of the above drawbacks of the
conventional ratchet wrench 1, the present invention aims to provide a ratchet wrench featuring simplification of parts but still maintaining proper operability of change of rotational direction. - The primary technical solution of the present invention is to provide a ratchet wrench, which comprises at least a body, a ratchet wheel, a control unit, and a rotary knob. The body has an end forming a ratchet wheel bore and a receiving hole, which respectively and rotatably receive the ratchet wheel and the rotary knob therein. A channel is defined in the body between the ratchet wheel bore and the receiving hole for receiving therein the control unit. The control unit includes two detent blocks and a spring. The detent blocks are biased by the spring to be alternately engageable with teeth formed in the ratchet wheel. The rotary knob retains a control bar and a positioning ball. The receiving hole has an inner circumferential wall in which two positioning notches are defined. The control bar is operated to selectively move the detent blocks to desired positions and the positioning ball is biased by a spring into selective engagement with a corresponding one of the positioning notches for proper positioning of the detent blocks. As such, the detent blocks can be properly positioned and convenience of use can be realized.
- The secondary technical solution of the present invention is to provide a ratchet wrench, which comprises at least a body, a ratchet wheel, a control unit, and a rotary knob. The body has an end forming a ratchet wheel bore and a receiving hole, which respectively and rotatably receive the ratchet wheel and the rotary knob therein. The rotary knob forms rough knurled pattern by which an increased frictional force is provided for a user's operation of rotation and thus convenience of rotation of the rotary knob is realized.
- The foregoing objective and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
- Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
-
-
FIG 1 is an exploded view of a conventional ratchet wrench. -
FIG 2 is a perspective view of a ratchet wrench in accordance with the present invention. -
FIG 3 is an exploded view of the ratchet wrench in accordance with the present invention. -
FIG 4 is a cross-sectional view of the ratchet wrench in accordance with the present invention. -
FIGS. 5 and6 schematically illustrate direction change operation of the ratchet wrench in accordance with the present invention. - The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
- The present invention will now be explained with reference to the drawings.
- Initial reference is made to
FIGS. 2 and3 . The present invention provides aratchet wrench 2, which comprises at least abody 21, aratchet wheel 22, acontrol unit 23, and arotary knob 24. - The
body 21 has anend 211 forming aratchet wheel bore 212 and areceiving hole 213, both extending therethrough. Bottom parts of the ratchet wheel bore 212 and thereceiving hole 213 each form an expanded opening 2121, 2131. Achannel 214 is defined in thebody 21 between theratchet wheel bore 212 and thereceiving hole 213. Thereceiving hole 213 has a circumferential inner wall forming twopositioning notches 2132. - The
ratchet wheel 22 is received in theratchet wheel bore 212 of thebody 21. Theratchet wheel 22 has an upper portion forming circumferentiallyteeth 221 and a lower portion forming a workingend 222. The workingend 222 comprises asteel ball 223 movably embedded therein. Theratchet wheel 22 forms, in a central portion thereof, a throughhole 224 in which apush button 225 and aspring 226 are received. Theratchet wheel 22 is provided with apositioner ring 227 at the lower portion thereof and thepositioner ring 227 is tightly fit into the expanded opening 2121 of thebody 21 to position and retain theratchet wheel 22 in theratchet wheel bore 212. - The
control unit 23 comprises twodetent blocks spring 233. Eachdetent block toothed face teeth 221 of theratchet wheel 22. Eachdetent block peg receiving space toothed face peg detent block detent blocks spring 233 is received in thereceiving spaces detent blocks spring 233 comprises a corrugated plate formed in a fan shape. Thespring 233 provides an outward-directing resiliency due to the corrugated configuration thereof in order to maintain an outward expanded condition of thedetent blocks spring 233 comprises aflat section 2331 at a middle portion thereof and theflat section 2331 corresponds in position to thechannel 214 formed in theend 211 of thebody 21. - The
rotary knob 24 has an upper portion forming an expanded, diameter-increasedhead 241 having a circumferential surface that forms knurling 2411. Astem 242 extends downward below thehead 241. Thestem 242 forms twodeep holes deep hole 2421 receives therein acontrol bar 243, which is of such a length that is partially exposed outside thestem 242 after being fully inserted into thehole 2421. Thehole 2422 receives therein aspring 244 and apositioning ball 245, which corresponds in position to thepositioning notches 2132 of thebody 21. Therotary knob 24 is provided with apositioner ring 246 at a lower portion thereof and thepositioner ring 246 is tightly fit into the expandedopening 2131 of thebody 21 in order to position and retain therotary knob 24 in the receivinghole 213 of thebody 21. - Referring to
FIG 4 , to practice the present invention, thespring 244 and thepositioning ball 245 of therotary knob 24 are positioned into thedeep hole 2422 of thestem 242. Thestem 242 of therotary knob 24 is then fit into the receivinghole 213 of thebody 21. Thecontrol bar 243 is moved through thechannel 214 to fit into thedeep hole 2421 of thestem 242 of therotary knob 24. Thereafter, thepositioner ring 246 is tightly fit into the expandedopening 2131 of the receivinghole 213. Afterwards, the twodetent blocks control unit 23 are fit to each other in a vertical direction and thespring 233 is set in the receivingspaces channel 214 of thebody 21, whereby thecontrol bar 243 is located between thepegs 2311 of the twodetent blocks 231 and theflat section 2331 of thespring 233. Theflat section 2331 of thespring 233 provides a space for accommodation of thecontrol bar 243 in order to prevent interference between thecontrol bar 243 and the corrugation of thespring 233. Finally, thepush button 225 and thespring 226 are put into the throughhole 224 of theratchet wheel 22 and theratchet wheel 22 is put into and retained in the ratchet wheel bore 212 of thebody 21 by tightly fitting thepositioner ring 227 into the expandedopening 2121 of theratchet wheel bore 212. This completes the assembling of the ratchet wrench. - Referring to
FIG 5 , to operate the present invention, thehead 241 of therotary knob 24 is rotated to make thecontrol bar 243 driving thepeg 2312 of thedetent block 231 for inducing movement of thedetent block 231, so that thetoothed face 2311 is caused to disengage from theteeth 221 of theratchet wheel 22. In addition, thespring 233 also applies a force to the other detent block 232 to make thetoothed face 2321 of thedetent block 232 engaging theteeth 221 of theratchet wheel 22. Thecontrol bar 243 of therotary knob 24 is properly set in position by thespring 244 biasing thepositioning ball 245 into engagement with thecorresponding positioning notch 2132, which also makes therotary knob 24 properly set in position. Under this condition, thebody 21 of theratchet wrench 2 can make rotation in a first direction, such as clockwise direction. - On the other hand, as shown in
FIG 6 , to change the direction of rotation of theratchet wheel 22, therotary knob 24 is rotated to the opposite direction, making thecontrol bar 243 driving thepeg 2322 of thedetent block 232 for inducing movement of thedetent block 232, so that thetoothed face 2321 disengages from theteeth 221 of theratchet wheel 22. Thespring 233 also applies a force, in an opposite manner, to thedetent block 231 to make thetoothed face 2311 of thedetent block 231 engaging theteeth 221 of theratchet wheel 22. Thecontrol bar 243 of therotary knob 24 is properly set in position by thespring 244 biasing thepositioning ball 245 into engagement with thecorresponding positioning notch 2132, which also makes therotary knob 24 properly set in position. Under this condition, thebody 21 of theratchet wrench 2 can make rotation in an opposite second direction, such as counterclockwise direction. - The effectiveness of the present invention is that by providing a
channel 214 between theratchet wheel bore 212 and the receivinghole 213 for completely accommodating therein thecontrol unit 23, contaminants and other dirt are prevented from entering and being hiding in thecontrol unit 23 to resist the operation of the detent blocks 231, 232 and theratchet wheel 22. Further, by providing thecontrol bar 243 and thepositioning ball 245 in therotary knob 24 and forming twopositioning notches 2132 in an inner circumferential wall of the receivinghole 213, after the detent blocks 231, 232 are moved by thecontrol bar 243, the detent blocks 231, 232 can be properly set in position by thespring 244 biasing thepositioning ball 245 into engagement with thecorresponding positioning notch 2132, so as to realize convenience of operation and use. Further, thehead 241 of therotary knob 24 is provided on the circumferential surface thereof, withknurling 2411, which provides an effective frictional force when being rotated by a user so as to realize easy rotation of therotary knob 24. - While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
Claims (9)
- A ratchet wrench, at least comprising:a body, which has an end forming a ratchet wheel bore and a
receiving hole, which respectively and rotatably receive a ratchet wheel and a rotary knob therein, a channel being defined in the body between the ratchet wheel bore and the receiving hole for receiving therein a control unit;a ratchet wheel, which is received in the ratchet wheel bore and has
an upper portion forming circumferentially teeth and a lower portion forming a working end;a control unit, which comprises two detent blocks and a spring, the
detent blocks being arranged to mutually fit to each other with the spring set between the two detent blocks, each detent block forming a toothed face engageable with the teeth of the ratchet wheel; anda rotary knob, which comprises an expanded head and a stem, the
stem retaining a control bar and a positioning ball, the control bar being located between the two detent blocks of the control unit, the positioning ball being removably and selectively fit into positioning notches defined in the body. - The ratchet wrench according to claim 1, wherein the working end of the ratchet wheel comprises a steel ball movably embedded therein.
- The ratchet wrench according to claim 1, wherein the ratchet wheel forms a central through hole in which a push button and a spring are received.
- The ratchet wrench according to claim 1, wherein the ratchet wheel is retained by a positioner at a lower end thereof.
- The ratchet wrench according to claim 1, wherein each detent block of the control unit forms a peg at an end thereof.
- The ratchet wrench according to claim 1, wherein the spring of the control unit comprises a corrugated plate set in a fan shape.
- The ratchet wrench according to claim 1, wherein the spring of the control unit comprises a flat section.
- The ratchet wrench according to claim 1, wherein each detent block of the control unit forms a peg.
- The ratchet wrench according to claim 1, wherein the expanded head of the rotary knob comprises knurling.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10154311A EP2361726A1 (en) | 2010-02-23 | 2010-02-23 | Ratchet wrench |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10154311A EP2361726A1 (en) | 2010-02-23 | 2010-02-23 | Ratchet wrench |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2361726A1 true EP2361726A1 (en) | 2011-08-31 |
Family
ID=42199733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10154311A Withdrawn EP2361726A1 (en) | 2010-02-23 | 2010-02-23 | Ratchet wrench |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2361726A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103286716A (en) * | 2012-03-02 | 2013-09-11 | 香港商艾沛克斯工具有限公司台湾分公司 | Ratchet wrench and main body using same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20200092U1 (en) * | 2001-12-17 | 2002-04-11 | Chang Sung Hsiao | Locking element of wrench |
DE20210733U1 (en) * | 2002-07-16 | 2002-11-14 | Hsien Chih Ching | Ratchet wrench with switch mechanism |
DE20310481U1 (en) * | 2003-07-08 | 2003-09-11 | Lee Daniel | Socket ratchet wrench adapter has link fitting with one end engaged with wrench insert and other with ratchet locknut |
US20050257650A1 (en) * | 2004-05-19 | 2005-11-24 | Bobby Hu | Compact wrench with three-stage control |
DE202006009466U1 (en) * | 2005-11-09 | 2006-11-16 | Lee, Chang Chuan, Caotun | Ratchet wrench, comprises curved sliding element and toothed locking element in order to move in one direction only |
US20090314139A1 (en) * | 2008-06-24 | 2009-12-24 | Bobby Hu | Ratchet Wrench with Switch Moving in Transverse Direction |
-
2010
- 2010-02-23 EP EP10154311A patent/EP2361726A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20200092U1 (en) * | 2001-12-17 | 2002-04-11 | Chang Sung Hsiao | Locking element of wrench |
DE20210733U1 (en) * | 2002-07-16 | 2002-11-14 | Hsien Chih Ching | Ratchet wrench with switch mechanism |
DE20310481U1 (en) * | 2003-07-08 | 2003-09-11 | Lee Daniel | Socket ratchet wrench adapter has link fitting with one end engaged with wrench insert and other with ratchet locknut |
US20050257650A1 (en) * | 2004-05-19 | 2005-11-24 | Bobby Hu | Compact wrench with three-stage control |
DE202006009466U1 (en) * | 2005-11-09 | 2006-11-16 | Lee, Chang Chuan, Caotun | Ratchet wrench, comprises curved sliding element and toothed locking element in order to move in one direction only |
US20090314139A1 (en) * | 2008-06-24 | 2009-12-24 | Bobby Hu | Ratchet Wrench with Switch Moving in Transverse Direction |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103286716A (en) * | 2012-03-02 | 2013-09-11 | 香港商艾沛克斯工具有限公司台湾分公司 | Ratchet wrench and main body using same |
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