EP2216138B1 - Ratchet connector - Google Patents
Ratchet connector Download PDFInfo
- Publication number
- EP2216138B1 EP2216138B1 EP20090001532 EP09001532A EP2216138B1 EP 2216138 B1 EP2216138 B1 EP 2216138B1 EP 20090001532 EP20090001532 EP 20090001532 EP 09001532 A EP09001532 A EP 09001532A EP 2216138 B1 EP2216138 B1 EP 2216138B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- driving
- ratchet
- driving section
- tooth block
- 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.)
- Not-in-force
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Classifications
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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
- 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
- B25B13/465—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 internally toothed ring
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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
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
-
- 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
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
Definitions
- the invention relates to a ratchet connector and, in particular, to a ratchet connector with large torque and easy to change its orientation.
- FIG. 11 shows a conventional ratchet connector.
- the hexagonal base 72 of a supporter 71 is inserted in the mounting hole of a box end wrench.
- the O-ring 73 of the hexagonal base 72 urges against the inner wall of the mounting hole in a resilient way.
- the supporter 71 is positioned at the box end wrench.
- the change orientation switch 74 flipping the change orientation switch 74 on the side edge of the supporter 71 can change the screw driving direction to clockwise or counterclockwise.
- the change orientation switch 74 is located on one side edge of the supporter 71. Therefore, the user can only operate in a single direction. It is thus very inconvenient.
- the change orientation switch 74 is often mis-triggered in practice. This is the most serious problem of the ratchet connector.
- FIGS. 12 and 13 show another conventional ratchet connector. It uses a switch ring 81 to change the screw driving direction. This solves the problem of operating the change orientation switch 74 in a single direction in FIG. 11 .
- a first latch 82 and a third latch 83 are limited in an accommodating groove 84 by the switch ring 81.
- a second latch 85 and a fourth latch 86 go into a latch groove 87, respectively.
- a ratchet 88 is only allowed to rotate in one direction. To rotate the ratchet 88 in the opposite direction, one rotates the switch ring 81 so that the second latch 85 and the fourth latch 86 are retracted by the switch ring 81 into the accommodating groove 84.
- the first latch 82 and the third latch 83 go into the corresponding latch grooves 87.
- the switch ring 81 improves the drawback of triggering by mistake, the control is not accurate.
- the switch ring 81 When the user rotates the switch ring 81 to change the rotating direction of the ratchet 88, it is often not smooth because the structures of the latches 82, 83, 85, 86 are not perfect. This is the problem of this design. Due to the consideration of torque, this design requires at least four latches. This makes the manufacturing process complicated and expensive.
- FIG. 14 shows a third conventional ratchet connector.
- a knob 91 is screwed onto a driving section 92 to solve the problem that the box end wrench 93 may easily fall off the driving section 92.
- the user has to first release the knob 91, dispose the box end wrench 93, and then tighten the knob 91 to position the box end wrench 93.
- the knob 91 is convenient for operations and thus needs to improve.
- An objective of the invention is to provide a ratchet connector according to claim 1 that uses a control ring to rotate and change the driving direction.
- An elastic element in the control ring urges against the guiding surface of a tooth block.
- the tooth block can move smoothly. Therefore, the user can readily change the driving direction.
- Another objective of the inventionas disclosed in claim 1 is to use the restriction of a single tooth block by the protruding part of an open groove to increase the stopping force thereof.
- the invention can simplify the manufacturing process and reduce the material cost.
- a further objective of the invention is to provide a ratchet connector according to claim 3 with a quick positioning hand tool.
- a positioning element or knob is disposed at the driving end of the ratchet connector to quickly and firmly position the box end wrench or open wrench.
- FIGS. 1 to 5 show a first embodiment of the disclosed ratchet connector, which includes a driving element 1, a control ring 2, and a working element 3.
- the driving element 1 has a driving section 11 and an extending section 12.
- the driving section 11 is for a hand tool to connect and drive.
- the extending section 12 has an open groove 121 along its radial direction. Both sides of the open groove 121 have a sidewall 122, respectively. Each of the sidewalls 122 has a protruding part 123.
- Inside the open groove 121 is disposed with a tooth block 13. Both ends of the tooth block 13 have a concave part 131, respectively.
- the concave parts 131 of the tooth block 13 correspond to the protruding parts 123 of the sidewalls 122, respectively.
- the end surface of the tooth block 13 opposite to the open groove 121 has a guiding surface 132 and an arc surface 133. Both sides of the arc surface 133 have several teeth 134, respectively.
- the guiding surface 132 is also an arc surface.
- the driving section 11 of the driving element 1 is a hexagonal pillar.
- the driving section 11 can thus be combined with a box end wrench 4 or an open wrench.
- the end of the driving section 11 far from the extending section 12 has a radial groove 111 that is disposed with a positioning element 14.
- the positioning element 14 has a body 141, a positioning part 142, a stopping part 143, and a holding part 144.
- the stopping part 143 protrudes from the outer edge of the driving section 11.
- the positioning part 142 extends from the body 141 and close to the bottom of the stopping part 143 along the axial direction. It is disposed outside the end portion of the driving section 1 l.
- the positioning part 142 has the holding part 144.
- the holding part 144 is parallel to the body 141.
- the bottom of the positioning element 14 is disposed with a spring 145 to urge against the bottom of the body 141 of the positioning element 14.
- the holding part 144 depresses the spring 145 at the bottom of the positioning element 14.
- the stopping part 143 is disposed in the radial groove 111. Once the holding part 144 is released, the positioning element 14 is pushed by the spring 145 so that the stopping part 143 protrudes from the outer edge of the driving section 11. Using this method, the positioning element 14 positions one side of the box end wrench 4 or open wrench on the driving section 11.
- a protruding edge 15 is interposed between the driving section 11 and the extending section 12.
- the protruding edge 15 extends outwards from the peripheral of the driving element 1.
- the protruding edge 15 can stop the box end wrench 4 or open wrench far from one side of the positioning element 14.
- the control ring 2 is mounted on the end of the extending section 12 close to the driving section 11 in the driving element 1.
- the control ring 2 has an inner ring surface 21, which has a blind hole 22 corresponding to the guiding surface 132 of the tooth block 13.
- the blind hole 22 is disposed with the elastic element 23.
- One end of the elastic element 23 urges against the guiding surface 132 for controlling the tooth block 13 to move along the bottom of the open groove 121.
- the working element 3 has a working section 31 and a ratchet coupling section 32.
- the working section 31 is for connection with a working object, which is a mounting cylinder for example.
- the ratchet coupling section 32 is mounted on the extending section 12 of the driving element 1 and in the vicinity of one side of the control ring 2.
- the ratchet coupling section 32 has an annular inner surface 321 corresponding to the extending section 12.
- the inner surface 321 is annularly provided with a plurality of racket teeth 322.
- the curvature of the arc surface 133 on the tooth block 13 matches with that of the inner surface 321.
- the teeth 134 on the tooth block 13 are controlled to engage the ratchet teeth 322 on the inner surface 321.
- the extending section 12 of the driving element 1 is annularly disposed with a concave groove 124 near its end portion.
- the concave groove 124 is disposed with a C-shaped buckle 16.
- the inner surface 321 on the ratchet coupling section 32 of the working element 3 is formed with a ring groove 323.
- the ring groove 323 urges against the C-shaped buckle 16 of the extending section 12. The driving element 1 is thus positioned at the working element 3.
- the driving section 11 has a radial through hole 112 for the insertion of a circular bar.
- the circular bar can drive the working object connected to the working section 31.
- the control ring 2 is in either a forward position or a reverse position, opposite to the working element 3.
- the elastic element 23 inside the blind hole 22 pushes the guiding surface 132 of the tooth block 13 using its one end.
- the tooth block 13 is restricted to move along the bottom of the open groove 121.
- the teeth 134 on one side of the tooth block 13 are retracted into the open groove 121, instead of touching the ratchet teeth 322 on the ratchet coupling section 32.
- the teeth 134 on the other side of the tooth block 13 protrude from the ratchet coupling section 32 of the working element 3.
- the 134 engage with the ratchet teeth 322.
- the ratchet teeth 322 of the ratchet coupling section 32 can only rotate in the forward direction, driving in a single direction.
- FIG. 4 Please refer to FIG. 4 in company with FIG. 1 .
- the elastic element 23 inside the blind hole 22 pushes the other side of the guiding surface 132 of the tooth block 13 using its one end.
- the tooth block 13 moves along the bottom of the open groove 121.
- the teeth 134 on one side of the tooth block 13 are retracted inside the open groove 121, instead of touching the ratchet teeth 322 on the ratchet coupling section 32.
- the teeth 134 on the other side of the tooth block 13 protrude from the ratchet coupling section 32 of the working element 3.
- the teeth 134 engage with the ratchet teeth 322.
- the ratchet teeth 322 of the ratchet coupling section 32 can only rotate in the reverse direction, driving in a single direction.
- the holding part 144 of the positioning element 14 depresses the spring 145 at the bottom of the positioning element 14.
- the stopping part 143 is disposed in the radial groove 111.
- the mounting hole 41 of the box end wrench 4 is mounted on the driving section 11 of the driving element 1.
- One side of the box end wrench 4 is stopped at the protruding edge 15.
- the stopping part 143 of the positioning element 14 protrudes from the outer edge of the driving section 11.
- the box end wrench 4 is positioned on the driving section 11 far from the side of the protruding edge 15. In this case, the box end wrench 4 can drive the working object connected to the working section 31 in the single direction.
- FIGS. 6 to 8 in company with FIG. 1 for a second embodiment according to the invention. It differs from the first embodiment in the positioning element 14 of the driving section 11.
- the end of the driving section 11 far from the extending section 12 is connected with a knob 17 in place of the positioning element 14 in the first embodiment.
- the outer edge of the knob 17 forms a hexagon corresponding to the hexagonal pillar of the driving section 11.
- the mounting hole 41 of the box end wrench 4 is mounted on the driving section 11 of the driving element 1.
- one side of the box end wrench 4 is stopped at the protruding edge 15.
- the angles on the outer edge of the knob 17 prevent the box end wrench 4 from the side of the protruding edge 15.
- the box end wrench 4 is positioned at the driving section 11.
- Other operational details are the same as the first embodiment. Therefore, this embodiment can achieve the same effects as the first embodiment.
- FIG. 9 in company with FIG. 1 for a third embodiment of the invention. It differs from the first embodiment in that the driving section 11 of the driving element 1 has a square mounting hole 113 on the end far from the extending section 12.
- the mounting hole 113 can combine with a hand tool that has a square mounting head 51, such as an F-shaped wrench 5, thereby driving the working object connected to the working section 31.
- Other details are the same as the first embodiment. Therefore, same effects as the first embodiment can be achieved.
- FIG. 10 in company with FIG. 1 for a fourth embodiment of the invention. It differs from the first embodiment in the driving section 11 of the driving element 1.
- the driving section 11 of the driving element 1 uses two protruding ears 18 in place of the hexagonal pillar design in the first embodiment. Each of the protruding ears 18 has a hole 181.
- a connecting rod 6 is provided between the two protruding ears 18 and has a hole. Each of the holes 181 of the protruding ears 18 and the hole of the connecting rod 6 is inserted with a pin. Therefore, the driving section 11 connects to the connecting rod 6 and drives the working object connected to the working section 31.
- Other details are the same as the first embodiment. Therefore, same effects as the first embodiment can be achieved.
- the disclosed ratchet connector uses the control ring 2 to conveniently change the driving direction.
- the elastic element 23 inside the control ring 2 urges against the guiding surface 132 of the tooth block 13 by one end.
- the user can smoothly operate the control ring 2.
- the control ring 2 also smoothly controls the tooth block 13 to move along the bottom of the open grove 121, achieving the function of single-direction driving.
- the invention has the advantages of simplifying the manufacturing process of conventional four-latch designs and reducing material costs, without sacrificing the feature of large torques.
- the positioning element 14 or the knob 17 is disposed on the driving section 11 of the driving element 1. It can rapidly and firmly position hand tools such as the box end wrench 4 or open wrench. This increases convenience in use, work efficiency of the user, and competitive power of the invention on the market.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
- The invention relates to a ratchet connector and, in particular, to a ratchet connector with large torque and easy to change its orientation.
-
FIG. 11 shows a conventional ratchet connector. Thehexagonal base 72 of asupporter 71 is inserted in the mounting hole of a box end wrench. The O-ring 73 of thehexagonal base 72 urges against the inner wall of the mounting hole in a resilient way. Thesupporter 71 is positioned at the box end wrench. - However, when the user exerts a force on the box end wrench, it often departs from the
hexagonal base 72. This is very troublesome. - Besides, flipping the
change orientation switch 74 on the side edge of thesupporter 71 can change the screw driving direction to clockwise or counterclockwise. However, thechange orientation switch 74 is located on one side edge of thesupporter 71. Therefore, the user can only operate in a single direction. It is thus very inconvenient. Moreover, thechange orientation switch 74 is often mis-triggered in practice. This is the most serious problem of the ratchet connector. -
FIGS. 12 and 13 show another conventional ratchet connector. It uses aswitch ring 81 to change the screw driving direction. This solves the problem of operating thechange orientation switch 74 in a single direction inFIG. 11 . In particular, afirst latch 82 and athird latch 83 are limited in anaccommodating groove 84 by theswitch ring 81. Asecond latch 85 and afourth latch 86 go into alatch groove 87, respectively. Aratchet 88 is only allowed to rotate in one direction. To rotate theratchet 88 in the opposite direction, one rotates theswitch ring 81 so that thesecond latch 85 and thefourth latch 86 are retracted by theswitch ring 81 into theaccommodating groove 84. Thefirst latch 82 and thethird latch 83 go into thecorresponding latch grooves 87. - Although the
switch ring 81 improves the drawback of triggering by mistake, the control is not accurate. When the user rotates theswitch ring 81 to change the rotating direction of theratchet 88, it is often not smooth because the structures of thelatches -
FIG. 14 shows a third conventional ratchet connector. Aknob 91 is screwed onto adriving section 92 to solve the problem that thebox end wrench 93 may easily fall off thedriving section 92. However, in practice, the user has to first release theknob 91, dispose thebox end wrench 93, and then tighten theknob 91 to position thebox end wrench 93. Theknob 91 is convenient for operations and thus needs to improve. - An objective of the invention is to provide a ratchet connector according to
claim 1 that uses a control ring to rotate and change the driving direction. An elastic element in the control ring urges against the guiding surface of a tooth block. The tooth block can move smoothly. Therefore, the user can readily change the driving direction. - Another objective of the inventionas disclosed in
claim 1 is to use the restriction of a single tooth block by the protruding part of an open groove to increase the stopping force thereof. In addition to provide large torques, the invention can simplify the manufacturing process and reduce the material cost. - A further objective of the invention is to provide a ratchet connector according to
claim 3 with a quick positioning hand tool. A positioning element or knob is disposed at the driving end of the ratchet connector to quickly and firmly position the box end wrench or open wrench. - The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
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FIG. 1 is a three-dimensional exploded view of the first embodiment according to the invention; -
FIG. 2 is a cross-sectional view of the first embodiment; -
FIG. 3 is an A-A cross-sectional view ofFIG. 2 , showing forward driving; -
FIG. 4 is an A-A cross-sectional view ofFIG. 2 , showing reverse driving; -
FIG. 5 is a schematic view showing the function of an anti-loose element in the first embodiment; -
FIG. 6 is a cross-sectional view of the second embodiment; -
FIG. 7 is a side view of the second embodiment; -
FIG. 8 is a schematic view showing the function of an anti-loose element in the second embodiment; -
FIG. 9 is a three-dimensional exploded view of the third embodiment; -
FIG. 10 is a cross-sectional view of the fourth embodiment; -
FIG. 11 is a three-dimensional exploded view of a first conventional ratchet connector; -
FIG. 12 is a schematic view of a second ratchet connector; -
FIG. 13 is a cross-sectional view of a second ratchet connector; and -
FIG. 14 is a schematic view of a third ratchet connector. - The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
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FIGS. 1 to 5 show a first embodiment of the disclosed ratchet connector, which includes adriving element 1, acontrol ring 2, and a workingelement 3. - The
driving element 1 has adriving section 11 and an extendingsection 12. Thedriving section 11 is for a hand tool to connect and drive. The extendingsection 12 has anopen groove 121 along its radial direction. Both sides of theopen groove 121 have asidewall 122, respectively. Each of thesidewalls 122 has aprotruding part 123. Inside theopen groove 121 is disposed with atooth block 13. Both ends of thetooth block 13 have aconcave part 131, respectively. Theconcave parts 131 of thetooth block 13 correspond to the protrudingparts 123 of thesidewalls 122, respectively. Thus, thetooth block 13 is restricted to move along the bottom of theopen groove 121. The end surface of thetooth block 13 opposite to theopen groove 121 has a guidingsurface 132 and anarc surface 133. Both sides of thearc surface 133 haveseveral teeth 134, respectively. The guidingsurface 132 is also an arc surface. - In the first embodiment, the driving
section 11 of the drivingelement 1 is a hexagonal pillar. The drivingsection 11 can thus be combined with a box end wrench 4 or an open wrench. The end of the drivingsection 11 far from the extendingsection 12 has aradial groove 111 that is disposed with apositioning element 14. Thepositioning element 14 has abody 141, apositioning part 142, a stoppingpart 143, and a holdingpart 144. The stoppingpart 143 protrudes from the outer edge of the drivingsection 11. Thepositioning part 142 extends from thebody 141 and close to the bottom of the stoppingpart 143 along the axial direction. It is disposed outside the end portion of the driving section 1 l. Thepositioning part 142 has the holdingpart 144. The holdingpart 144 is parallel to thebody 141. The bottom of thepositioning element 14 is disposed with aspring 145 to urge against the bottom of thebody 141 of thepositioning element 14. The holdingpart 144 depresses thespring 145 at the bottom of thepositioning element 14. The stoppingpart 143 is disposed in theradial groove 111. Once the holdingpart 144 is released, thepositioning element 14 is pushed by thespring 145 so that the stoppingpart 143 protrudes from the outer edge of the drivingsection 11. Using this method, thepositioning element 14 positions one side of the box end wrench 4 or open wrench on the drivingsection 11. - Moreover, a protruding
edge 15 is interposed between the drivingsection 11 and the extendingsection 12. The protrudingedge 15 extends outwards from the peripheral of the drivingelement 1. The protrudingedge 15 can stop the box end wrench 4 or open wrench far from one side of thepositioning element 14. - The
control ring 2 is mounted on the end of the extendingsection 12 close to the drivingsection 11 in the drivingelement 1. Thecontrol ring 2 has aninner ring surface 21, which has ablind hole 22 corresponding to the guidingsurface 132 of thetooth block 13. Theblind hole 22 is disposed with theelastic element 23. One end of theelastic element 23 urges against the guidingsurface 132 for controlling thetooth block 13 to move along the bottom of theopen groove 121. - The working
element 3 has a workingsection 31 and aratchet coupling section 32. The workingsection 31 is for connection with a working object, which is a mounting cylinder for example. Theratchet coupling section 32 is mounted on the extendingsection 12 of the drivingelement 1 and in the vicinity of one side of thecontrol ring 2. Theratchet coupling section 32 has an annularinner surface 321 corresponding to the extendingsection 12. Theinner surface 321 is annularly provided with a plurality ofracket teeth 322. The curvature of thearc surface 133 on thetooth block 13 matches with that of theinner surface 321. Theteeth 134 on thetooth block 13 are controlled to engage theratchet teeth 322 on theinner surface 321. - Moreover, the extending
section 12 of the drivingelement 1 is annularly disposed with aconcave groove 124 near its end portion. Theconcave groove 124 is disposed with a C-shapedbuckle 16. Theinner surface 321 on theratchet coupling section 32 of the workingelement 3 is formed with aring groove 323. Thering groove 323 urges against the C-shapedbuckle 16 of the extendingsection 12. The drivingelement 1 is thus positioned at the workingelement 3. - Besides, the driving
section 11 has a radial throughhole 112 for the insertion of a circular bar. The circular bar can drive the working object connected to the workingsection 31. - Please refer to
FIG. 3 in company withFIG. 1 for how it is used. Thecontrol ring 2 is in either a forward position or a reverse position, opposite to the workingelement 3. When thecontrol ring 2 is rotated to the forward position, theelastic element 23 inside theblind hole 22 pushes the guidingsurface 132 of thetooth block 13 using its one end. Thetooth block 13 is restricted to move along the bottom of theopen groove 121. Theteeth 134 on one side of thetooth block 13 are retracted into theopen groove 121, instead of touching theratchet teeth 322 on theratchet coupling section 32. Theteeth 134 on the other side of thetooth block 13 protrude from theratchet coupling section 32 of the workingelement 3. Using this method, theteeth 134 engage with theratchet teeth 322. Theratchet teeth 322 of theratchet coupling section 32 can only rotate in the forward direction, driving in a single direction. - Please refer to
FIG. 4 in company withFIG. 1 . When thecontrol ring 2 is in the reverse position, theelastic element 23 inside theblind hole 22 pushes the other side of the guidingsurface 132 of thetooth block 13 using its one end. Thetooth block 13 moves along the bottom of theopen groove 121. Theteeth 134 on one side of thetooth block 13 are retracted inside theopen groove 121, instead of touching theratchet teeth 322 on theratchet coupling section 32. Besides, theteeth 134 on the other side of thetooth block 13 protrude from theratchet coupling section 32 of the workingelement 3. Using this method, theteeth 134 engage with theratchet teeth 322. Theratchet teeth 322 of theratchet coupling section 32 can only rotate in the reverse direction, driving in a single direction. - Please refer to
FIG. 5 in company withFIG. 1 . The holdingpart 144 of thepositioning element 14 depresses thespring 145 at the bottom of thepositioning element 14. The stoppingpart 143 is disposed in theradial groove 111. The mountinghole 41 of the box end wrench 4 is mounted on the drivingsection 11 of the drivingelement 1. One side of the box end wrench 4 is stopped at the protrudingedge 15. When the holdingpart 144 is released, the stoppingpart 143 of thepositioning element 14 protrudes from the outer edge of the drivingsection 11. The box end wrench 4 is positioned on the drivingsection 11 far from the side of the protrudingedge 15. In this case, the box end wrench 4 can drive the working object connected to the workingsection 31 in the single direction. - Of course, the invention has many other embodiments that only differ in details. Please refer to
FIGS. 6 to 8 in company withFIG. 1 for a second embodiment according to the invention. It differs from the first embodiment in thepositioning element 14 of the drivingsection 11. In the second embodiment, the end of the drivingsection 11 far from the extendingsection 12 is connected with aknob 17 in place of thepositioning element 14 in the first embodiment. In this embodiment, the outer edge of theknob 17 forms a hexagon corresponding to the hexagonal pillar of the drivingsection 11. - According to the second embodiment, when the
knob 17 is rotated in the same direction as the hexagonal outer edge of the drivingsection 11, the mountinghole 41 of the box end wrench 4 is mounted on the drivingsection 11 of the drivingelement 1. As a consequence, one side of the box end wrench 4 is stopped at the protrudingedge 15. When theknob 17 is rotated in the opposite direction to the hexagonal outer edge of the drivingsection 11, the angles on the outer edge of theknob 17 prevent the box end wrench 4 from the side of the protrudingedge 15. In this case, the box end wrench 4 is positioned at the drivingsection 11. Other operational details are the same as the first embodiment. Therefore, this embodiment can achieve the same effects as the first embodiment. - Please refer to
FIG. 9 in company withFIG. 1 for a third embodiment of the invention. It differs from the first embodiment in that the drivingsection 11 of the drivingelement 1 has a square mountinghole 113 on the end far from the extendingsection 12. The mountinghole 113 can combine with a hand tool that has a square mountinghead 51, such as an F-shapedwrench 5, thereby driving the working object connected to the workingsection 31. Other details are the same as the first embodiment. Therefore, same effects as the first embodiment can be achieved. - Please refer to
FIG. 10 in company withFIG. 1 for a fourth embodiment of the invention. It differs from the first embodiment in thedriving section 11 of the drivingelement 1. In this embodiment, the drivingsection 11 of the drivingelement 1 uses two protrudingears 18 in place of the hexagonal pillar design in the first embodiment. Each of the protrudingears 18 has ahole 181. A connectingrod 6 is provided between the two protrudingears 18 and has a hole. Each of theholes 181 of the protrudingears 18 and the hole of the connectingrod 6 is inserted with a pin. Therefore, the drivingsection 11 connects to the connectingrod 6 and drives the working object connected to the workingsection 31. Other details are the same as the first embodiment. Therefore, same effects as the first embodiment can be achieved. - In summary, the disclosed ratchet connector uses the
control ring 2 to conveniently change the driving direction. Theelastic element 23 inside thecontrol ring 2 urges against the guidingsurface 132 of thetooth block 13 by one end. The user can smoothly operate thecontrol ring 2. Thecontrol ring 2 also smoothly controls thetooth block 13 to move along the bottom of theopen grove 121, achieving the function of single-direction driving. Besides, the invention has the advantages of simplifying the manufacturing process of conventional four-latch designs and reducing material costs, without sacrificing the feature of large torques. Moreover, thepositioning element 14 or theknob 17 is disposed on the drivingsection 11 of the drivingelement 1. It can rapidly and firmly position hand tools such as the box end wrench 4 or open wrench. This increases convenience in use, work efficiency of the user, and competitive power of the invention on the market. - Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to people skilled in the art. Therefore, it is contemplated that the appended claims will cover all modifications.
Claims (8)
- A ratchet connector comprising:a driving element (1), which has a driving section (11) for connecting to and being driven by a hand tool and an extending section (12), wherein the extending section (12) has an open groove (121) in the radial direction, both sides of the open groove (121) have a sidewall (122), respectively, each of the sidewalls (122) has a protruding part (123), the open groove (121) is disposed with a tooth block (13) whose both ends have a concave part (131), respectively, corresponding to the protruding parts (123) of the sidewalls (122) so that the tooth block (13) is controlled to move along the bottom of the open groove (121), the end surface of the tooth block (13) opposite to the open groove (121) bottom has a guiding surface (132) and an arc surface (133), and both sides of the arc surface (133) have a plurality of teeth (134);a control ring (2), which is mounted on the extending section (12) of the driving element (1), in the vicinity of the driving section (11), wherein the control ring (2) has an inner ring surface (21) with a blind hole (22), the blind hole (22) has an elastic element (23) whose one end urges against the bottom of the blind hole (22) and whose other end urges against the guiding surface (132) of the tooth block (13), thereby controlling the tooth block (13) to move along the bottom of the open groove (121); anda working element (3), which has a working section (31) for the connection of a working object and a ratchet coupling section (32) mounted on the extending section (12) of the driving element (1) and in the vicinity of the control ring (2), wherein the ratchet coupling section (32) has an annular inner surface (321) corresponding to the extending section (12), the inner surface (321) has a plurality of ratchet teeth (322) around it, and the curvature of the arc surface (133) on the tooth block (13) matches with that of the inner surface (321) so that the teeth (134) on the tooth block (13) are controlled to engage the ratchet teeth (322) on the inner surface (321).
- The ratchet connector of claim 1, wherein
the driving section (11) of the driving element (1) is a hexagonal pillar for the connection to a hand tool, such as the box end wrench (4) or open wrench;
the end of the driving section (11) far from the extending section (12) has a radial groove (111) disposed with a positioning element (14);
the positioning element (14) has a body (141), a positioning part (142), a stopping part (143), and a holding part (144);
the stopping part (143) protrudes from an outer edge of the driving section (11); the positioning part (142) extends in the axial direction from the body (141) and close to the bottom of the stopping part (143) and is disposed on the outer side of the end of the driving section (11);
the positioning part (142) has the holding part (144) parallel to the body (141);
the bottom of the positioning element (14) is disposed with a spring (145) to urge against the positioning element (14);
the holding part (144) depresses the spring (145) at the bottom of the positioning element (14);
the stopping part (143) is disposed in the radial groove (111); and
when the holding part (144) is released, the positioning part (14) is pushed by the spring (145) so that the stopping part (143) protrudes from the outer edge of the driving section (11). - The ratchet connector of claim 1, wherein the driving section (11) of the driving element (1) is a hexagonal pillar, the end of the driving section (11) far from the extending section (12) is pivotally connected with a knob (17), the outer edge of the knob (17) is a hexagon corresponding to the hexagonal pillar of the driving section (11).
- The ratchet connector of claim 1, wherein the driving section (11) further has a radial through hole (112) for the insertion of a circular bar to drive the working object connected to the working section (31).
- The ratchet connector of claim 1, wherein the end of the driving section (11) far from the extending section (12) has a square mounting hole (113).
- The ratchet connector of claim 1, wherein the driving section (11) of the driving element (1) includes two protruding ears (18), each of which has a hole (181), a connecting rod (6) is provided between the two protruding ears (18) and has a hole, the holes of the protruding ears (18) and the connecting rod (6) are inserted with pins so that the driving section (11) connects to the connecting rod (6).
- The ratchet connector of claim 1, wherein a protruding edge (15) is interposed between the driving section (11) and the extending section (12) and extends from the side of the driving element (1) outwards for stopping one side of the hand tool, such as the box end wrench (4) or open wrench.
- The ratchet connector of claim 1, wherein the extending section (12) of the driving element (1) is annularly formed with a concave groove (124) near its end, the concave groove (124) is provided with a C-shaped buckle (16), the inner surface (321) of the ratchet coupling section (32) on the working element (3) is concavely formed with a ring groove (323), and the ring groove (323) urges against the C-shaped buckle (16) of the extending section (12) so that the driving element (1) is positioned on the working element (3).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20090001532 EP2216138B1 (en) | 2009-02-04 | 2009-02-04 | Ratchet connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20090001532 EP2216138B1 (en) | 2009-02-04 | 2009-02-04 | Ratchet connector |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2216138A1 EP2216138A1 (en) | 2010-08-11 |
EP2216138B1 true EP2216138B1 (en) | 2013-06-05 |
Family
ID=40688548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20090001532 Not-in-force EP2216138B1 (en) | 2009-02-04 | 2009-02-04 | Ratchet connector |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2216138B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201524690A (en) * | 2013-12-19 | 2015-07-01 | Ai-Nong Yu | Ratchet joint |
TWI508828B (en) * | 2015-05-15 | 2015-11-21 | Chien-Chuan Kao | Tool adapter |
DE102018204822A1 (en) * | 2018-03-29 | 2019-10-02 | Bayerische Motoren Werke Aktiengesellschaft | Adapter device for a screwing tool |
TWI739617B (en) | 2020-09-30 | 2021-09-11 | 優鋼機械股份有限公司 | Wrench structure with variable driving state |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE933739C (en) * | 1952-09-18 | 1955-09-29 | Richard Abr Herder Fa | Ratchet |
US4807500A (en) * | 1986-11-14 | 1989-02-28 | Main Harvey M | Reversing ratchet mechanism for tools |
DE19932353A1 (en) * | 1999-07-10 | 2001-01-11 | Adolf Wuerth Gmbh & Co Kg | Insert tool for a key |
US6766716B1 (en) * | 2003-05-27 | 2004-07-27 | Daniel Lee | Adapter for a ratchet wrench for engaging with socket or other tools of the like |
US7434493B2 (en) * | 2007-01-04 | 2008-10-14 | Chin-Tan Huang | Ratchet driving mechanism with two sets of pawls |
DE202008001965U1 (en) * | 2008-02-13 | 2008-05-08 | Yang, Chung Cheng, Dali City | ratchet wrench |
DE202008003076U1 (en) * | 2008-03-04 | 2008-05-21 | Chang, Pi-Hsia, Wurih | Construction of a regulatory pawl |
-
2009
- 2009-02-04 EP EP20090001532 patent/EP2216138B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP2216138A1 (en) | 2010-08-11 |
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