EP2216138A1 - Ratschenkupplung - Google Patents

Ratschenkupplung Download PDF

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Publication number
EP2216138A1
EP2216138A1 EP09001532A EP09001532A EP2216138A1 EP 2216138 A1 EP2216138 A1 EP 2216138A1 EP 09001532 A EP09001532 A EP 09001532A EP 09001532 A EP09001532 A EP 09001532A EP 2216138 A1 EP2216138 A1 EP 2216138A1
Authority
EP
European Patent Office
Prior art keywords
section
driving
ratchet
tooth block
driving section
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.)
Granted
Application number
EP09001532A
Other languages
English (en)
French (fr)
Other versions
EP2216138B1 (de
Inventor
Ping Wen Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP20090001532 priority Critical patent/EP2216138B1/de
Publication of EP2216138A1 publication Critical patent/EP2216138A1/de
Application granted granted Critical
Publication of EP2216138B1 publication Critical patent/EP2216138B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B13/465—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
    • 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 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 invention 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 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)
EP20090001532 2009-02-04 2009-02-04 Ratschenkupplung Not-in-force EP2216138B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20090001532 EP2216138B1 (de) 2009-02-04 2009-02-04 Ratschenkupplung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090001532 EP2216138B1 (de) 2009-02-04 2009-02-04 Ratschenkupplung

Publications (2)

Publication Number Publication Date
EP2216138A1 true EP2216138A1 (de) 2010-08-11
EP2216138B1 EP2216138B1 (de) 2013-06-05

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ID=40688548

Family Applications (1)

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EP20090001532 Not-in-force EP2216138B1 (de) 2009-02-04 2009-02-04 Ratschenkupplung

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI468263B (de) * 2013-12-19 2015-01-11
TWI508828B (zh) * 2015-05-15 2015-11-21 Chien-Chuan Kao 承接工具
DE102018204822A1 (de) * 2018-03-29 2019-10-02 Bayerische Motoren Werke Aktiengesellschaft Adaptereinrichtung für ein Schraubwerkzeug
DE102021116291B4 (de) 2020-09-30 2023-06-22 Kabo Tool Company Variable Antriebszustände erlaubende Schraubenschlüsselstruktur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933739C (de) * 1952-09-18 1955-09-29 Richard Abr Herder Fa Aufsteckknarre
US4807500A (en) * 1986-11-14 1989-02-28 Main Harvey M Reversing ratchet mechanism for tools
DE19932353A1 (de) * 1999-07-10 2001-01-11 Wuerth Adolf Gmbh & Co Kg Einsatzwerkzeug für einen Schlüssel
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
DE202008001965U1 (de) * 2008-02-13 2008-05-08 Yang, Chung Cheng, Dali City Ratschenschlüssel
DE202008003076U1 (de) * 2008-03-04 2008-05-21 Chang, Pi-Hsia, Wurih Aufbau einer Reguliersperrklinke
US20080163724A1 (en) * 2007-01-04 2008-07-10 Chin-Tan Huang Ratchet driving mechanism with two sets of pawls

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933739C (de) * 1952-09-18 1955-09-29 Richard Abr Herder Fa Aufsteckknarre
US4807500A (en) * 1986-11-14 1989-02-28 Main Harvey M Reversing ratchet mechanism for tools
DE19932353A1 (de) * 1999-07-10 2001-01-11 Wuerth Adolf Gmbh & Co Kg Einsatzwerkzeug für einen Schlüssel
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
US20080163724A1 (en) * 2007-01-04 2008-07-10 Chin-Tan Huang Ratchet driving mechanism with two sets of pawls
DE202008001965U1 (de) * 2008-02-13 2008-05-08 Yang, Chung Cheng, Dali City Ratschenschlüssel
DE202008003076U1 (de) * 2008-03-04 2008-05-21 Chang, Pi-Hsia, Wurih Aufbau einer Reguliersperrklinke

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI468263B (de) * 2013-12-19 2015-01-11
TWI508828B (zh) * 2015-05-15 2015-11-21 Chien-Chuan Kao 承接工具
DE102018204822A1 (de) * 2018-03-29 2019-10-02 Bayerische Motoren Werke Aktiengesellschaft Adaptereinrichtung für ein Schraubwerkzeug
DE102021116291B4 (de) 2020-09-30 2023-06-22 Kabo Tool Company Variable Antriebszustände erlaubende Schraubenschlüsselstruktur

Also Published As

Publication number Publication date
EP2216138B1 (de) 2013-06-05

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