EP0861140A1 - Coupling device and rotary drive tool therefor - Google Patents
Coupling device and rotary drive tool thereforInfo
- Publication number
- EP0861140A1 EP0861140A1 EP96938298A EP96938298A EP0861140A1 EP 0861140 A1 EP0861140 A1 EP 0861140A1 EP 96938298 A EP96938298 A EP 96938298A EP 96938298 A EP96938298 A EP 96938298A EP 0861140 A1 EP0861140 A1 EP 0861140A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- conduit
- male part
- transmission means
- proximal
- 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
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 18
- 238000010168 coupling process Methods 0.000 title claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims 1
- 239000011324 bead Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0021—Prolongations interposed between handle and tool
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/60—Biased catch or latch
- Y10T403/602—Biased catch or latch by separate spring
- Y10T403/604—Radially sliding catch
Definitions
- Coupling device and corresponding rotary drive tool.
- the present invention relates to a device for coupling a male part part with a female part part provided with a locking recess, of the type described in the preamble of claim 1.
- the invention applies in particular to the coupling between an extension or a universal joint of a rotary drive tool, for example of a ratchet, and another extension, an interchangeable socket or a universal joint for screwing / unscrewing.
- the actuator is a ring mounted to slide on the male part and connected directly to the transmission means, constituted by a central rod, by a transverse pin.
- the transmission means constituted by a central rod, by a transverse pin.
- the pin passes through a diametrical slot of the male part which must be sufficiently long and wide, which considerably weakens the male part.
- the object of the invention is to provide a more robust coupling device than these known devices, while being reliable, comfortable to use and unlikely to clog.
- the subject of the invention is a coupling device of the aforementioned type, characterized by the characterizing part of claim 1.
- the coupling device according to the invention may have one or more of the characteristics The claims of claims 2 to 14.
- the invention also relates to a rotary drive tool, in particular a rigid or flexible extension, a universal joint, an articulated or sliding handle or a crankshaft, comprising a part of male part whose distal end part is intended to fit into a female part of a drive member, in particular a socket, a universal joint or a rigid or flexible extension, provided with a locking recess, the part of male part comprising a coupling device as defined above.
- FIG. 1 shows, with partial section, an extension according to the invention, associated with a socket and a tool d 'rotation drive;
- - Figure 2 shows the same extension, with its distal end portion in section;
- - Figure 3 shows in longitudinal section the distal end of the extension, on a larger scale, with the coupling device in the rest or locking position;
- Figure 4 is a view similar to Figure 3, but with the coupling device in the unlocked position;
- FIGS. 5 and 7 are views similar to Figures 3 and 4 respectively but corresponding to a second embodiment;
- - Figure 6 is a sectional view along line VI-VI of Figure 5;
- Figures 8 and 10 are views similar to Figures 3 and 4 respectively but corresponding to a third embodiment
- FIG. 9 is a sectional view taken along line IX-IX of Figure 8.
- FIG. 11 and 13 are views analogous to Figures 3 and 4 respectively but relating to a fourth embodiment
- FIG. 12 is a sectional view along line XII-XII of Figure 11;
- FIG. 14 is a view similar to Figure 3 but corresponding to a fifth embodiment
- FIG. 15 is a half-view similar to the upper part of Figure 4, but relating to the fifth embodiment
- FIG. 16 is a view similar to Figure 3 but corresponding to a sixth embodiment
- Figure 17 is a view similar to Figure 15 but relating to the sixth embodiment
- FIG. 18 is a partial view in axial section of a universal joint according to the invention.
- FIG. 19 is a partial view taken along arrow XIX of Figure 18;
- FIG. 20 is a partial half-view in section along line XX-XX of Figure 18; and - Figures 21 to 23 are views, respec ⁇ tively similar to Figures 18 to 20, of a gimbal variant.
- the extension 1 shown in Figures 1 and 2 has the general shape of a straight bar of axis X-X, assumed to be horizontal for the convenience of the description.
- This extension is intended to cooperate, by its proximal or rear end (on the right in FIGS. 1 and 2), with a tip 2 of a tool 3 for driving in rotation, which is for example a ratchet wrench.
- the end piece 2 can in particular be a standardized square and is received in a conjugate axial orifice 4 of the extension.
- the extension At its distal or front end (on the left in the drawing), the extension has a male profile of non-circular coupling 6 and is fitted with a coupling device 7.
- Profile 6 is adapted to fit into a conjugate female profile provided in the proximal end of an interchangeable socket 8.
- the distal end of the latter has a drive profile adapted to cooperate with the head of a member to be driven in rotation, which is typically a screw or nut.
- the locking device 7 ( Figures 3 and
- a central bore on the blind stage A is formed along the axis XX from the distal end of the extension. It successively includes an entrance part 9 of large diameter, an intermediate portion 10 of medium diameter, and a main portion 11 of small diameter and greater length, terminating clearly beyond the portion 6 of the extension.
- a first radial conduit 12 connects the intermediate part 10 of the bore A to the surface of the extension and opens into a hollow region of the profile 6. The external opening of this conduit 12 is narrowed.
- the conduit 13 is counter-bored approximately to mid-length, which defines an inner shoulder 14.
- An actuator 15 is mounted to tilt in the conduit 13. It comprises a spherical ball joint 16 held between the shoulder 14 and a outer crimping bead 17 produced at the inlet of the conduit.
- the ball joint 16 is extended outwards by a rework button 18, projecting from the outside surface of the extension, and inwards by a shank 19, which penetrates into the bore part 11.
- the diameter of the tail 19 is slightly less than that of this part 11.
- a central transmission rod T is received in the bore A.
- a cup 26 is fixed in the inlet part 9 of the bore, and a return spring 27 is compressed between the bottom of this cup and the front end of the rod T, the stud 25 ensuring the centering of the spring.
- a locking ball 28 is housed with a small clearance in the conduit 12 and is retained therein by the aforementioned narrowing of its opening.
- the ball 28 is held in the external position, in which it protrudes from the extension. It is then in contact with the front end of the cam 24.
- the rear end of the transmission rod T is then approximately at the right of the axis of the conduit 13, which pushes the tail 19 towards the back.
- the button 18 is therefore tilted forward, as shown.
- a recess 8A for example constituted by an O-shaped groove as shown in phantom in Figure 3, is located opposite the duct 12.
- the spring 27 is then allowed to return the central rod T to its initial position, which brings out the ball 28 under the action of the cams 22 then 24, the ball consequently being housed in the recess 8A from the socket.
- the coupling is then locked.
- the actuator 15 is substantially guided laterally, so that its movement is practically limited to pitching back and forth in the common plane of the conduits 12 and 13.
- the variations in radial clearance between the sleeve and the extension, as well as the variations in depth of the recess 8A, are automatically compensated for by the presence of the cam 24 and the spring 27 , which permanently exert an elastic stress on the ball radially outwards.
- the locking position of the device 7 is therefore practically identical to its rest position.
- the central bore A has a constant diameter over its entire length and extends well beyond line 13;
- the transmission rod T successively comprises, from front to rear: a short guide section 29 of the same diameter as the bore; the unlocking section 21 of small diameter; the frustoconical cam 22, which flares rearward; the lock portion 23 of average diameter; the frustoconical cam 24, which also flares rearward; the body 20, of the same diameter as the bore, in which a groove 30 is formed near its rear end; and the pin 25 for centering the return spring 27, which is compressed between the rear part of the rod and the bottom of the bore;
- the groove 30 is replaced by a biconical orifice 32, in the form of a diabolo, with an axis parallel to the axis of the conduit 13;
- the tail 19 is, as in Figures 3 and 4, a cylindrical stud, and it enters the orifice 32 to beyond the general axis X-X;
- the button 18 is replaced by another cylindrical stud 33;
- the stud 33 is received in a recess 34 of an operating slide 35 in the form of a cylindrical sector.
- This slide is held against the surface of the extension by the fact that its two lateral edges 36, of reduced thickness, slide in longitudinal grooves 37 ( Figure 9) of a sleeve 38 integral with the extension; and
- the ball joint 16 of the actuator is not supported on the bead 17 but is biased towards the latter by an auxiliary spring 39 compressed between one shoulder 14 and the ball joint. This avoids any risk of play of the actuator while ensuring that it has great freedom of movement.
- the operation is the same as that of the embodiment of Figures 5 to 7, except that the actuator is operated indirectly, via the slide 35, which is pushed forward to retract the ball.
- the slide 35 improves the comfort of use and effectively protects the internal mechanism against the introduction of dirt.
- the fixed sleeve 38 protects the slide against the risk of inadvertent actuation by surrounding parts when the extension is pulled back.
- the biconical orifice 32 ensures lateral guidance of the actuator by itself, while making it possible to obtain increased axial displacement of the central rod and eliminating any play between the actuator and this rod, whatever the direction of movement.
- the ball joint 16 is hemispherical, its radially outer part being eliminated;
- the slide 35-sleeve assembly 38 is replaced by a sliding ring 40 which internally has the recess 34 for receiving the stud 33;
- the ring 40 comprises a tubular body 43, of approximately constant thickness, which surrounds with a large clearance the extension and which is guided on the latter, at the front, by an internal collar 44. The latter is applies, in the rest and locking position, against a circlip 45 received in a groove 46 of the extension, adjacent to the profile 6.
- the ring 40 is supplemented by a cylindrical ring 47 disposed between the body 43 and the extension. This ring has at the front a notch 48 receiving the stud 33 of the actuator.
- a return spring 49 is compressed between the rear end edge of the ring 47 and a second circlip 50 received in a second groove 51 of the extension. This second circlip also constitutes a means for rear guiding the body 43.
- the assembly 43-47 is pushed forward by the spring 49, so that the actuator 15 is tilted forward.
- the retraction of the ball is obtained by pulling the ring body 43 backwards, which compresses the spring 49 via the ring 47.
- the ring 40 is protected against any untimely unlocking by the sleeve itself, which has an outside diameter at least equal to that of this ring.
- Circlip 45 also contributes to this protection.
- the large diameter of the return spring 49 provides great locking reliability.
- Figures 16 and 17 constitutes a variant of that of Figures 5 to 7, from which it differs by the arrangement of the actuator. In fact, the radially inner half of the ball joint 16 is eliminated, and the remaining half ball joint is biased outwards by an auxiliary spring 39.
- Figures 18 to 20 illustrate the application of the invention to a universal joint whose male part IA is articulated, via a cross-member 1B, to the female part 1C of the universal joint.
- the male part IA comprises a body 60 which ends in the male coupling profile 6.
- the bore central A crosses the body right through and is counter-bored at 61 from its proximal end to a short distance from the distal radial duct 12 which receives the ball 28.
- the body 60 ends in a face 62 roughly transverse to the axis XX and slightly concave, on which protrude two ears 63 connected to the cross 1B.
- the central rod T is similar to that of Figures 14 and 15, except that its proximal end is full and provided with an extra thickness 64 which slides in the overbore 61.
- the return spring 27 is compressed between this extra thickness and 1 ' bottom shoulder of the overbore.
- the rocker 15 comprises a button 18 for direct actuation as in FIGS. 1 to 7. Its ball joint 16 is held against the shoulder 14 of the proximal radial duct 13 by a forked end branch 67 of a fixed stirrup 68 in general form of C.
- the core 69 of this stirrup follows the face 62 of the body 60 and is guided laterally between the internal faces, flat and parallel to the axis XX and between them, with the two ears 63.
- the two branches of end 67 and 70 of the stirrup snap into opposite recesses 71 of the body 60, each provided with an overhanging projection 72 at their proximal end.
- the notch 73 of the fork 67 has a U shape with two parallel edges and laterally guides the button 18, which is cylindrical.
- the rocker 15 has a single degree of freedom, in rotation about the axis of the ball joint 16 which is perpendicular to the axis XX.
- the stirrup 68 goes around the body 60. It comprises a flat core 80 provided with an oblong hole 81 which laterally guides the cylindrical button 18, this core 80 being applied to a flat face 82 of the body 60.
- the legs of the stirrup are positioned by lateral recesses 83 of the body 60, in which they are received.
- the free ends of these branches are applied to a flat face 84 of the body 60 opposite to the face 82.
- a plug 85 closes the proximal end of the overbore 61.
- the socket 8 can be replaced by any other member or tool having a similar female part, for example by a universal joint or by an extension (rigid or flexible).
- extension 1 can of course be replaced by any other member or tool having a similar male part, in particular by a universal joint, by an extension (rigid or flexible), by an articulated handle, by a crankshaft or by a sliding handle.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Manipulator (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Gripping On Spindles (AREA)
- Power Steering Mechanism (AREA)
- Moulding By Coating Moulds (AREA)
- Pivots And Pivotal Connections (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513485 | 1995-11-14 | ||
FR9513485A FR2741123B1 (en) | 1995-11-14 | 1995-11-14 | COUPLING DEVICE AND CORRESPONDING ROTATION DRIVE TOOL |
PCT/FR1996/001783 WO1997018061A1 (en) | 1995-11-14 | 1996-11-12 | Coupling device and rotary drive tool therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0861140A1 true EP0861140A1 (en) | 1998-09-02 |
EP0861140B1 EP0861140B1 (en) | 1999-06-16 |
Family
ID=9484553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96938298A Expired - Lifetime EP0861140B1 (en) | 1995-11-14 | 1996-11-12 | Coupling device and rotary drive tool therefor |
Country Status (10)
Country | Link |
---|---|
US (1) | US6062112A (en) |
EP (1) | EP0861140B1 (en) |
JP (1) | JP2000500075A (en) |
CN (1) | CN1059375C (en) |
AT (1) | ATE181273T1 (en) |
AU (1) | AU7577096A (en) |
DE (1) | DE69602968T2 (en) |
ES (1) | ES2135260T3 (en) |
FR (1) | FR2741123B1 (en) |
WO (1) | WO1997018061A1 (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6386789B1 (en) * | 1999-09-24 | 2002-05-14 | Paul D. Chausse | Quick release ball type locking pin and production tool |
US6327941B1 (en) * | 2000-05-08 | 2001-12-11 | Chin-Shun Cheng | Socket wrench extension structure |
US6672183B2 (en) * | 2001-04-20 | 2004-01-06 | Theodore L. Johnson | Quick release for use with impact wrench |
DE20209159U1 (en) | 2002-06-12 | 2002-08-29 | Wille Gmbh & Co | Quick lock for extensions of plug-in tools |
US6799919B2 (en) | 2002-12-04 | 2004-10-05 | Ryeson Corporation | Coupling with enhanced concentricity maintainability and torque handling capability |
DE20220042U1 (en) * | 2002-12-20 | 2004-05-06 | Kuka Schweissanlagen Gmbh | Spindle extension for assembly supports in motor vehicle construction has spring-loaded centering mounting for spindle shaft and with spindle-symmetrical circumferential side cone on spindle shaft |
US20040126182A1 (en) * | 2002-12-27 | 2004-07-01 | Yu-Cheng Lin | Connector |
EP1457292A1 (en) * | 2003-02-18 | 2004-09-15 | Hand Tool Design Corporation | Tool bit/handle connector |
US7225709B2 (en) * | 2005-02-28 | 2007-06-05 | I-He Liao | Control device for connector for securing socket thereon |
DE102006026532A1 (en) * | 2006-06-06 | 2007-12-13 | Moll Maschinenbau Gmbh | Rapid tool changer, especially for screwdriver tool, has latching connection formed between connecting element and coupling element in tensionally strong manner |
DE102007025078A1 (en) * | 2007-05-30 | 2008-12-04 | Wera Werk Hermann Werner Gmbh & Co. Kg | Torque transmission device with switchable detent ball |
DE102008064424B4 (en) * | 2008-12-22 | 2010-11-25 | Medica-Medizintechnik Gmbh | Plug-in coupling device |
US7895924B2 (en) * | 2009-01-19 | 2011-03-01 | Chih-Ching Hsieh | Socket connection device |
BR112013027097B8 (en) * | 2011-04-20 | 2022-12-27 | Brian Investiments Pty Ltd | PIN WITHOUT NUT |
TW201244886A (en) * | 2011-05-06 | 2012-11-16 | Hou-Fei Hu | Fast-releasing screwdriver transmission shaft |
US20130192860A1 (en) | 2011-06-24 | 2013-08-01 | Black & Decker Inc. | Electromagnetic mode change mechanism for power tool |
US9364942B2 (en) * | 2011-06-24 | 2016-06-14 | Black & Decker Inc. | Quick release socket attachment for impact wrench |
TW201350290A (en) * | 2012-06-14 | 2013-12-16 | Hong Ann Tool Ind Co Ltd | Quick release coupling rod dedicated for pneumatic tool |
US9669526B2 (en) * | 2014-01-07 | 2017-06-06 | Ingersoll-Rand Company | Tools with socket retainers |
ES2546228B1 (en) * | 2015-05-14 | 2016-04-21 | Seat, S.A. | Connection system between a first and a second part of a vehicle, and a tool for unlocking said connection system |
US9810506B2 (en) * | 2016-01-13 | 2017-11-07 | Smith & Wesson Corp. | Self-captured detent mechinism |
CN105619300B (en) * | 2016-02-25 | 2017-10-31 | 中山诺顿科研技术服务有限公司 | Multifunctional wrench |
US11078642B2 (en) | 2018-07-11 | 2021-08-03 | Cnh Industrial America Llc | Coupler push down eject lever |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0053215B1 (en) * | 1980-11-29 | 1984-06-06 | Losenhausen Maschinenbau AG& Co Kommanditgesellschaft | Adjusting device |
US4571113A (en) * | 1984-03-27 | 1986-02-18 | Coren Alfred S | Locking joints |
US4848196A (en) * | 1984-10-23 | 1989-07-18 | Roberts Peter M | Quick release and automatic positive locking mechanism for socket wrenches and extension bars for socket wrenches |
IT8521924V0 (en) * | 1985-05-23 | 1985-05-23 | Fata Europ Group | REMOVABLE CONNECTION JOINT BETWEEN A DRIVING SHAFT AND A DRIVEN SHAFT. |
US4721022A (en) * | 1986-01-27 | 1988-01-26 | Vsi Corporation | Wrenching tool |
GB8900904D0 (en) * | 1989-01-16 | 1989-03-08 | Latchways Ltd | Releasable coupling or attachment device |
US5090257A (en) * | 1990-05-09 | 1992-02-25 | The United States Of America As Represented By The Secretary Of The Army | Automatic isokinetic aerosol sampling system |
GB2257647B (en) * | 1991-07-17 | 1994-06-15 | Chiro Tool Mfg Corp | Retainer apparatus for a wrench unit |
US5291809A (en) * | 1992-03-02 | 1994-03-08 | Fox Iii Leonard J | Locking adapter for socket wrench |
DE4207605C1 (en) * | 1992-03-10 | 1993-09-30 | Lorenz Stoeger | Pneumatic screwdriver with blade coupling inside rotary cylinder - has front cylinder-section movable in relation to rear containing coupling to allow rearwards extraction of released blade |
US5390571A (en) * | 1993-03-05 | 1995-02-21 | Fox, Iii; Leonard J. | Push button socket locking mechanism |
US5433548A (en) * | 1993-09-22 | 1995-07-18 | Roberts Tool International (Usa), Inc. | Universal joint for torque transmitting tools |
EP0747174B1 (en) * | 1995-05-30 | 1997-03-26 | Jessie Chow | Coupling mechanism of socket wrench extension |
-
1995
- 1995-11-14 FR FR9513485A patent/FR2741123B1/en not_active Expired - Fee Related
-
1996
- 1996-11-12 CN CN96198300A patent/CN1059375C/en not_active Expired - Fee Related
- 1996-11-12 US US09/068,096 patent/US6062112A/en not_active Expired - Fee Related
- 1996-11-12 AT AT96938298T patent/ATE181273T1/en not_active IP Right Cessation
- 1996-11-12 JP JP9518624A patent/JP2000500075A/en not_active Ceased
- 1996-11-12 AU AU75770/96A patent/AU7577096A/en not_active Abandoned
- 1996-11-12 WO PCT/FR1996/001783 patent/WO1997018061A1/en active IP Right Grant
- 1996-11-12 DE DE69602968T patent/DE69602968T2/en not_active Expired - Fee Related
- 1996-11-12 ES ES96938298T patent/ES2135260T3/en not_active Expired - Lifetime
- 1996-11-12 EP EP96938298A patent/EP0861140B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9718061A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE69602968D1 (en) | 1999-07-22 |
ES2135260T3 (en) | 1999-10-16 |
AU7577096A (en) | 1997-06-05 |
DE69602968T2 (en) | 2000-02-17 |
FR2741123B1 (en) | 1998-01-30 |
WO1997018061A1 (en) | 1997-05-22 |
US6062112A (en) | 2000-05-16 |
EP0861140B1 (en) | 1999-06-16 |
ATE181273T1 (en) | 1999-07-15 |
JP2000500075A (en) | 2000-01-11 |
CN1059375C (en) | 2000-12-13 |
FR2741123A1 (en) | 1997-05-16 |
CN1202124A (en) | 1998-12-16 |
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