EP3408055A1 - Schraubwerkzeug mit richtungsumschaltbarem freilaufgesperre - Google Patents
Schraubwerkzeug mit richtungsumschaltbarem freilaufgesperreInfo
- Publication number
- EP3408055A1 EP3408055A1 EP17700402.5A EP17700402A EP3408055A1 EP 3408055 A1 EP3408055 A1 EP 3408055A1 EP 17700402 A EP17700402 A EP 17700402A EP 3408055 A1 EP3408055 A1 EP 3408055A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- locking
- screwing tool
- tool according
- teeth
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 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
- 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
-
- 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
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type
-
- 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
- B25B13/468—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member with possibility of locking the ratchet mechanism
Definitions
- the invention relates to a screwing tool having a direction-switchable freewheel mechanism, comprising a driven member rotatably mounted about an axis in a bearing eye of a drive member, a driven member having a peripheral toothing and an output profile portion, and a locking member engaging in a pocket of the drive member for rotationally locking engagement in the peripheral teeth having locking members.
- a generic screwing tool in the form of a ratchet wrench is described in DE 10 2014 113 758 A1.
- a drive member is formed there by an elongate body which has a spanner profile at one end and a ring spanner profile at the other end.
- the output profile (ring spanner profile) is formed by an output member which rotatably rests in a bearing eye and has a peripheral toothing. It is provided a locking body having two Sperrveriereungsabbalde, each engaging in one of the two switching positions in the peripheral teeth to lock the rotation of the output member relative to the drive member in one of the two directions of rotation.
- the blocking body forms a first locking member, which rests in a first switching position of a switching element in a locking gusset, which faces a second locking gusset.
- the invention has for its object to further develop the direction-reversible freewheel mechanism benefit advantageous.
- the locking members of two bodies are formed, which can be displaced relative to each other.
- the locking members are preferably not materially connected to each other.
- the locking members can preferably relocate articulated against each other.
- hook projections can be provided, which engage with each other.
- Each locking member has a locking toothing, which runs on a circular arc line whose center coincides in the tooth engagement position with the center of the peripheral toothing. It is envisaged that in the two switching positions in which the output member can be rotated in each case in a rotational direction, but locked in the other direction, only one of the two switching elements engages with their locking teeth in the circumferential teeth.
- the locking members are formed essentially folding symmetrical.
- Each locking member may have a switching extension, wherein the two switch projections preferably protrude into the same switching recess of a switching element.
- a spring-loaded control edge can be arranged within the switching element.
- the control edge may be formed by a curved surface of a Heidelbergstkovs.
- the switching punch can eino in a bore of the switching element and be acted upon by a switching spring.
- the switching spring can in turn be supported on a locking ram, which cooperates with a locking cam, which in the two switch positions. each engages in a latching recess.
- the locking cam can be connected in the same material with the locking ram.
- the locking cam is formed by a detent ball, which is acted upon by the locking ram.
- the switching element can be rotatable about a parallel axis to the axis of rotation eino in a bore of the drive member.
- the Freilaufgesperres the switching element is rotated about its axis. It displaces the two preferably mutually coupled locking members in aximutaler direction in a pocket of the drive member, which forms two in the aximutaler direction opposite locking gusset, each Sperrzwickel is formed by a wall of the pocket and a portion of the circumferential toothing.
- the section of the wall of the pocket extends in such an inclined or curved relative to the peripheral teeth that an imaginary extension of the pocket wall intersects the peripheral teeth.
- a contact edge of the locking body is supported, which extends in a wedge shape to the locking teeth.
- the output member is each freely rotatable in a freewheeling direction and locked in a reverse direction.
- the locking member is pressed in a torque application of the output member in the reverse direction by engaging in the circumferential teeth teeth of the ratchet teeth in the respective Sperrzwickel.
- the abutment edge of the blocking body is located on the wall of the locking gusset.
- the two switching elements shift articulated to each other, so that in an intermediate position in which engages the curved surface of the switching punch at the free ends of the switch projections, both locking teeth of the locking body are simultaneously in meshing the peripheral teeth.
- the switching elements When switching the shift punch displaced in a radial direction with respect to the axis of rotation of the switching element and thereby biases the switching spring.
- the switching elements In its plane of movement, which runs perpendicular to the axis of rotation, the switching elements have a substantially L-shaped contour, wherein an L-leg forms an arm which forms the locking toothing and the abutment edge and forms a substantially transversely extending arm of the other L-leg of the switch extension.
- the shift extension forms an arm with longitudinal sides facing away from one another, which merge into one another at their ends, forming a curve or a point. These end portions of the longitudinal edges of the switch extensions are acted upon by the control edge, which is preferably formed by the desired surface of the shift punch.
- the blocking barrier member acts on the longitudinal flank of the locking extension facing away from the locking teeth. From the non-blocking locking member facing the ratchet teeth facing longitudinal edge of the switch extension is applied. This has the consequence that the locking teeth of the non-blocking locking member is acted upon in the direction away from the peripheral teeth and the locking teeth of the blocking locking member is acted upon in the circumferential teeth.
- the two locking members form an overlapping region, in which the interlocking hook projections are arranged.
- the hook projections interlock with one another such that the locking members can pivot from an operating position in which the locking teeth lie on a common circular arc line into another operating position in which the two centers of the locking teeth are spaced from each other. In the operating position, in which the locking gears run on a common circular arc line, the two switching processes are congruent to each other.
- the switch projections are offset from one another in such a way that they can be brought together in a scissor-like manner by a successive movement, wherein the joint is formed by the interlocking hook projections.
- the switching extensions are sections of the overlapping areas.
- FIG. 1 in a perspective view a screwing in
- Fig. 2 is a plan view of the screwing tool
- FIG. 3 enlarges the cutout III in FIG. 2 and breaks open in such a way that the freewheeling mechanism is visible, wherein the freewheeling mechanism assumes such an operating position that an output member 2 can be rotated counterclockwise with respect to a drive member 1;
- Fig. 4 is a view according to FIG. 3, but when switching a
- Fig. 5 is a view according to FIG. 3, in which the freewheel mechanism a
- FIG. 1 shows a first exploded view of the elements of the freewheeling barrier
- FIG. 8 shows a second exploded view of the elements of the freewheeling barrier.
- the screwing tool shown in the drawings has an outer shape as shown and described in DE 10 2014 113 758 AI.
- the screwing tool has an elongated drive member 1 which has a key jaw at a free end and a bearing eye 6 at its opposite free end.
- an annular output member 2 is rotatably mounted with an output profile, which is an internal polygon profile.
- the output member 2 may also have a different shape, for example, form a drive polygon, which then forms the output profile.
- the output member 2 has a peripheral toothing 5 with a plurality of radially outwardly facing teeth whose rectilinear tooth flanks are formed like a roof.
- a pocket which forms two circumferentially opposite locking gusset 17, 27.
- the Sperrzwickel 17, 27 are formed by walls 18, 28 of the pocket, which extend arcuately from a bearing bore for supporting a switching element 3 to the radially inner edge of the bearing eye 6 and whose extension intersects the peripheral teeth 9.
- the locking members 10, 20 are formed symmetrically with respect to each other. They have an L-shape extending in the plane of movement, wherein an L-leg is formed by an arm 19, 29 and a second L-leg by a switch extension 13, 23. The two arms 19, 29 face away from each other.
- the switch extensions 13, 23 adjoin the respective overlapping regions 15, 25 and overlap.
- the two locking members 10, 20 are articulated coupled to each other. For this purpose, they each form a hook projection 32 in the overlapping area 15, 25.
- the two hook projections each engage in a niche.
- the two hook projections 32 have a sufficient play of movement, so that the locking members 10, 20 can pivot against each other.
- the switching extension 13, 23 forms a pointing to the arm 19, 29 longitudinal edge, which merges into a concavity 16, 26, to which a contact edge 12, 22 connects.
- the arm 19, 29 has two longitudinal flanks extending essentially parallel to one another, which merge into one another at the free end 14, 24 of the switch extension 13, 23 to form a curve or a vertex.
- the contact edge 12, 22 goes to form an acute angle in a locking toothing 11, 21 via.
- the locking toothing 11, 21 extends in each case on a circular arc line whose radius corresponds to the radius of the circular arc line along which the circumferential toothing 5 extends.
- the locking toothing 11, 21 extends into the overlapping area 15, 25, in which portions of the switching elements 10, 20, to which the shift extensions 13, 23 belong, lie in the direction of the axis a one above the other.
- the switch projections 13, 23 engage in a switching recess 30, which is a radial opening of a cavity of the switching element 3.
- Within the cavity of the switching element 3 is a switching punch 7, which has a radially outwardly facing curved surface 7 ', which forms a control edge.
- a switching spring 8 is supported on a locking ram 9 and acts on the switching punch 7 in the radial outward direction.
- the detent plunger 9 acts on a detent ball 33, which can engage in one of two detent recesses 31 in order to rotationally inhibit the shifting member 3 in one of its two shift positions.
- the free end 14, 24 of the switching extension 13, 23 forms mutually away facing vertex surfaces on which the switching edge 7 'engages to exert a spring force on the locking member 10, 20.
- the control edge 7 ' acts on a vertex edge of the free end 14 of the switch extension 13 in the direction of the Sperrzwickels 17.
- the control edge 7' acts on the facing away from the ratchet teeth 11 longitudinal edge of the switch extension 13 at.
- the control edge 7 engages on a vertex edge of the free end 24 of the switching member 20 so that the ratchet teeth 21 of the locking member 20 does not engage in the peripheral teeth 5. If a torque is applied counterclockwise to the output member 2, then the locking member 10 can move in the direction of the Sperrzwickel 17, wherein the abutment edge 12 slides along the wall 18 and the ratchet 11 is separated from the peripheral teeth 5, so that the output member 2 can be rotated freely relative to the drive member 1.
- the switching member 3 is rotated clockwise, wherein the free end 14, 24 of the switch extension 13, 23 of the locking member 10, 20 slides on the control edge 7 'along.
- the apex regions of the ends 14, 24 are acted upon by the control flank 7 'in such a way that the blocking members 10, 20 shift in an articulated manner relative to one another.
- both locking teeth 11, 21 engage in the circumferential toothing 5.
- the two locking members 10, 20 pivot about their hinge connection, which are formed in the embodiment of the two interlocking hook projections 32 until the switch extensions 13, 23 occur in a congruent covering position.
- the shifting member 3 shifts further in the clockwise direction for switching and engages now facing away from the ratchet teeth 21 longitudinal edge of the arm 29 of the locking member 20 and the locking teeth 11 toward longitudinal edge of the arm 19 of the locking member 10.
- This is again a joint-like relative displacement of the two locking members 10, 20 to each other.
- the blocking toothing 11 of the locking member 10 emerges from the circumferential toothing 5.
- the locking member 20 In the end position, the locking member 20 is acted upon by the force of the switching spring 8 in the associated Sperrzwickel 27, so that the abutment edge 22 is supported on the wall 28 of the Sperrzwickels 27 and the locking teeth 21 of the locking member 20 engages in the peripheral teeth 5 ,
- the locking toothing 11 of the locking member 10, which exercises a non-locking function in this switching position, is located outside the circumferential toothing 5 (see FIG. 5).
- the two locking members 10, 20 are designed so that the two locking teeth 11, 21 extend along the same circular arc, when the two switching projections 13, 23 overlap each other.
- the control edge 7 acts on the vertex areas of the switch projections 13, 23 not in an overlay position such that the locking members 10, 20 pivot against each other in such a way that the two switch extensions 13, 23 occupy an overtight position in an intermediate position a further pivoting of the switching element 3 but again shift from the covered position in a Seaüberdecktlage.
- a screwing tool which is characterized in that the locking members 10, 20 are two mutually displaceable body.
- a screwing tool which is characterized in that the locking members 10, 20 can articulate against each other, wherein the locking teeth 11, 21) of each locking member 10, 20 has teeth in a Tongue engaged position in the peripheral teeth 5 on a circular arc line about the axis a.
- a screwing tool which is characterized in that the locking members 10, 20 each have a switching extension 13, 23, which protrude into the same Wegaus originallyung 30 of a switching element 3.
- a screwing tool which is characterized in that the switch extensions 13, 23 are acted on by a spring-loaded control flank 7 'in such a way that in the two switch positions in which the rotatability of the output member 2 with respect to the drive member 1 in each case Locked other direction of rotation, only one of the two locking teeth 11, 21 is engaged in the peripheral teeth 5.
- a screwing tool which is characterized in that when switching the switching element 3 in an intermediate position, both locking teeth 11, 21 are simultaneously in engagement with the circumferential toothing 5.
- a screwing tool which is characterized in that the switching member 3 for directional switching of the Freilaufgesperres by displacing the locking members 10, 20 in aximu taler direction relative to the axis a of a Sperrzwickel 17 in a this opposite aximutaler direction Sperrzwickel 27 in one a rotation of the switching member 3 enabling drilling tion of the drive member 1 rests, wherein the Sperrzwickel 17, 27 of contact flanks 12, 22 and portions of the peripheral teeth 5 are formed.
- a screwing tool which is characterized in that the two locking members 10, 20 are tied together in an overlapping areas 15, 25 by interlocking hook projections.
- a screwing tool which is characterized in that the switching element 3 has a control edge 7 'forming the switching punch 7, which is acted upon by a switching spring 8.
- a screwing tool which is characterized in that the control flank 7 'forming curved surface of the switching punch 7 at the end 14, 24 of the switch extension 13, 23 engages and / or that the switching spring 8 is supported on a locking punch 9 and a Latching element 33 which engages in the switching position in a latching recess 31.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Braking Arrangements (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Mechanical Operated Clutches (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016101400.1A DE102016101400A1 (de) | 2016-01-27 | 2016-01-27 | Schraubwerkzeug mit richtungsumschaltbarem Freilaufgesperre |
PCT/EP2017/050456 WO2017129402A1 (de) | 2016-01-27 | 2017-01-11 | Schraubwerkzeug mit richtungsumschaltbarem freilaufgesperre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3408055A1 true EP3408055A1 (de) | 2018-12-05 |
EP3408055B1 EP3408055B1 (de) | 2024-04-10 |
Family
ID=57799704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17700402.5A Active EP3408055B1 (de) | 2016-01-27 | 2017-01-11 | Schraubwerkzeug mit richtungsumschaltbarem freilaufgesperre |
Country Status (7)
Country | Link |
---|---|
US (1) | US10828751B2 (de) |
EP (1) | EP3408055B1 (de) |
JP (1) | JP2019508267A (de) |
CN (1) | CN108698210B (de) |
DE (1) | DE102016101400A1 (de) |
TW (1) | TWI712470B (de) |
WO (1) | WO2017129402A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2556449B (en) * | 2017-10-16 | 2018-10-24 | William Hackett Lifting Products Ltd | Dual pawl having two pawl arms rotatable about a common axis |
DE102018131903A1 (de) | 2018-12-12 | 2020-06-18 | Wera Werkzeuge Gmbh | Als Knarre verwendbarer Drehmomentschlüssel |
TWI710430B (zh) * | 2019-11-07 | 2020-11-21 | 優鋼機械股份有限公司 | 棘輪扳手之撥動件結構 |
CN110815104A (zh) * | 2019-11-18 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | 摇转高压转子用扳杆 |
USD1007985S1 (en) * | 2020-09-30 | 2023-12-19 | Re-Dai Precision Tools Co., Ltd. | Switcher of reversible ratchet wrench |
USD1000922S1 (en) * | 2021-01-07 | 2023-10-10 | Chia-Yu Chen | Switch knob for ratchet wrench |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5467672A (en) * | 1992-04-20 | 1995-11-21 | Ashby; Earl T. | Open end ratchet wrench |
GB2387135B (en) * | 2002-04-05 | 2005-02-23 | Chyi Hong Chen | Ratchet box wrench |
CN1456418A (zh) * | 2002-05-09 | 2003-11-19 | 谢世揆 | 改良型梅花扳手的单向制动装置 |
US6584875B1 (en) * | 2002-07-09 | 2003-07-01 | Jackson Deng | Ratchet wrench |
TW554786U (en) * | 2003-01-17 | 2003-09-21 | Mu-Lin Chen | Improved ratchet wrench structure |
TWM250758U (en) * | 2003-11-27 | 2004-11-21 | Bing-Wen Huang | Improved structure for socket ratchet wrench |
TWI252143B (en) * | 2004-05-19 | 2006-04-01 | Hou-Fei Hu | Three-stepped ratchet wrench |
US7073412B1 (en) * | 2004-10-12 | 2006-07-11 | Easco Hand Tools, Inc. | Method of forming a pawl pocket for a ratcheting tool and tool thereby formed |
US7096763B1 (en) | 2005-02-18 | 2006-08-29 | Chih-Ching Hsieh | Direction control device of ratchet spanner |
US7987747B2 (en) * | 2007-04-05 | 2011-08-02 | Snap-On Incorporated | Bias assembly for ratchet tools |
TW201004745A (en) * | 2008-07-24 | 2010-02-01 | Hou-Fei Hu | Slipping type direction-change ratchet wrench |
TWM360112U (en) * | 2008-11-26 | 2009-07-01 | gui-quan Zhang | Ratchet wrench structure |
US8567287B2 (en) * | 2009-04-07 | 2013-10-29 | Steve Gapp | Reversible open-ended ratchet wrench |
US8776640B2 (en) * | 2011-12-13 | 2014-07-15 | Bobby Hu | Ratchet wrench preventing jam of pawls |
TW201323159A (zh) | 2011-12-13 | 2013-06-16 | Hou-Fei Hu | 防卡死之棘輪扳手 |
TWI426004B (zh) * | 2012-03-02 | 2014-02-11 | Apex Tool Hk Ltd | Ratchet wrench and body used in ratchet wrench |
US9138875B2 (en) | 2013-04-23 | 2015-09-22 | Yi-Fu Chen | Ratchet tool device |
DE102014113758A1 (de) | 2013-10-15 | 2015-04-16 | Wera-Werk Hermann Werner Gmbh & Co. Kg | Schraubwerkzeug mit richtungsumstellbarem Gesperre |
US10118278B2 (en) * | 2014-05-15 | 2018-11-06 | Snap-On Incorporated | Ratchet wrench including retaining ring |
TWM515935U (zh) * | 2015-09-07 | 2016-01-21 | gui-quan Zhang | 組合式棘輪扳手 |
TWI586492B (zh) * | 2016-11-08 | 2017-06-11 | 史丹利七和國際股份有限公司 | 棘輪扳手 |
-
2016
- 2016-01-27 DE DE102016101400.1A patent/DE102016101400A1/de active Pending
-
2017
- 2017-01-11 WO PCT/EP2017/050456 patent/WO2017129402A1/de active Application Filing
- 2017-01-11 EP EP17700402.5A patent/EP3408055B1/de active Active
- 2017-01-11 US US16/072,779 patent/US10828751B2/en active Active
- 2017-01-11 CN CN201780012688.7A patent/CN108698210B/zh active Active
- 2017-01-11 JP JP2018539077A patent/JP2019508267A/ja active Pending
- 2017-01-19 TW TW106101834A patent/TWI712470B/zh active
Also Published As
Publication number | Publication date |
---|---|
WO2017129402A1 (de) | 2017-08-03 |
CN108698210B (zh) | 2021-01-12 |
US20190030689A1 (en) | 2019-01-31 |
EP3408055B1 (de) | 2024-04-10 |
TW201729953A (zh) | 2017-09-01 |
JP2019508267A (ja) | 2019-03-28 |
DE102016101400A1 (de) | 2017-07-27 |
TWI712470B (zh) | 2020-12-11 |
CN108698210A (zh) | 2018-10-23 |
US10828751B2 (en) | 2020-11-10 |
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