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EP0988134A1 - Mandrin de serrage pour embouts ou autres - Google Patents

Mandrin de serrage pour embouts ou autres

Info

Publication number
EP0988134A1
EP0988134A1 EP98928315A EP98928315A EP0988134A1 EP 0988134 A1 EP0988134 A1 EP 0988134A1 EP 98928315 A EP98928315 A EP 98928315A EP 98928315 A EP98928315 A EP 98928315A EP 0988134 A1 EP0988134 A1 EP 0988134A1
Authority
EP
European Patent Office
Prior art keywords
section
torsion
sleeve
chuck according
shaft
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
EP98928315A
Other languages
German (de)
English (en)
Other versions
EP0988134B1 (fr
Inventor
Martin Strauch
Sylvester Rosanwo
André Müller
Werner Tretbar
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
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
Priority claimed from DE19804081.4A external-priority patent/DE19804081B4/de
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Publication of EP0988134A1 publication Critical patent/EP0988134A1/fr
Application granted granted Critical
Publication of EP0988134B1 publication Critical patent/EP0988134B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

  • 00001 chuck for bits or the like 00002 00003 The invention relates to a chuck according to genus 00004 handle of claim 1.
  • 00005 00006 Such a chuck is known from the Ge00007 pattern 90 00 245.8.
  • the known chuck 00008 has a clamping section, by means of which the 00009 chuck can be clamped in an electric screwdriver or the like 00010.
  • the shaft forming this clamping section on one side has on the other side a tool holder for receiving a screwdriver insert or the like.
  • the torque peaks are reduced and 00019 smoothed.
  • the invention is therefore based on the object to improve a 00022 generic chuck functionally.
  • the object is achieved by the invention specified in claims 00025.
  • the torsion section is assigned to the chuck 00028 ter.
  • the torsion link 00032 preferably couples two axially consecutive 00033 sheep sections. These shaft sections can turn 00034 00035 until a torque limit is reached. There are stops provided by 00036 are a gap apart.
  • 00037 cuts are preferably made up of
  • 00039 cuts lie the two ends of the preferably hand
  • 00046 of the torsion member is preferably zylindför ig.
  • a sleeve can be provided which connects the
  • 00055 can also the two sleeve sections up
  • the torsion section can be
  • 00069 consist of the same length of material up to a
  • 00070 section with which the 00071 cutting core is rotatably connected to a shaft section forming the tool holder 00073 00073.
  • the two sleeve-like shaft sections can 00074 butt against each other to form a circumferential joint. This joint can have sloping faces.
  • 00076 The chuck can also be provided with an actuating sleeve 00077, which covers the sleeve.
  • 00078 the mode of operation of the actuating sleeve and the small medium, which is designed as a ball, reference is made to 00080 utility model 90 00 245.8.
  • the sleeves at 00081 are held in an angular position to each other by means of the torsion member in such a way that a 00083 elastic evasibility is possible both in the left and in the 00084 right direction.
  • the torsion link is twisted.
  • 00087 Up to a first limit torque the 00088 chuck behaves like a quasi rigid body.
  • the first 00089 limit torque is defined by the dimensioning and the 00090 pretreatment of the torsion section of the torsion link. If the first limit torque 00092 torque is exceeded, the torsion element yields resiliently, 00093 the torsion section twisting until the 00094 two stops abut one another.
  • FIG. 1 shows an inventive chuck of a first 00104 exemplary embodiment in a view
  • 00106 Fig. 2 shows a section along the line II-II in Fig. 1
  • 00107 00108 Fig. 3 shows a section along the line III-III in Fig. 00109 2
  • Fig. 4 shows an exploded view of the two shaft sections 00112 and the torsion member , 00113 00114 Fig.
  • FIG. 5 is a schematic representation of the torque / torsion curve
  • 00116 00117 Fig. 6 is a representation of a second exemplary embodiment according to Fig. 1
  • Fig. 7 is a section along the line VII-VII in Fig. 00121 6, 00122 00123 Fig. 8 a section along the line VIII-VIII in 00124 Fig. 7 and 00125 00126 Fig. 9 a section along the line IX-IX in Fig. 7.
  • the chuck of the first embodiment be00129 sits a polygonal , in particular hexagonal-shaped clamping section 1, by means of which the chuck 00131 ter can be clamped into a drive element, for example a drilling machine.
  • the end of the savings section 00133 sits in a form-fitting manner both in the direction of rotation and 00134 and in the axial direction in one end of a 00135 sleeve-shaped shaft section 6.
  • 00136 00137
  • the other end of the sleeve-shaped shaft section 6 00138 has a hollow 11, which is a polygonal-shaped, 00139 has a hexagonal profile.
  • a second shaft section 5 is then provided on 00140.
  • 00141 which also has such a profiled cavity 00142 10, which is opposite to the cavity 11.
  • the 00143 shaft section 5 has a tool holder 2, 00144 which also has a polygonal profile, in particular a hexagonal profile 00145 for inserting a bit 18.
  • the 00146 bit 18 has corner recesses in its polygonal section, into which a ball 17 presses around the Hold bit 18 00148 in a tied position in the chuck. 00149 00150
  • the ball 17 can be moved by moving an actuating sleeve 00151 16 into a release point.
  • the 00152 actuation of the actuating sleeve 16 takes place by axially displacing the same against the pressure of a spring 19.
  • 00154 00155 The actuating sleeve 16 overlaps a sleeve 15 which 00156 catches the parting line of the two shaft sections 5, 6 over 00157.
  • the ends of the shaft sections 5, 6 are equipped with extensions 00159 zen 12, 13, which engage in a claw-shaped manner to form a 00160 gap 14, so that a 00161 relative rotation of the two shaft sections 5, 6 by 00162 approx 10 ° in both directions is possible.
  • 00163 00164 A dumbbell-shaped torsion member 7 is inserted into the cavities 10, 11 of the two shaft sections 5, 00165 6.
  • the torsion member 7 has a 00167 cylindrical torsion section 3, which can twist when the torque is applied to 00168.
  • the ends 8, 9 00169 of the torsion member 7 are equipped with a hexagonal profile 00170, which engages in the 00171 cavities 10, 11 essentially without play, so that the torsion member 7 00172 acts as a rotational driving member between the two shaft sections 00173 5, 6.
  • the sleeve 15 is connected to the two 00176 shaft sections 5, 6 via retaining rings 20, the two 00177 shaft sections are axially tied to one another, but can 00178 twist against each other by the angular amount defined by the gap width 00179.
  • 00180 00181 In order to be able to turn the two shaft sections 5, 6 against one another, a certain torque must be applied, which may exceed a first torque Ml 00184.
  • This first torque Ml is determined by 00185 the hardness curve or the pretreatment of the bit 00186. Until then, the chuck twists only slightly by the angle a.
  • the torque 00188 increases, the two shaft sections 5, 6 rotate by 00189 angle W until the second limit torque M2 is reached at a 00190 angular position b.
  • the chuck 00195 then behaves similar to a quasi-rigid body in the low torque range 00196.
  • the tool holder 2 has a cavity which on the bottom 00216 forms a shoulder 21 on which a 00217 edge portion of the end face of the bit 18 can rest 00218.
  • This shoulder is formed by a constriction of the 00219 cavity 10 of the shaft section 5.
  • 00220 00221
  • a magnet is provided between the clamping section 1 and the 00223 end 9 of the torsion element 7, 00224 which is glued, for example, to the torsion element 7, soldered or otherwise fastened.
  • the face 00227 of the bit can rest flat on the other end 8 of the 00228 torsion member 7.
  • the torsion section 3 lies in the area of the joint 00231 of the two shaft sections 5, 6. Also in this area, the cavity has a hexagonal profile.
  • the 00233 diameter of the Torsionsab00234 section 3, which is circular in cross section, is smaller than the clear distance between the 00235 hexagonal surfaces, so that free twisting is possible 00236.
  • the second exemplary embodiment also has a 00239 insertion section 1, but this continues in the same manner as the material 0000 in the torsion section 3 and further 00241 in a profile section 26, by means of which the core formed in this way 00242 rotatably in a cavity 10 of the 00243 forming the tool holder 2 shaft section 5 00244 is inserted.
  • the shaft section 5 is of a sleeve 00245, which also carries a magnet 24,
  • the actuating sleeve 16 has none on the outside
  • 00256 section 5 is another sleeve-shaped
  • This shaft section 6 has
  • the torsion 7 has as in
  • the torsion section 7 has a profile section
  • 00290 sion section 3 is made of hexagon
  • 00297 lies in a profile cavity 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

L'invention concerne un mandrin de serrage pourvu d'une tige (5, 6) présentant, à une extrémité, un segment de fixation (1) permettant la fixation dans un organe d'entraînement et, à l'autre extrémité, une partie de réception d'outil (2) recevant un outil, en particulier un embout de tournevis (18). Pour améliorer le fonctionnement, il est prévu selon l'invention une possibilité de torsion du segment de fixation (1) par rapport à la partie de réception d'outil (2), torsion limitée par butée par un segment de torsion (3) affecté à la tige (5, 6). Le segment de torsion se trouve dans une gaine (6) qui n'est sollicitée par torsion avec transmission de couple de torsion en raison de la limitation de butée qu'une fois un couple de torsion limite atteint.
EP98928315A 1997-06-02 1998-05-23 Mandrin de serrage pour embouts ou autres Expired - Lifetime EP0988134B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19722776 1997-06-02
DE19722776 1997-06-02
DE19804081.4A DE19804081B4 (de) 1997-06-02 1998-02-03 Spannfutter für Bits oder dergleichen
DE19804081 1998-02-03
PCT/EP1998/003058 WO1998055268A1 (fr) 1997-06-02 1998-05-23 Mandrin de serrage pour embouts ou autres

Publications (2)

Publication Number Publication Date
EP0988134A1 true EP0988134A1 (fr) 2000-03-29
EP0988134B1 EP0988134B1 (fr) 2002-01-09

Family

ID=26037010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928315A Expired - Lifetime EP0988134B1 (fr) 1997-06-02 1998-05-23 Mandrin de serrage pour embouts ou autres

Country Status (5)

Country Link
US (1) US6345560B1 (fr)
EP (1) EP0988134B1 (fr)
CN (1) CN1072546C (fr)
AU (1) AU8020098A (fr)
WO (1) WO1998055268A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8109183B2 (en) 2008-06-06 2012-02-07 Black & Decker Inc. Impact resistant tool bit and tool bit holder
US8347750B2 (en) 2007-09-11 2013-01-08 Black & Decker Inc. Transmission and variable radially expanding spring clutch assembly
US8540580B2 (en) 2009-08-12 2013-09-24 Black & Decker Inc. Tool bit or tool holder for power tool
US8955418B2 (en) 2013-03-08 2015-02-17 Black & Decker Inc. Threaded fastener driving tool
CN112550677A (zh) * 2020-12-11 2021-03-26 兰州飞行控制有限责任公司 一种扭转式人工感觉力的启动预载调整结构及方法

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* Cited by examiner, † Cited by third party
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US6684740B2 (en) * 2002-04-26 2004-02-03 Ching Chou Lin Magnetic device for retaining tool members to drivers
EP1513653B1 (fr) * 2002-06-10 2012-09-19 WERA WERK HERMANN WERNER GmbH & Co. KG Mandrin pour la reception d'outils utilisables par rotation autour de leur axe
US7188556B1 (en) * 2004-10-12 2007-03-13 Pilling Weck Incorporated Rotatable hand tool with a torque controller and method
JP5073321B2 (ja) * 2007-03-07 2012-11-14 株式会社マキタ 回転工具のビット取り付け装置
EP2098336A3 (fr) 2008-03-05 2011-10-05 Felo-Werkzeugfabrik Holland-Letz GmbH Support pour insertions de tournevis
TW200950938A (en) * 2008-06-11 2009-12-16 Hou-Fei Hu Chuck for bit
TW201006625A (en) * 2008-08-06 2010-02-16 Hou-Fei Hu Tool chuck for screwdriver
GB2476917B (en) 2008-11-07 2013-10-23 Milwaukee Electric Tool Corp Tool bit with curved shank
USD623036S1 (en) 2008-11-07 2010-09-07 Milwaukee Electric Tool Corporation Insert bit
USD711719S1 (en) 2009-11-06 2014-08-26 Milwaukee Electric Tool Corporation Tool bit
DE102010038211A1 (de) 2010-10-15 2012-04-19 Wera-Werk Hermann Werner Gmbh & Co. Kg Drehmomentübertragungseinrichtung insbesondere in Form eines Spannfutters für Bits
DE102010038210A1 (de) 2010-10-15 2012-04-19 Wera-Werk Hermann Werner Gmbh & Co. Kg Drehmomentübertragungsvorrichtung zur Verwendung mit einem Drehschlagschrauber
DE102011000710A1 (de) 2011-02-14 2012-08-16 Wera-Werk Hermann Werner Gmbh & Co. Kg Drehmomentübertragungseinrichtung in Form eines Bitfutters
US10150205B2 (en) 2012-02-15 2018-12-11 Black & Decker Inc. Fastening tools with floating magnet sleeves
US9227309B2 (en) 2012-02-15 2016-01-05 Black & Decker Inc. Quick change bit holder with ring magnet
US9505108B2 (en) 2012-02-15 2016-11-29 Black & Decker Inc. Bit holder with floating magnet sleeve
US9156147B2 (en) 2012-02-15 2015-10-13 Black & Decker Inc. Quick change bit holder with ring magnet
US9943946B2 (en) 2012-02-15 2018-04-17 Black & Decker Inc. Tool bits with floating magnet sleeves
US9032847B2 (en) 2013-01-11 2015-05-19 Klein Tools, Inc. Multi-bit power driver
USD709343S1 (en) * 2013-08-14 2014-07-22 Shi-Yi Huang Tool sleeve
US10022845B2 (en) 2014-01-16 2018-07-17 Milwaukee Electric Tool Corporation Tool bit
US9561581B2 (en) 2015-01-22 2017-02-07 Shu-Hui Yeh Quick-removal socket tool
USD789761S1 (en) 2015-11-02 2017-06-20 Black & Decker Inc. Torsion bit
TWM551535U (zh) * 2015-12-10 2017-11-11 米沃奇電子工具公司 鑽頭夾具總成
TWI554367B (zh) * 2015-12-18 2016-10-21 陳河田 具快脫反轉結構之起子頭接桿
CN107448155B (zh) * 2017-03-14 2019-05-24 长江大学 一种防止钻头扭矩过大的工具
CN212351801U (zh) 2017-12-01 2021-01-15 米沃奇电动工具公司 用于驱动紧固件的工具头
USD921468S1 (en) 2018-08-10 2021-06-08 Milwaukee Electric Tool Corporation Driver bit
US11491554B2 (en) 2019-07-18 2022-11-08 Apex Brands, Inc. Compact flexible impact bit holder
US12208494B2 (en) 2019-10-01 2025-01-28 Apex Brands, Inc. Ratchet wrench with drive pins
WO2021188164A1 (fr) 2020-03-18 2021-09-23 Apex Brands, Inc. Dispositif d'entraînement à percussion à coin à bande radiale
US11583989B2 (en) 2020-04-03 2023-02-21 Apex Brands, Inc. Multi-start threaded impact driving device
US11235448B1 (en) 2020-09-08 2022-02-01 Apex Brands, Inc. Overload protected impact driving device
US11498191B2 (en) * 2020-09-16 2022-11-15 SHIN YING ENTPR Co., Ltd. Quick-release tool connection rod
DE102022128158A1 (de) * 2022-10-25 2024-04-25 Daysaver Ag Werkzeug-System, umfassend ein erstes Werkzeugbit sowie ein zweites Werkzeugbit

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FR2584644B1 (fr) * 1985-07-11 1987-11-27 Facom Tournevis dynamometrique
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DE4143218C3 (de) 1991-02-27 2003-03-20 Holland Letz Felo Werkzeug Vorrichtung zur Verbindung von Schraubendreher-Einsätzen

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8347750B2 (en) 2007-09-11 2013-01-08 Black & Decker Inc. Transmission and variable radially expanding spring clutch assembly
US8984977B2 (en) 2007-09-11 2015-03-24 Black & Decker Inc. Transmission and variable radially expanding spring clutch assembly
US8109183B2 (en) 2008-06-06 2012-02-07 Black & Decker Inc. Impact resistant tool bit and tool bit holder
US8540580B2 (en) 2009-08-12 2013-09-24 Black & Decker Inc. Tool bit or tool holder for power tool
US8641536B2 (en) 2009-08-12 2014-02-04 Black & Decker Inc. Tool bit or tool holder for power tool
US8955418B2 (en) 2013-03-08 2015-02-17 Black & Decker Inc. Threaded fastener driving tool
CN112550677A (zh) * 2020-12-11 2021-03-26 兰州飞行控制有限责任公司 一种扭转式人工感觉力的启动预载调整结构及方法
CN112550677B (zh) * 2020-12-11 2022-08-30 兰州飞行控制有限责任公司 一种扭转式人工感觉力的启动预载调整结构及方法

Also Published As

Publication number Publication date
CN1072546C (zh) 2001-10-10
US6345560B1 (en) 2002-02-12
CN1259068A (zh) 2000-07-05
EP0988134B1 (fr) 2002-01-09
WO1998055268A1 (fr) 1998-12-10
AU8020098A (en) 1998-12-21

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