EP0134975B1 - Mandrin pour la fixation de pièces d'un outil, notamment d'un tournevis - Google Patents

Mandrin pour la fixation de pièces d'un outil, notamment d'un tournevis Download PDF

Info

Publication number
EP0134975B1
EP0134975B1 EP84107851A EP84107851A EP0134975B1 EP 0134975 B1 EP0134975 B1 EP 0134975B1 EP 84107851 A EP84107851 A EP 84107851A EP 84107851 A EP84107851 A EP 84107851A EP 0134975 B1 EP0134975 B1 EP 0134975B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
ball
lobe
wing
spring
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.)
Expired
Application number
EP84107851A
Other languages
German (de)
English (en)
Other versions
EP0134975A1 (fr
Inventor
Karl Lieser
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
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Priority to AT84107851T priority Critical patent/ATE29977T1/de
Publication of EP0134975A1 publication Critical patent/EP0134975A1/fr
Application granted granted Critical
Publication of EP0134975B1 publication Critical patent/EP0134975B1/fr
Expired legal-status Critical Current

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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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/904—Quick change socket
    • Y10S279/905—Quick change socket with ball detent
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17666—Radially reciprocating jaws
    • Y10T279/17692—Moving-cam actuator
    • Y10T279/17743—Reciprocating cam sleeve
    • Y10T279/17752—Ball or roller jaws
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17811—Reciprocating sleeve
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means

Definitions

  • the invention relates to a chuck for non-circular shaft ends of tool inserts, in particular screwdriver bits, with a sleeve corresponding to the non-circular cross-section in its cavity and a ball acting on the shaft, which is assigned a sleeve which is displaceable against spring action in such a way that one towards the free end downward wedge-shaped clamping surface presses on the ball, the sleeve which can be shifted to the release position in the insertion direction of the shaft receives the ball in a projecting wing and the clamping surface sits on the inner flank of an end ring comprising the edge of the sleeve and the wing.
  • the sleeve can only be displaced in the longitudinal direction of the chuck due to its connection to the wing and rotates with the rotation of the sleeve. Furthermore, only a limited torque can be transmitted to the tool insert with the known chuck, since the mechanical fixing of the insert shank is only designed for normal load cases due to the wing extending to the lower edge of the chuck.
  • the object of the invention is based on the object of developing a chuck of this type in such a way that, with the same size, a higher torque can be transmitted with improved adjustment and handling.
  • the sleeve is provided with a recess which is delimited near the opening of the cavity by an annular zone, the inner surface of which corresponds to the inner surface of the other cavity, that the wing is slidably guided in the recess, which is relatively represents part movable to the sleeve, wherein the wing is acted on the one hand by the spring and that on the other hand stops are provided such that the wing can be moved by the sleeve against the force of the spring.
  • a chuck is specified, which is distinguished on the one hand by a more stable design and on the other hand by improved handling.
  • the wing has an outwardly directed tab which engages over an inwardly directed shoulder of the sleeve and forms part of the support surface for the sleeve spring.
  • the shoulder takes the tab and thus the wing, the ball of which comes into a release position.
  • the sleeve spring After releasing the sleeve, the sleeve spring returns the sleeve and the wing to the basic position. The assembly can be carried out very easily. For the time being, the sleeve spring is pushed onto the sleeve.
  • the wing is inserted in such a way that part of the sleeve spring is supported on the outwardly directed tab of the wing.
  • the sleeve is to be pushed open at this point and the end ring is to be clamped.
  • the chuck has a bushing 1 continuing at its upper end into a clamping pin 2. From the free end 1 'of the bushing 1, a hollow 3 with a non-circular cross section is incorporated. In the present case, it is a hexagonal cross section which is adapted to that of the shaft 4 of a screwdriver bit 5. Regarding the latter, it is one for Phillips screws.
  • the end 1 'of the sleeve 1 opposite the clamping shaft 2 is stepped.
  • a shoulder 6 is produced, on which one end of a helical compression spring 7 supported on the end 1 'is supported.
  • the other end of this finds a stop on an inwardly directed shoulder 8 of a sleeve 9 which is arranged on the bush 1 both longitudinally displaceably and rotatably.
  • a part of the supporting surface for this other end of the helical compression spring 7 is formed by a outwardly directed tab 20 of a wing 10 ", which According to the flap 20, spring loading occurs against the shoulder 8.
  • the latter connects two guide surfaces F and F 1 of the sleeve 9 of different sizes.
  • One guide surface F 1 slides on the stepped end 1 'of the sleeve, while the other guide surface F crosses the larger part the can includes.
  • the wing 10 ′′ coupled with the sleeve 9 is designed in the form of a segment in cross section in such a way that its inner flat surface 10 ′ is flush with a flank of the cavity 3.
  • the end 1 ′ of the bush 1 is provided with a recess 11 ′. provided so that the wing 10 "with the remaining cross-section of the end 1 'at the same height complements to a circular shape, see Fig. 4.
  • the length of the recess 11' is greater than the length of the wing 10".
  • the recess 11 ' ends at a distance from the free end edge of the end 1', so that the sleeve 1 forms a ring zone Z which has a cross-section beyond the wing 10 ".
  • wing 10 ′′ there is a bearing bore 12 arranged transversely to the longitudinal direction of the sleeve 9 for receiving a ball 13.
  • the diameter of the ball 13 is larger than the thickness of the wing 10 ′′ lying in the radial direction. Falling out of the ball 13 from the bearing bore 12 is prevented by an inward edge R. However, it is ensured that the ball 13 has sufficient play in the radial direction.
  • the inner flank 3 'of the ring zone Z has a polygonal shape, in an angular position to the polygonal surfaces of the cavity 3, so that this also gives an enlarged contact surface for the shaft 4 of the screwdriver bit 5.
  • the end ring 14 forms an inner clamping surface 15 which slopes in a wedge shape towards the free end and with which it presses against the ball 13.
  • the clamping surface 15 continues via a step 16 into a cavity 17 which is adapted to the outer circumference of a stepped free end 9 'of the sleeve 9 while allowing the sleeve 9 to move freely.
  • the shoulder 8 of the sleeve 9 acts on the tab 20 of the wing 10 ′′ and takes it with the ball 13 therein, which then comes out of the clamping position between the clamping surface 15 and the shaft 4, see FIG. 5.
  • the screwdriver bit 5 can If the screwdriver bit 5 has been removed, the compression spring 7 returns the sleeve together with the wing 10 "to the basic position, the sleeve 9 stepping against the upper end edge 14 'of the end ring 14 with a step 18'.
  • the tab 20 then acts on the shoulder 8.
  • the wing When the screwdriver bit 5 is inserted, the wing can still be displaced by a certain amount within the recess 11 'in the direction of the ring zone Z with the effect of a re-tensioning effect. Accordingly, when the screwdriver bit 5 is inserted, the tab 20 also lies at a short distance in front of the shoulder 8 of the sleeve 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Drilling Tools (AREA)

Claims (3)

1. Mandrin de serrage pour des embouts non circulaires d'outils insérables, notamment de tiges de tournevis, comportant une douille (1) dont la cavité (3) intérieure correspond à la section non circulaire et une bille (13) agissant sur la tige (4) et associée à un manchon (9) mobile à l'encontre de la force d'un ressort, de façon telle que la surface de serrage effilée vers l'extrémité libre selon un tracé conique appuie sur la bille (13), tandis que le manchon (9) mobile dans la direction d'insertion de la tige (4), afin de parvenir dans la position de dégagement, reçoit la bille (13) dans une patte (10") saillante et que la surface de serrage est située sur le flanc intérieur d'une bague terminale (14) entourant le bord de la douille (1) et ladite patte (10"), caractérisé en ce que la douille (1) présente un évidement (11') limité à proximité de l'orifice de la cavité (3) par une zone annulaire (Z), dont la surface intérieure correspond à la surface intérieure du restant de la cavité (3), en ce que dans l'épaulement (11') ladite patte (10"), qui est constituée par un élément mobile par rapport audit manchon (9), est guidée de manière glissante et est d'une part sollicitée, par le ressort (7), tandis que, d'autre part, des butées (épaulement 8, épaulement 20) sont prévues et agencées de façon telle que la patte (10") soit déplaçable par le manchon (9) à l'encontre de la force du ressort (7).
2. Mandrin de serrage selon la revendication 1, caractérisé en ce que la patte (10") comporte un épaulement (20) dirigé vers l'extérieur et surmontant un épaulement (8) dirigé vers l'intérieur du manchon (9), l'épaulement (20) formant une partie de la surface d'appui du ressort (7) associé au manchon.
EP84107851A 1983-08-24 1984-07-05 Mandrin pour la fixation de pièces d'un outil, notamment d'un tournevis Expired EP0134975B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107851T ATE29977T1 (de) 1983-08-24 1984-07-05 Spannfutter fuer werkzeug-einsatzstuecke, insbesondere schraubendreherbits.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833330486 DE3330486A1 (de) 1983-08-24 1983-08-24 Spannfutter fuer werkzeug-einsatzstuecke, insbesondere schraubendreherbits
DE3330486 1983-08-24

Publications (2)

Publication Number Publication Date
EP0134975A1 EP0134975A1 (fr) 1985-03-27
EP0134975B1 true EP0134975B1 (fr) 1987-09-30

Family

ID=6207295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107851A Expired EP0134975B1 (fr) 1983-08-24 1984-07-05 Mandrin pour la fixation de pièces d'un outil, notamment d'un tournevis

Country Status (4)

Country Link
US (1) US4629375A (fr)
EP (1) EP0134975B1 (fr)
AT (1) ATE29977T1 (fr)
DE (2) DE3330486A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381830B2 (en) 2009-05-05 2013-02-26 Black & Decker Inc. Power tool with integrated bit retention device
US8800999B2 (en) 2009-02-27 2014-08-12 Black & Decker Inc. Bit retention device

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DE3538675A1 (de) * 1985-10-31 1987-05-07 Werner Hermann Wera Werke Schraubendrehereinsatz
SE450223B (sv) * 1986-04-17 1987-06-15 Johan Rosenlund Adapter for anslutning av en verktygsspets till en drivanordning
US4818157A (en) * 1986-12-31 1989-04-04 James E. Scapillato Quick-change adapter and tools for use with the adapter
FR2629376B1 (fr) * 1988-04-01 1994-04-29 Prospection & Inventions Porte-outil de foreuse, en particulier pour foret avec ou sans rainure d'entrainement
DE9000245U1 (de) * 1990-01-11 1991-05-16 Wera-Werk Hermann Werner Gmbh & Co, 5600 Wuppertal Spannfutter für mehrkantige Schaftenden von Werkzeugen
DE4037791C1 (fr) * 1990-11-28 1992-08-06 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
DE4243650C2 (de) * 1992-12-23 1996-07-25 Schmidt Ulrich Ush Schraubwerk Spannfutter für Werkzeug-Einsatzstücke
DE4417210A1 (de) * 1994-05-17 1995-11-23 Optigrip Werkzeuge Körper zum Festhalten von Werkzeug
DE9411520U1 (de) * 1994-07-15 1995-11-16 wolfcraft GmbH, 56745 Weibern Bit-Schrauber
US5417527A (en) * 1994-08-12 1995-05-23 Wienhold; James L. Quick change chuck assembly for tool bits
US5638727A (en) * 1995-02-01 1997-06-17 Allway Tools, Inc. Plastic screwdriver with retaining ring
US5678961A (en) * 1995-05-11 1997-10-21 Fleege; Dennis W. Quick change adapter
USD380069S (en) * 1995-10-23 1997-06-17 Waxing Corporation Of America, Inc. Detailing polisher
US5664634A (en) * 1995-10-23 1997-09-09 Waxing Corporation Of America, Inc. Power tool
US5722805A (en) * 1995-12-08 1998-03-03 Giffin; Brian K. Drill bit adaptor tool
DE19610213C2 (de) * 1996-03-15 1998-11-19 Schmidt Ulrich Ush Schraubwerk Spannfutter mit Bogenstück
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USD424075S (en) * 1998-06-26 2000-05-02 Black & Decker Inc. Collar for tool bit holder
WO2000027574A1 (fr) * 1998-11-12 2000-05-18 Black & Decker Inc. Mandrin, meche, assemblage de ces derniers et procedes de montage
EP1769868B1 (fr) * 1998-11-12 2012-08-01 Black & Decker, Inc. Mandrin et procédé d'assemblage de ce dernier
US6260857B1 (en) 1999-01-06 2001-07-17 James L. Wienhold Quick-change three-jaw drill chuck
CN1262375C (zh) 1999-07-21 2006-07-05 布莱克-德克尔公司 动力驱动夹头
CN1204988C (zh) 1999-07-21 2005-06-08 布莱克-德克尔公司 动力驱动夹头
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US6561523B1 (en) 1999-11-18 2003-05-13 James L. Wienhold Automatic tool-bit holder
WO2001060555A1 (fr) 2000-02-14 2001-08-23 Black & Decker Inc. Mandrin et ensemble dote de meche
US6688610B2 (en) 2000-05-12 2004-02-10 Power Tool Holders Incorporated Chuck with quick change
US6588994B2 (en) 2000-05-17 2003-07-08 James L. Wienhold Drill bit tail
US6722667B2 (en) * 2000-06-09 2004-04-20 Jore Corporation Workpiece connector for a power tool
US6533291B2 (en) 2001-02-14 2003-03-18 Power Tool Holders Incorporated Chuck having quick change mechanism
DE10141668A1 (de) * 2001-08-25 2003-03-06 Werner Hermann Wera Werke Spannfutter für Werkzeuge, insbesondere Schraubendreherbits
US6834864B2 (en) 2001-10-24 2004-12-28 Power Tool Holders Incorporated Chuck having quick change mechanism
US6929266B2 (en) * 2002-06-18 2005-08-16 Black & Decker Inc. Bit holder
US6863280B2 (en) * 2002-11-20 2005-03-08 Li Jiun Chiu Tool fixing structure
DE10337470A1 (de) * 2003-08-14 2005-03-17 Atlas Copco Electric Tools Gmbh Spanneinrichtung für Sechskantbits
US20060145431A1 (en) * 2003-12-01 2006-07-06 Chang Sheng M Tool connecting device
US20050116429A1 (en) * 2003-12-01 2005-06-02 Sheng-Ming Chang Fast and convenient operation structure of a screwdriver head socket
US7726664B2 (en) * 2005-12-29 2010-06-01 Black & Decker Inc. Universal tool bit shank
TW200831243A (en) * 2007-01-19 2008-08-01 Hou-Fei Hu Screwdriver joint with stepless locking
US20090174157A1 (en) * 2008-01-08 2009-07-09 Hsin Ying Enterprise Co., Ltd. Tool connecting device
TW200950934A (en) 2008-06-11 2009-12-16 Hou-Fei Hu Chuck for bit
TW200950938A (en) * 2008-06-11 2009-12-16 Hou-Fei Hu Chuck for bit
CN101607389B (zh) * 2008-06-18 2010-12-15 胡厚飞 起子头的接杆
CN101607388B (zh) * 2008-06-18 2012-05-30 胡厚飞 起子头的接杆
US8622401B2 (en) 2009-02-27 2014-01-07 Black & Decker Inc. Bit retention device
US8550471B2 (en) * 2010-07-28 2013-10-08 New Way Tools Co., Ltd. Tool bit holder
US9636815B2 (en) * 2011-02-23 2017-05-02 Hilti Aktiengesellschaft Tool receptacle
US8690164B2 (en) * 2011-10-06 2014-04-08 Ji-Fen Meng Tool bit assembly for quickly alternating bits
US9227309B2 (en) 2012-02-15 2016-01-05 Black & Decker Inc. Quick change bit holder with ring magnet
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
US10150205B2 (en) 2012-02-15 2018-12-11 Black & Decker Inc. Fastening tools with floating magnet sleeves
US9505108B2 (en) 2012-02-15 2016-11-29 Black & Decker Inc. Bit holder with floating magnet sleeve
EP2689895B1 (fr) * 2012-07-27 2017-03-08 Black & Decker Inc. Dispositif de rétention de foret
DE102014208050A1 (de) * 2014-04-29 2015-10-29 Siemens Aktiengesellschaft Schrauberklinge, Schrauber und Verfahren zum selbständigen Einfädeln einer Schrauberklinge
US9579731B2 (en) * 2015-07-29 2017-02-28 Kaarle Homola Drill chuck assembly
USD789761S1 (en) 2015-11-02 2017-06-20 Black & Decker Inc. Torsion bit
US10821522B2 (en) 2017-04-05 2020-11-03 Giffin Tec, Inc. Drill bit adapter tool
USD821842S1 (en) * 2017-05-16 2018-07-03 Shao-Hsien HSU Tool bit
WO2019046991A1 (fr) * 2017-09-05 2019-03-14 慈溪市诚佳五金工具有限公司 Tournevis
USD966358S1 (en) 2018-08-06 2022-10-11 Giffin Tec, Inc. Drill bit adapter
USD867753S1 (en) 2018-08-06 2019-11-26 Giffin Tec, Inc. Tool holster
TWM594510U (zh) * 2019-05-23 2020-05-01 鑽全實業股份有限公司 工具轉接頭快拆結構
US11426846B2 (en) * 2020-04-09 2022-08-30 Ningbo Hony Plastic Technology Co., Ltd Quick-release screwdriver structure
USD955453S1 (en) * 2020-10-01 2022-06-21 Shukla Medical Drill bit
JP1757998S (ja) * 2021-10-13 2023-11-21 ドリルビット
JP1745655S (ja) * 2021-10-13 2023-06-06 ドリルビット
USD987696S1 (en) * 2021-10-14 2023-05-30 Epstein Industrial Supply. Inc. Drill bit
JP1724557S (ja) * 2022-05-09 2022-09-12 電動ドライバ本体
JP1724556S (ja) * 2022-05-09 2022-09-12 電動ドライバ本体
JP1724558S (ja) * 2022-05-09 2022-09-12 電動ドライバ本体

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8800999B2 (en) 2009-02-27 2014-08-12 Black & Decker Inc. Bit retention device
US8381830B2 (en) 2009-05-05 2013-02-26 Black & Decker Inc. Power tool with integrated bit retention device

Also Published As

Publication number Publication date
DE3330486A1 (de) 1985-03-07
ATE29977T1 (de) 1987-10-15
EP0134975A1 (fr) 1985-03-27
DE3466486D1 (en) 1987-11-05
US4629375A (en) 1986-12-16
DE3330486C2 (fr) 1992-04-09

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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