EP1157790B1 - Werkzeugaufnahme für einen Bohrmeissel - Google Patents

Werkzeugaufnahme für einen Bohrmeissel Download PDF

Info

Publication number
EP1157790B1
EP1157790B1 EP01810479A EP01810479A EP1157790B1 EP 1157790 B1 EP1157790 B1 EP 1157790B1 EP 01810479 A EP01810479 A EP 01810479A EP 01810479 A EP01810479 A EP 01810479A EP 1157790 B1 EP1157790 B1 EP 1157790B1
Authority
EP
European Patent Office
Prior art keywords
tool
radially
control sleeve
tool holder
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 - Lifetime
Application number
EP01810479A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1157790A1 (de
Inventor
Jens Frenzel
Helmut Nussrainer
Uto Plank
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP1157790A1 publication Critical patent/EP1157790A1/de
Application granted granted Critical
Publication of EP1157790B1 publication Critical patent/EP1157790B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • 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
    • Y10T279/17042—Lost motion
    • Y10T279/17076—Spreading elements
    • 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
    • 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
    • Y10T279/17786—Spring

Definitions

  • the invention relates to a tool holder for a drill bit, advantageously connectable with an at least partially striking hand tool, such as a hammer drill or a chisel hammer.
  • This invention contemplates tool holders of at least partially striking hand tools. Introduced for appropriate use in such a tool holder of the power tool tool is rotatably and limited axially movably received in this.
  • radially movable engagement elements of the tool holder engage in radial recesses in the clamping area of the shank of the tool and limit the axial mobility to a region predetermined by the axial length of the recesses.
  • a transmission of the torque takes place.
  • the impact of the hand tool device takes place directly on the axial end face of the tool and thus not on the tool holder.
  • DE19636293A1 has a tool holder for a limited axially movable over along the tool axis finite radial recesses recordable tool radially movable engagement elements which engage positively in the radial recesses and on a externally operable, axially resiliently biased by a locking spring sliding, control sleeve are releasable.
  • a resilient retaining element for the respective end position of the movable between the engagement position and the release position control sleeve is additionally provided, which is arranged between the control sleeve and the clamping region of the shank of the tool.
  • a bistable state of the tool holder is formed in the engaged position and in the release position, whereby a change of the tool with one hand is possible.
  • the tool holder is first brought into the release position and then changed the tool, wherein upon insertion of the replaced tool, the holding member releases the control sleeve, which automatically merges into the engaged position.
  • the tool holder for a rotationally fixed rotationally positive driving elements and limited axially movable over along the tool axis finite radial recesses of the Einspann Schemees of the shaft recordable tool radially movable engagement elements which engage positively in the radial recesses and biased by an externally actuated, axially resilient slidable, control sleeve are detachable.
  • An arranged between the control sleeve and the clamping portion of the shaft of the tool resilient holding element in the form of a radially resilient leaf spring or a radially spring-mounted ball holds against introduced the retaining spring force of the holding element tool via a radially movable and engaging in the control sleeve locking means the control sleeve in the release position , Thus, an axial displacement of the control sleeve over the locking means away is prevented.
  • the holding element immediately after removal of the tool relaxes the holding element and the control sleeve jumps back into the locking position.
  • the changed tool presses on the locking elements with an axial constraint, the control sleeve partially in the direction of holding position but without reaching them.
  • the locking elements engage radially in the recesses, release the axial constraint on the control sleeve and this jumps through the prestressed locking spring in the locking position, in which the locking elements are locked radially form-fitting manner.
  • control sleeve is formed in a flange shape, wherein the tool facing part is radially coaxially from a front sleeve and the adjacent radially beyond a smooth grading, the hand tool facing part with a radially larger diameter from the outside operable, in particular directly by hand in the direction Hand tool is axially displaceable.
  • control sleeve forms a radially ausrestoryen web as a stop for a locking spring, which is pressure-biased against a positioned in the direction of the hand tool unit axial stop.
  • a locking spring which is pressure-biased against a positioned in the direction of the hand tool unit axial stop.
  • an axially freely movable control sleeve is automatically moved into the locking position and forms with parts of its inner circumferential surface at least partially a radial positive stop for the radially movable locking elements.
  • the locking elements are also advantageous in addition to other locations of the tool holder radially form-fitting manner.
  • the locking elements can form a one-sided axial constraint on the control sleeve with parts of their end faces oriented in the direction of the hand tool device, advantageously on the radially branching web.
  • the four-locking elements engage via radially outwardly oriented projections in recesses of the control sleeve and are thus connected in a form-fitting, movable manner with the latter in an axially movable manner.
  • the holding element is advantageously formed in a first embodiment as axially auskargende, radially resilient leaf spring, which advantageously has an at least partially circumferential circumferential attachment part.
  • the holding element has a radially inner contact point to the clamping region of the shank of an inserted tool for controlling the holding element and a radially outer latching means for holding the control sleeve.
  • the retaining element radially movable latching means is advantageously formed as an angled on both sides chamfered nose at the end of the axially auskargenden, radially resilient part of the leaf spring.
  • the locking means can be displaced radially by an axial displacement of the control sleeve against the bias of the retaining element.
  • the radially auskargende part of the leaf spring is advantageously designed folded over in the radial direction, whereby the Garfederweg the locking means is increased.
  • the holding element is designed as a spring-mounted ball, which can serve by a circumferentially and axially and limited radially movable opening of the tool holder in contact with the clamping area of the shank of a tool inserted into the tool holder.
  • the radially outwardly projecting dome of the spring-mounted ball forms a two-sided bevel, which is assigned as a corresponding retaining spring advantageously a radially resilient, radially inwardly beveled on both sides sleeve spring axially movable, wherein the sleeve spring is advantageously connected to the control sleeve.
  • Fig. 1b has a tool holder 1 for a rotatably lubformschlüssige entrainment elements 2 and axially movable limited along the tool axis finite radial recesses 3 of the clamping portion of the shaft recorded tool 4 radially movable engagement elements on, which engage positively in the radial recesses 3 and a directly externally by hand operable, axially resiliently biased sliding, control sleeve 6 are releasable.
  • the flange-shaped control sleeve 6 is in the engaged position. 7
  • a resilient retaining element 8 in the form of a radially resilient leaf spring which with imported tool 4 against the retaining spring force of the retaining element 8 via a radially movable and engaging in the control sleeve 6 locking means 9, the control sleeve 6 in the axially displaced from the engagement position 7 release position 10 holds.
  • the radially movable engagement elements 5 are movable axially positively connected via engaging in recesses 11 of the control sleeve 6 extensions 12 of the engagement elements 5 and were moved with this axially from the engaged position 7.
  • a connected to the control sleeve 6, radially auskargenden web 13 as a stop for a pressure-biased locking spring 14 is held by the locking means 9 in the release position 10.
  • Fig. 5a and the offset by 90 ° cut Fig. 5b is moved directly from the locking position 7 in the direction of the release position 10 immediately at the tool holder by the force exerted by the male tool 4 on the locking elements 5 on the control sleeve 6 axial compulsion, without to achieve this.
  • the locking means 9 of the holding element 8 is not in the, an axial displacement inhibiting, holding position with respect to the web 13 of the control sleeve 6 passes.
  • the holding member 8 is formed as a ball, which by a circumferentially and axially and limited radially movable opening of the tool holder 1 in contact with the clamping area of the shank of the tool holder inserted tool 4 is used, wherein the radially outwardly projecting dome 15 of the ball forms a chamfer on both sides, which is associated with a radially resilient, radially inside chamfered on both sides sleeve spring 16 axially movable, wherein the sleeve spring is connected to the control sleeve 6.
  • an axial movement of the located in the release position 10 control sleeve 6 is inhibited in the direction of locking position 7.
  • the holding element 8 is formed as an axially auskargende, radially resilient leaf spring, which has an at least partially circumferential circumferential fixing member 17, a radially inner contact point 18 to the clamping region of the shaft of an inserted tool for controlling the control sleeve and a radially outer latching means 9 for holding the control sleeve.
  • the holding element 8 radially movable latching means 9 is angled on both sides chamfered nose at the end of the axial auskargenden, radially resilient part of the leaf spring.
  • the radially auskargende part of the leaf spring is executed folded over in the radial direction.
  • control sleeve 6 is connected to the holding spring sleeve 16 in variant II, which has two-sided chamfers 19 in the region of engagement of the dome of the ball.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP01810479A 2000-05-25 2001-05-15 Werkzeugaufnahme für einen Bohrmeissel Expired - Lifetime EP1157790B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10026021A DE10026021A1 (de) 2000-05-25 2000-05-25 Werkzeugaufnahme für einen Bohrmeissel
DE10026021 2000-05-25

Publications (2)

Publication Number Publication Date
EP1157790A1 EP1157790A1 (de) 2001-11-28
EP1157790B1 true EP1157790B1 (de) 2008-01-02

Family

ID=7643595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810479A Expired - Lifetime EP1157790B1 (de) 2000-05-25 2001-05-15 Werkzeugaufnahme für einen Bohrmeissel

Country Status (5)

Country Link
US (1) US6543789B2 (zh)
EP (1) EP1157790B1 (zh)
JP (1) JP4758565B2 (zh)
CN (1) CN1189291C (zh)
DE (2) DE10026021A1 (zh)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043416A1 (de) * 2000-09-04 2002-03-14 Hilti Ag Schlagendes Handwerkzeuggerät mit Werkzeugaufnahme
DE10142729A1 (de) 2001-08-31 2003-03-20 Hilti Ag Werkzeugaufnahme für schlagendes Handwerkzeuggerät
DE10207152B4 (de) * 2002-02-20 2015-04-16 Röhm Gmbh Bohrvorrichtung
US7527272B2 (en) 2002-09-18 2009-05-05 Robert Bosch Gmbh Chuck
DE10243290B4 (de) * 2002-09-18 2007-04-05 Robert Bosch Gmbh Werkzeugaufnahme
GB2394202A (en) * 2002-10-18 2004-04-21 Black & Decker Inc Tool holder for impacting machine
US7232008B2 (en) * 2003-10-08 2007-06-19 Pride Mobility Products Corporation Active anti-tip wheels for power wheelchair
DE102004042735A1 (de) * 2004-09-03 2006-03-09 Robert Bosch Gmbh Werkzeugaufnahme, Adapter und System mit einer Werkzeugaufnahme und einem Adapter
US7243923B2 (en) * 2005-02-09 2007-07-17 Black & Decker Inc. Centering drill chuck
EP2556928A1 (en) * 2005-06-15 2013-02-13 Caterpillar Inc. Tool retention apparatus and method
EP1733849A1 (en) * 2005-06-15 2006-12-20 Caterpillar, Inc. Tool assembly having a two part body
DE102005000097A1 (de) * 2005-07-28 2007-02-01 Hilti Ag Schlagwerkzeugaufnahme
DE102005000168A1 (de) * 2005-11-25 2007-05-31 Hilti Ag Werkzeugaufnahme
CN2858200Y (zh) * 2005-12-22 2007-01-17 特力实业有限公司 一种电动工具
CN103302337B (zh) 2006-03-02 2016-09-28 密尔沃基电动工具公司 切削刀具
US8328477B2 (en) 2006-03-02 2012-12-11 Milwaukee Electric Tool Corporation Cutting tool
US7810817B1 (en) 2006-11-20 2010-10-12 Bradshaw Medical, Inc. Holder for replaceable tools
US8608414B2 (en) 2009-06-01 2013-12-17 Robert Bosch Gmbh Bi-directional quick change tool-less lever and wedge actuated collet chuck, system and/or method for using the same
DE102009028890B4 (de) * 2009-08-26 2014-11-20 Hilti Aktiengesellschaft Werkzeugaufnahme
DE102009057200A1 (de) * 2009-11-26 2011-06-01 C. & E. Fein Gmbh Vorsatz für eine Werkzeugmaschine
US9662778B2 (en) 2012-02-10 2017-05-30 Milwaukee Electric Tool Corporation Bit retention assembly for rotary hammer
US9517510B2 (en) * 2012-06-05 2016-12-13 Robert Bosch Tool Corporation Quick change power tool chuck
CN205218137U (zh) 2013-02-01 2016-05-11 米沃奇电动工具公司 具有可替换钻头的螺旋钻头
DE102019123995A1 (de) * 2019-09-06 2021-03-11 Drebo Werkzeugfabrik Gmbh Saugbajonet
DE102021203063A1 (de) * 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
DE102021203064A1 (de) * 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
US20220361934A1 (en) * 2021-05-13 2022-11-17 DePuy Synthes Products, Inc. Surgical impacting tool interfaces

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788658A (en) * 1972-08-14 1974-01-29 Erickson Tool Co Instant change tool holder
DE3506008A1 (de) * 1985-02-21 1986-08-21 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter
US5398946A (en) * 1993-12-29 1995-03-21 Poly-Tech Industries Chuck having one-step lock and release
DE4401663A1 (de) * 1994-01-21 1995-07-27 Bosch Gmbh Robert Werkzeughalter
JP3423497B2 (ja) * 1995-09-06 2003-07-07 株式会社マキタ 携帯工具のビット装着装置
DE19827172B4 (de) * 1998-06-18 2006-11-09 Robert Bosch Gmbh Werkzeughalter, insbesondere für Bohr-oder Schlaghämmer
DE19834503A1 (de) * 1998-07-31 2000-02-03 Hilti Ag Werkzeughalter für Bohr- und Meisselgeräte

Also Published As

Publication number Publication date
DE10026021A1 (de) 2001-11-29
CN1325783A (zh) 2001-12-12
EP1157790A1 (de) 2001-11-28
JP4758565B2 (ja) 2011-08-31
US20020067008A1 (en) 2002-06-06
JP2002011677A (ja) 2002-01-15
DE50113422D1 (de) 2008-02-14
CN1189291C (zh) 2005-02-16
US6543789B2 (en) 2003-04-08

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